Document:

<PAGE>

                                                                   Exhibit 10.23

                                LICENSE AGREEMENT

         THIS LICENSE AGREEMENT (the "AGREEMENT") is entered into effect as of
August 4, 2000 (the "EFFECTIVE DATE"), by and between SB OPERATINGCO, INC., a
Delaware corporation ("SUREBEAM"), and THE TITAN CORPORATION a Delaware
corporation ("LICENSEE").

                                    RECITALS

         WHEREAS, SureBeam is the owner, licensee or holder of certain Patent
Rights (as defined in EXHIBIT A) and Other Intellectual Property (as defined in
EXHIBIT A);

         WHEREAS, Licensee and SureBeam Corporation ("HOLDCO") are parties to a
certain Contribution Agreement dated as of August 4, 2000 and HoldCo and
SureBeam are parties to a certain Contribution Agreement dated as of August 4,
2000 (collectively, the "CONTRIBUTION AGREEMENTS") whereby Licensee contributed
certain of its assets and liabilities (the "TITAN ASSETS") to HoldCo and
thereafter HoldCo contributed the Titan Assets to SureBeam;

         WHEREAS, the parties hereto intend that as a part of such
contributions, this Agreement shall become effective upon and simultaneously
with the Contribution Agreements; and

         WHEREAS, Licensee desires to retain a fully-paid exclusive license to
practice the inventions covered by the Patent Rights and any Improvements (as
defined in EXHIBIT A) and Other Intellectual Property for medical sterilization
applications in the Territory (as defined in EXHIBIT A).

         NOW THEREFORE, in consideration of the foregoing premises and the
covenants contained in this Agreement, the parties agree as follows:

                                   ARTICLE 1

                                 GRANT OF RIGHTS

         1.1      GRANT TO LICENSEE. Except as otherwise set forth in this
Article, SureBeam hereby grants to Licensee an exclusive, fully paid,
royalty-free, perpetual license in the Territory under the Patent Rights and
Improvements and Other Intellectual Property to develop, use, offer for sale,
sell and import any Licensed Products (as defined in EXHIBIT A) for medical
sterilization applications.

         1.2      LICENSOR CONSENT. Notwithstanding any rights granted or
retained under Section 1.1 above, Licensee shall be prohibited from sublicensing
any rights granted hereunder, whether through one or multiple tiers of
sublicense, and shall have no right to make or have made any Licensed Products
in the Territory, without the prior written consent of SureBeam.

                                       1.
<PAGE>

                                   ARTICLE 2

                                  IMPROVEMENTS

         2.1      NOTICE OF IMPROVEMENTS. The parties hereto acknowledge that
each of them intends over the course of this License to continue to develop and
improve upon the Patent Rights, for food or medical sterilization purposes as
the case may be, and that such continued development of and improvements to the
technology licensed hereunder is in their mutual best interests. As good and
valuable consideration for the continued mutual exchange of such Improvements,
the receipt of which is hereby acknowledged, each party agrees to promptly
provide the other with notice of any Improvement conceived, discovered or
developed by such party, such notice being of sufficient detail to allow the
other party to evaluate the scientific and economic aspects of the Improvement.

                                   ARTICLE 3

                        OWNERSHIP; INTELLECTUAL PROPERTY

         3.1      TITLE. SureBeam shall use its best efforts to preserve and
maintain full ownership and title to and in the Patent Rights and Improvements
and Other Intellectual Property. Licensee hereby irrevocably assigns to SureBeam
all of its right, title and interest in and to any Improvements and intellectual
property rights therein.

         3.2      FILING, PROSECUTION AND MAINTENANCE OF PATENT APPLICATIONS.
SureBeam shall be responsible for the preparation, filing, prosecution and
maintenance of the Patent Rights and any Other Intellectual Property. SureBeam
and Licensee shall consult and cooperate on the exercise of any such rights,
obligations and duties. Subject to the foregoing, the parties shall allocate the
rights, obligations and duties regarding the prosecution and maintenance of such
patents and patent applications and other proprietary rights among themselves as
follow:

                  (a)      Licensee shall have the right to reasonably approve
any outside counsel selected by SureBeam with respect to preparation, filing,
prosecution and maintenance of Patent Rights and Other Intellectual Property.
SureBeam and Licensee will keep each other and their respective counsel advised
of the status of such preparation, filing, prosecution and maintenance and shall
provide each other and such counsel with copies of all official communications,
amendments and responses with respect to the patent applications and patents
included in the Patent Rights and the Other Intellectual Property. All such
official communications received by either SureBeam or Licensee shall be
provided promptly to the other, and proposed responses and amendments shall be
provided by SureBeam to Licensee for Licensee's review sufficiently prior to
filing to allow for review and comment by Licensee; provided that Licensee's
responses will be provided in a timely fashion. SureBeam will use all reasonable
efforts to implement reasonable requests by Licensee with respect to the
foregoing.

                  (b)      Licensee shall pay for one-half of all Patent Costs
during the term of this Agreement. "PATENT COSTS" as used in this Agreement
shall mean out-of-pocket expenses incurred by SureBeam in connection with the
preparation, filing, prosecution and maintenance of patent applications and
patents included within the Patent Rights and any other proprietary rights

                                       2.
<PAGE>

included within the Other Intellectual Property, including the fees and expenses
of attorneys and patent agents retained by SureBeam and filing fees and
maintenance fees (including, but not limited to, license payments or fees).

                  (c)      Licensee will cooperate with SureBeam in the
preparation, filing and maintenance and prosecution of the patent applications
and patents included in the Patent Rights and any other proprietary rights
included within the Other Intellectual Property by disclosing such information
as may be useful, necessary, or appropriate, including, without limitation, by
promptly executing such documents as SureBeam may reasonably request to effect
such efforts.

                  (d)      If SureBeam decides, at any time, not to file or
maintain a patent application or patent within the Patent Rights or any other
proprietary right within the Other Intellectual Property, then Licensee shall
have the right, but not the obligation, to file and maintain such application or
patent at its own expense.

         3.3      PATENT AND OTHER INTELLECTUAL PROPERTY ENFORCEMENT. The
parties shall allocate the rights, obligations and duties regarding the
enforcement of patents and patent applications within the Patent Rights and
other proprietary rights within the Other Intellectual Property among themselves
as follow:

                  (a)      If either party becomes aware of the infringement of
any Patent Rights or Other Intellectual Property it shall promptly notify the
other in writing, but in all events within thirty days and provide all relevant
information known to such party.

                  (b)      SureBeam shall be responsible for defending and
enforcing the Patent Rights and Other Intellectual Property and shall pay all
expenses related thereto. However, Licensee shall receive notice of and shall
have the right, at its expense, to participate in the protection and defense of
the Patent Rights or Other Intellectual Property. All recoveries, damages and
awards resulting from such enforcement, after reimbursement of any outstanding
litigation expenses incurred by SureBeam and Licensee, shall belong fifty
percent to SureBeam and fifty percent to Licensee. Licensee agrees to cooperate
reasonably in any such litigation initiated by SureBeam, including participating
as a necessary party, supplying documentary evidence and making witnesses in
Licensee's employment available.

                                   ARTICLE 4

                                 INDEMNIFICATION

         4.1      INDEMNIFICATION BY LICENSEE. Licensee agrees to indemnify
SureBeam, its directors, officers, shareholders and employees and to hold such
parties harmless from any action, claim, or liability, including without
limitation liability for death, personal injury, and/or property damage, arising
out of (i) the manufacture, use, sale or other disposition of Licensed Products
by Licensee or its Affiliates or sublicensees, or (ii) the use of the Patent
Rights or Improvements or Other Intellectual Property by Licensee or its
Affiliates or sublicensees; provided, however, that such indemnification shall
not apply to any claims resulting from the willful misconduct, negligence or
fraud of SureBeam, its directors, officers, stockholders or employees.

                                       3.
<PAGE>

         4.2      INDEMNIFICATION BY SUREBEAM. SureBeam agrees to indemnify
Licensee, its directors, officers, shareholders and employees and to hold such
parties harmless from any action, claim, or liability, including without
limitation liability for death, personal injury, and/or property damage, arising
out of (i) the manufacture, use, sale or other disposition of Licensed Products
by SureBeam or its Affiliates or sublicensees, or (ii) the use of the Patent
Rights or Improvements or Other Intellectual Property by SureBeam or its
Affiliates or sublicensees; provided, however, that such indemnification shall
not apply to any claims resulting from the willful misconduct, negligence or
fraud of Licensee, its directors, officers, stockholders or employees.

         4.3      PROCEDURE. In the event of the assertion or commencement by
any person of any claim or legal proceeding with respect to which a party (the
"INDEMNIFYING PARTY") may become obligated to hold harmless, indemnify,
compensate or reimburse any person entitled to indemnification pursuant to
Section 3.1 or 3.2, as applicable (the "INDEMNIFIED PARTY"), the Indemnifying
Party shall defend such claim or legal proceeding, subject to the following:

                  (a)      all reasonable expenses relating to the defense of
such claim or legal proceeding shall be borne and paid exclusively by the
Indemnifying Party;

                  (b)      each Indemnified Party shall make available to the
Indemnifying Party any documents and materials in its possession or control that
may be necessary to the defense of such claim or legal proceeding; and

                  (c)      The Indemnifying Party shall have the right to
settle, adjust or compromise such claim or legal proceeding with the consent of
the Indemnified Party, which will not unreasonably be withheld. Consent may not
be withheld if the Indemnified Party receives, as part of the settlement or
compromise, an unconditional release relating to such claim or legal proceeding.

         4.4      DISCLAIMER; LIMITATION OF LIABILITY. NEITHER PARTY MAKES ANY
WARRANTY, EXPRESS OR IMPLIED, WITH RESPECT TO THE PATENT RIGHTS OR IMPROVEMENTS
OR OTHER INTELLECTUAL PROPERTY, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED
WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
NONINFRINGEMENT. IN NO EVENT WILL EITHER PARTY, ITS DIRECTORS, OFFICERS,
EMPLOYEES, AGENTS OR AFFILIATES BE LIABLE TO THE OTHER PARTY FOR ANY INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES, WHETHER BASED UPON A
CLAIM OR ACTION OF CONTRACT, WARRANTY, NEGLIGENCE, STRICT LIABILITY OR OTHER
TORT, OR OTHERWISE, ARISING OUT OF THIS AGREEMENT.

                                   ARTICLE 5

                                 CONFIDENTIALITY

         A party receiving or gaining access to Confidential Information, as
defined below, of the other party will: (a) maintain in confidence such
Confidential Information to the same extent the receiving party maintains its
own proprietary information; (b) not disclose such Confidential

                                       4.
<PAGE>

Information to any third party without prior written consent of the disclosing
party, other than to Affiliates, employees, agents, consultants, permitted
sublicensees and other representatives of the receiving solely to the extent
necessary to accomplish the purposes of this Agreement, so long as such persons
are under an obligation of confidentiality no less stringent than as set forth
herein; and (c) not use such Confidential Information for any purpose, except
(i) as expressly authorized by this Agreement, or (ii) as required by law, rule,
regulation or court order (provided that the disclosing party will use
commercially reasonable efforts to obtain confidential treatment of any such
information required to be disclosed). Each party will promptly notify the other
party upon discovery of any unauthorized use or disclosure of the other party's
Confidential Information.

                                   ARTICLE 6

                            MISCELLANEOUS PROVISIONS

         6.1      INDEPENDENT CONTRACTORS. In making and performing this
Agreement, SureBeam and Licensee act and shall act at all times as independent
contractors and nothing contained in this Agreement shall be construed or
implied to create an agency, partnership or employer and employee relationship
between SureBeam and Licensee. At no time shall one party make commitments or
incur any charges or expenses for or in the name of the other party except as
specifically provided herein.

         6.2      NO FIDUCIARY RELATIONSHIP. Nothing in this Agreement shall be
interpreted to impose upon SureBeam any fiduciary duty to or fiduciary
relationship with respect to Licensee or any of its directors, officers or
stockholders.

         6.3      FURTHER ASSURANCE. Each party hereto shall execute and cause
to be delivered to each other party hereto such instruments and other documents,
and shall take such other actions, as such other party may reasonably request
for the purpose of carrying out or evidencing any of the transactions
contemplated by this Agreement.

         6.4      EXPENSES. Except as otherwise provided herein, all costs and
expenses incurred in connection with the transactions contemplated by this
Agreement shall be paid by the party incurring such costs and expenses.

         6.5      ASSIGNMENT; BINDING EFFECT. Except as expressly provided
hereunder, neither this Agreement nor any rights or obligations hereunder may be
assigned by either party without the prior written consent of the other party
(which consent shall not be unreasonably withheld); PROVIDED, HOWEVER, that
either party may assign this Agreement and its rights and obligations hereunder
without the other party's consent (a) in connection with the transfer or sale of
all or substantially all of the business of such party to which this Agreement
relates to a third party, whether by merger, sale of stock, sale of assets or
otherwise, or (b) to any Affiliate. Notwithstanding the foregoing, any such
assignment to an Affiliate shall not relieve the assigning party of its
responsibilities for performance of its obligations under this Agreement. The
rights and obligations of the parties under this Agreement shall be binding upon
and inure to the benefit of the successors and permitted assigns of the parties.
Any assignment not in accordance with this Section 6.5 shall be void.

                                       5.
<PAGE>

         6.6      NOTICES. Any notice or other communication required or
permitted to be delivered to either party under this Agreement shall be in
writing and shall be deemed properly delivered, given and received when
delivered (by hand, by registered or certified mail (return receipt requested),
by courier or express delivery service or by facsimile or other electronic
transmission, with the original by mail) to the address or facsimile number set
forth on the signature pages by the name of such party (or to such other address
or facsimile number as such party shall have specified in a written notice given
to the other party hereto).

         6.7      AMENDMENT. No amendment, modification or supplement of any
provision of this Agreement will be valid or effective unless made in writing
and signed by a duly authorized officer of each party.

         6.8      WAIVER. No provision of this Agreement, unless such provision
otherwise provides, will be waived by any act, omission or knowledge of a party
or its agents or employees except by an instrument in writing expressly waiving
such provision and signed by a duly authorized officer of the waiving party.

         6.9      SEVERABILITY. Any term or provision of this Agreement which is
invalid or unenforceable in any jurisdiction shall, as to that jurisdiction, be
ineffective to the extent of such invalidity or unenforceability without
rendering invalid or unenforceable the remaining terms and provisions of this
Agreement or affecting the validity or enforceability of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.

         6.10     ENTIRE AGREEMENT. This Agreement and any documents delivered
by the parties in connection herewith constitute the entire agreement between
the parties with respect to the subject matter hereof and thereof and supersede
all prior agreements and understandings between the parties with respect
thereto. No addition to or modification of any provision of this Agreement shall
be binding upon either party hereto unless made in writing and signed by both
parties hereto.

         6.11     OTHER AGREEMENTS. Except as expressly set forth in this
Agreement, nothing in this Agreement shall limit any of the rights, remedies or
obligations of the parties under any other agreement between SureBeam and
Licensee.

         6.12     GOVERNING LAW. This Agreement shall be construed in accordance
with, and governed in all respects by, the internal laws of the State of
California (without giving effect to principles of conflicts of law).

         6.13     COUNTERPARTS. This Agreement may be executed by the parties
hereto in separate counterparts, each of which when so executed and delivered
shall be an original, but all such counterparts shall together constitute one
and the same instrument.

         6.14     CONSTRUCTION.

                  (a)      Headings of the Sections of this Agreement are for
the convenience of the parties only, and shall be given no substantive or
interpretive effect whatsoever.

                                       6.
<PAGE>

                  (b)      For purposes of this Agreement, whenever the context
requires: the singular number shall include the plural, and vice versa; the
masculine gender shall include the feminine and neuter genders; the feminine
gender shall include the masculine and neuter genders; and the neuter gender
shall include masculine and feminine genders.

                  (c)      The parties hereto agree that any rule of
construction to the effect that ambiguities are to be resolved against the
drafting party shall not be applied in the construction or interpretation of
this Agreement.

                  (d)      As used in this Agreement, the words "include" and
"including," and variations thereof, shall not be deemed to be terms of
limitation, but rather shall be deemed to be followed by the words "without
limitation."

                  (e)      Except as otherwise indicated, all references in this
Agreement to "Sections" are intended to refer to Sections of this Agreement.

                      [THIS SPACE INTENTIONALLY LEFT BLANK]

                                       7.
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have duly executed this
Agreement.

                                       SB OPERATINGCO, INC.
                                       a Delaware Corporation

                                       By: /s/ Kevin K. Claudio
                                          --------------------------------------
                                       Print Name: Kevin K. Claudio
                                                  ------------------------------
                                       Title:
                                             -----------------------------------

                                        3033 Science Park Road
                                        San Diego, California  92121-1199
                                        Attention:  Corporate Secretary

                                       THE TITAN CORPORATION
                                       a Delaware Corporation

                                       By: /s/ Nicholas J. Costanza
                                          --------------------------------------
                                       Print Name: Nicholas J. Costanza
                                                  ------------------------------
                                       Title:
                                             -----------------------------------

                                        3033 Science Park Road
                                        San Diego, California 92121-1199
                                        Attn: Corporate Secretary

                       [LICENSE AGREEMENT SIGNATURE PAGE]

<PAGE>

                                    EXHIBIT A

                                   DEFINITIONS

         1.       "Affiliate" means any entity that directly or indirectly Owns,
is Owned by or is under common Ownership, with a party to this Agreement, where
"Owns" or "Ownership" means direct or indirect possession of at least fifty
percent of the outstanding voting securities of a corporation or ]a comparable
equity interest in any other type of entity.

         2.       "Confidential Information" means any proprietary information
of a party, including information relating to the Patent Rights and Improvements
and Other Intellectual Property, and any information relating to any
discoveries, inventions, data, know-how, trade secrets, techniques, methods,
materials, data, patent and legal data or descriptions, research project, work
in process, future development, scientific, engineering, manufacturing,
marketing, business plan, financial or personnel matter relating to such party,
its present or future products, sales, suppliers, customers, employees,
investors or business, whether in oral, written, graphic or electronic form.
Notwithstanding the foregoing, Confidential Information will not include any
information that the receiving party can prove by competent written evidence:

                  (a)      is now, or hereafter becomes, through no act or
failure to act on the part of the receiving party, generally known or available;

                  (b)      is known to, and may be used without restriction by,
the receiving party at the time of receiving such information, as evidenced by
its records;

                  (c)      is hereafter furnished to the receiving party by a
third party, as a matter of right and without restriction on disclosure;

                  (d)      is independently developed by the receiving party
without the aid, application or use of proprietary information of the other
party then subject to the confidentiality or use restrictions of this Agreement

         3.       "Improvements" mean all inventions, data, know-how, methods,
materials or discoveries, whether patentable or not, conceived, discovered or
developed by employees or agents of SureBeam or Licensee, or their respective
Affiliates, either directly or indirectly through use of Patent Rights or Other
Intellectual Property.

         4.       "Patent Rights" means SureBeam's rights, either by ownership,
assignment or license with a right to sublicense, under the patents and patent
applications listed on Exhibit A-1 hereto and any patents and patent
applications claiming any Improvement. "Patent Rights" include, without
limitation, all rights under patents and patent applications, and any and all
patents issuing therefrom (including utility, model and design patents and
certificates of invention), together with any and all substitutions, extensions
(including supplemental protection certificates), registrations, confirmations,
reissues, divisionals, continuations, continuations-in-part, re-examinations,
renewals and foreign counterparts of the foregoing.

         5.       "Licensed Products" means any product made with, from, using,
practicing or incorporating all or any Patent Rights or Improvements or Other
Intellectual Property.

                                      A-1.
<PAGE>

         6.       "Other Intellectual Property" means SureBeam's rights, either
by ownership, assignment or license with a right to sublicense, under all
trademarks, trade dress, service marks, tradenames and brand names, trade
secrets, inventions, invention disclosures, mask-works and mask-work
registrations, know-how, discoveries, designs, copyrights, copyright
registrations and applications and works of authorship, in each case that are
not covered by the Patent Rights but are related to or used in electronic
pasteurization and food applications and also necessary or useful for medical
sterilization applications and that exist as of the Effective Date or relate to
any Improvement.

         7.       "Territory" means every country and territory worldwide.

                                      A-2.
<PAGE>

                                   EXHIBIT A-1

                             SUREBEAM PATENT RIGHTS

                              UNITED STATES PATENTS

<TABLE>
<CAPTION>

--------------------------------------------------------------------------------------------------------------------
                        TITLE OF PATENT                                PATENT NUMBER               ISSUE DATE
--------------------------------------------------------------------------------------------------------------------
<S>                                                                    <C>                         <C>
Tunable Narrowband Spectrometer with Acousto-Optical Tunable             5,438,406                   8/1/95
Filter
--------------------------------------------------------------------------------------------------------------------
Tunable Spectrometer with Acousto-Optical Tunable Filter                 5,444,528                   8/22/95
--------------------------------------------------------------------------------------------------------------------
Article Carrier For Conveyor System                                      5,590,602                   1/7/97
--------------------------------------------------------------------------------------------------------------------
Article Irradiation System in Which Article-                             5,994,706                  11/30/99
Transporting Conveyor is Closely Encompassed
By Shielding Material
--------------------------------------------------------------------------------------------------------------------
Irradiation System Utilizing Conveyor Transported                        5,396,074                   3/7/95
Article Carriers
--------------------------------------------------------------------------------------------------------------------
Access Assignment in a DAMA Communication System                         5,197,125                   3/23/93
--------------------------------------------------------------------------------------------------------------------
Acquisition Of Carrier Phase and Symbol Timing                           5,544,200                   8/6/96
Through Point Estimation Of Phase and Timing
Adjustments
--------------------------------------------------------------------------------------------------------------------
Communication Signal Detection and Acquisition                           5,282,227                   1/25/94
--------------------------------------------------------------------------------------------------------------------
Conversion of Analog SignalInto I and Q Digital                          5,067,140                  11/19/91
Signals With Enhanced Image Rejection
--------------------------------------------------------------------------------------------------------------------

</TABLE>

                        UNITED STATES PATENT APPLICATIONS

<TABLE>
<CAPTION>

---------------------------------------------------------------- ------------------------------ ----------------------
                  TITLE OF PATENT APPLICATON                     APPLICATION SERIAL NO.              FILING DATE
---------------------------------------------------------------- ------------------------------ ----------------------
<S>                                                              <C>                            <C>
Apparatus For, And Method Of Sterilizing Products, Primarily              60/154,397                   9/17/99
Food Products
---------------------------------------------------------------- ------------------------------ ----------------------
Apparatus For, And Methods Of, Sterilizing Products, Primarily            09/456,061                   12/7/99
Food Products
---------------------------------------------------------------- ------------------------------ ----------------------
Article Irradiation System Having Intermediate Wall Of                    09/102,942                   6/23/98
Radiation Shielding Material Within Loop Of Conveyor System
That Transports The Articles
---------------------------------------------------------------- ------------------------------ ----------------------

</TABLE>

                                     A-1-1
<PAGE>

                              INVENTION DISCLOSURE

<TABLE>
<CAPTION>

---------------------------------------------------------------- -----------------------------------------------------
                 TITLE OF INVENTION DISCLOSURE                                        INVENTORS
---------------------------------------------------------------- -----------------------------------------------------
<S>                                                              <C>
System For, And Method Of, Irradiating Article With X-Ray Beam             John Thomas Allen; Gary K. Loda;
                                                                        George M. Sullivan; Colin B. Williams
---------------------------------------------------------------- -----------------------------------------------------

</TABLE>

                                     A-1-2<PAGE>

                             EMPLOYMENT AGREEMENT

     THIS EMPLOYMENT AGREEMENT (this "AGREEMENT") is entered into as of the
6th day of October, 2000, between Carreker Corporation, a Delaware
corporation (the "COMPANY"), and Michael D. Hansen ("MR. HANSEN").

                                   RECITALS

     Mr. Hansen agreed to accept employment with the Company pursuant to a
letter agreement between Mr. Hansen and the Company dated September 21, 2000.

     This Agreement sets forth in definitive form the terms of Mr. Hansen's
employment by the Company.  As such, this Agreement supersedes the letter
agreement in its entirety.

     NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements of the parties contained herein, the Company and Mr. Hansen hereby
agree as follows:

     1.     EMPLOYMENT.  The Company will employ Mr. Hansen and Mr. Hansen
accepts employment with the Company for a period of three (3) years beginning
October 6, 2000 (the "INITIAL PERIOD"). This Agreement shall automatically
renew for successive one (1) year terms ("Renewal Periods") unless either
party notifies the other six (6) months in advance of the expiration of the
Initial or any Renewal Period. Mr. Hansen's employment may continue after the
Initial or any Renewal Period but he will then be deemed an employee at will
under Texas law. The obligations of the Company and Mr. Hansen set forth in
that certain "Noncompetition, Property Rights and Trade Secrets Agreement"
and in that certain "Confidentiality Agreement" (each as defined in Section
8) (referring to noncompetition, intellectual property rights and
confidentiality, respectively) and in Section 9 (referring to termination)
will survive termination of Mr. Hansen's employment, regardless of reason, as
provided in such agreements.

     2.     BUSINESS TRAVEL.  Mr. Hansen acknowledges and agrees that the
primary location of his employment will be in Dallas, Texas or its environs,
that he will spend substantial time in Dallas, Texas and other locations
where the Company transacts (or proposes to transact) business and undertake
such other business travel as is reasonably required in the discharge of his
duties set forth below and for the successful operation of the Company.

     3.     DUTIES.  Mr. Hansen will be employed initially as Executive Vice
President and Managing Director, reporting directly to J.D. Carreker, Jr.,
Chairman and Chief Executive Officer. Mr. Hansen shall be responsible for
formulating and implementing e-commerce strategy; conducting the role of an
Executive Relationship Manager for a selected set of accounts/relationships;
representing the Company in identified community efforts/activities;
participating in the leadership and direction of the Company; and
participating as a member of the Policy Committee and Administration.
Mr. Hansen shall have such authority as Mr. Carreker or the Policy Committee
reasonably determine is necessary to perform his duties.

EMPLOYMENT AGREEMENT - Page 1

<PAGE>

     Mr. Hansen agrees that, to the best of his ability and experience, he
will at all times conscientiously perform such duties and obligations as may
be assigned to him, consistent with his position, by the Company's Chief
Executive Officer or the Company's Policy Committee.

     4.     FULL-TIME EMPLOYMENT.  Mr. Hansen's employment will be on a
full-time basis, in accordance with standard employee policies of the
Company, including the rules of any employee handbook and all other rules and
policies the Company might announce from time to time. In addition to such
restrictions as are set forth in the Noncompetition, Property Rights and
Trade Secrets Agreement referenced herein, Mr. Hansen will not engage in any
other business or render any commercial or professional services, directly or
indirectly, to any other person or organization, whether for compensation or
otherwise, provided that Mr. Hansen may (a) provide incidental assistance to
family members on matters of family business; or (b) engage in charitable
activities on behalf of civic, educational or other nonprofit organizations;
(c) serve with or without compensation on advisory boards of directors; and
(d) serve with or without compensation on non-competitor boards of directors;
provided in each case that such activities do not conflict with or interfere
with Mr. Hansen's normal full-time and first priority obligations to the
Company, and provided further that with respect to service on boards of
directors of any type, Mr. Hansen shall obtain prior written consent of the
Chairman of the Company, which consent shall not be unreasonably withheld or
delayed. Mr. Hansen may make personal investments in non-publicly traded
corporations, partnerships or other entities that, to the knowledge of the
Company, are not at the time of such investment engaged in any business
activities competitive with the Company. Notwithstanding anything to the
contrary contained in this Agreement, Mr. Hansen may make personal
investments in publicly traded corporations regardless of the business they
are engaged in, provided that Mr. Hansen does not at any time own in excess
of two percent (2%) of the issued and outstanding stock of any such
corporation.

     5.     SALARY; POTENTIAL INCENTIVE COMPENSATION; STOCK OPTIONS.

            (a)     SALARY AND POTENTIAL INCENTIVE COMPENSATION.  Mr.
Hansen's annual base salary for the Initial or any Renewal Period will be
$340,000 unless and until increased as set forth below. All base salary will
be payable on the Company's regular payroll dates, less required
withholdings. At least annually, Mr. Hansen's annual base salary shall be
reviewed by the Chairman and Chief Executive Officer and may, in his sole
discretion, be increased from time to time during the Initial or any Renewal
Period in light of merit, cost of living changes, and base compensation
levels for similar executive positions in the Company's industry.

            (b)     COMPANY BONUS PLAN.  The Company bonus plan operates on a
February 1 through January 31 time frame and will provide Mr. Hansen the
opportunity to earn a bonus when the Company meets certain profitability
goals. The bonus for Mr. Hansen for the period from October 6, 2000 through
January 31, 2001 shall equal 70% of base salary prorated for a 4 month period
representing that portion of the 2000 fiscal year during which he was
employed, provided Mr. Hansen was actually employed during such period. Such
bonus shall be paid concurrently with the Company's payment of bonuses to
other Company executives but no

EMPLOYMENT AGREEMENT - Page 2

<PAGE>

later than June 15, 2001. The target bonus for Mr. Hansen's position for
subsequent periods is set at 70% of base salary. The Chairman and Chief
Executive Officer will determine the actual amount received. It is possible
to receive more than the target percentage based on the Company exceeding the
Incentive Plan and at the discretion of the Chairman and Chief Executive
Officer. Mr. Hansen acknowledges that the Company's Board of Directors has
complete and sole discretion (exercisable in good faith) to establish and
revise any and all of the Company's bonus plans and payout levels; provided,
however, that no such action may retroactively alter or limit the amount of
any incentive compensation actually and previously earned by Mr. Hansen.

            (c)     STOCK OPTIONS.  A recommendation will be presented to the
Compensation Committee of the Board of Directors for Mr. Hansen to receive a
non-qualified stock option of 110,000 shares of common stock. The recommended
vesting will be a three (3) year schedule, 33.3% vesting for each year of
continuous service and employment. The per share option price will be
determined as market value (closing price) on the day of grant. Every effort
will be made to coincide the date of grant with Mr. Hansen's first day of
work. If Mr. Hansen should receive stock options on a vesting schedule, all
unvested options shall vest immediately upon the occurrence of any of the
following: a Change of Control (as defined below), the termination by the
Company of Mr. Hansen's employment without cause, Mr. Hansen's resignation
pursuant to Section 9(b) of this Agreement, Mr. Hansen's permanent
disability, or Mr. Hansen's death. Each such option shall be issued under and
pursuant to the Company's Amended and Restated 1994 Long-Term Incentive Plan,
with terms and conditions as provided therein except as expressly provided
herein. Mr. Hansen will also be eligible to receive such other options that
the Company's Board of Directors shall, in its sole discretion, hereafter
determine to grant to him.

            For purposes of this Agreement, a Change of Control shall have
occurred if, as the result of a completed tender offer, merger,
consolidation, sale of assets, acquisition of shares or contested election,
or any combination of the foregoing transactions, (a) any person (other than
J.D. Carreker, his heirs, Crow Family Partnership, L.P., or affiliates of any
of them) shall become the owner, beneficially or of record, of more than
fifty percent (50%) of the aggregate voting power of the Company, or (b)
during any period of two (2) consecutive years, individuals who at the
beginning of such period constituted the Board of Directors of the Company
(together with any new directors whose election to such board or whose
nomination for election by the shareholders of the Company was approved by
the directors then still in office who were either directors at the beginning
of such period or whose election or nomination for election was previously so
approved) cease to constitute a majority of the Board of Directors of the
Company, or (c) a merger or consolidation of the Company with any other
corporation, other than a merger or consolidation which would result in the
voting securities of the Company outstanding immediately prior thereto
continuing to represent (either by remaining outstanding or by being
converted into voting securities of the surviving entity) more than fifty
percent (50%) of the combined voting power of the voting securities of the
Company or such surviving entity outstanding immediately after such merger or
consolidation; PROVIDED, HOWEVER, that a merger or consolidation in which the
Company is the surviving entity (other than as a wholly owned

EMPLOYMENT AGREEMENT - Page 3

<PAGE>

subsidiary of another entity) and in which the Board of the Company after
giving effect to the merger or consolidation is comprised of a majority of
members who are either (i) directors of the Company immediately preceding the
merger or consolidation, or (ii) appointed to the Board of the Company by the
Company (or its Board) as an integral part of such merger or consolidation,
shall not constitute a Change in Control of the Company; or (d) the
stockholders of the Company approve a plan of complete liquidation of the
Company or the sale or disposition by the Company of all or substantially all
of the Company's assets other than (x) the sale or disposition of all or
substantially all of the assets of the Company to a person or persons who
beneficially own, directly or indirectly, at least fifty percent (50%) or
more of the combined voting power of the outstanding voting securities of the
Company at the time of the sale or (y) pursuant to a dividend in kind or
spin-off type transaction, directly or indirectly, of such assets to the
stockholders of the Company.

     6.     BENEFITS.  Mr. Hansen will also be entitled to insurance,
vacation and other employee benefits commensurate with his position (and
reasonably consistent with the benefits afforded other executive officers of
the Company) in accordance with the Company's standard employee policies in
effect from time to time.  Mr. Hansen acknowledges receipt of a summary of
the Company's standard employee benefits policies in effect as of the date of
this Agreement.

     7.     REIMBURSEMENT OF SPECIAL EXPENSES AND NORMAL BUSINESS EXPENSES.
The Company agrees to reimburse Mr. Hansen's out-of-pocket expenses for
initiation fees, special assessments and  monthly dues to a mutually agreed
upon country club for entertainment and networking.

     The Company will, but in accordance with the Company's policies in
effect from time to time, reimburse Mr. Hansen for all other out-of-pocket
reasonable business expenses incurred by Mr. Hansen in connection with the
performance of his duties under this Agreement, upon submission of the
required documentation required pursuant to the Company's standard policies
and record-keeping procedures.

     8.     INTELLECTUAL PROPERTY.  Simultaneously with the execution of this
Agreement and as a condition of his employment, Mr. Hansen agrees to execute
and deliver (if he has not done so already) that certain Noncompetition,
Property Rights and Trade Secrets Agreement between him and the Company, a
copy of which is attached to this Agreement as Attachment A, and that certain
Confidentiality Agreement between him and the Company, a copy of which is
attached to this Agreement as Attachment B.

     9.     TERMINATION.

            (a)     THE COMPANY.  Notwithstanding Section 1, the Company may
terminate Mr. Hansen's employment at any time during the Initial or any
Renewal Period with or without Cause (as defined below), provided that the
Company shall provide Mr. Hansen thirty (30) days written notice for
termination without Cause.  The Company shall not be required to provide
notice for a termination with Cause.

EMPLOYMENT AGREEMENT - Page 4

<PAGE>

            (b)     BY MR. HANSEN.  During the Initial or any Renewal Period,
Mr. Hansen may terminate his employment upon thirty (30) days written notice
to the Company if he has "Good Reason" (as defined herein) or if the Company
is in material breach of this Agreement; provided, however, that such
material breach shall permit such termination only if the Company shall have
been provided at least 30 days' prior notice and opportunity to cure such
material breach. A failure by the Company to pay to Mr. Hansen any
undisputed amounts due under this Agreement in accordance with the terms
hereof shall be deemed a material breach. Any such termination for Good
Reason or material breach shall be deemed a termination by the Company of Mr.
Hansen's employment under Section 9(b) without cause, for which Mr. Hansen
shall have the remedy set forth in Section 9(c). As used herein, "Good
Reason" means the occurrence, without Mr. Hansen's prior consent, of any of
the following: (i) the assignment to Mr. Hansen of any duties inconsistent in
any material respect with an EVP or higher position; or (ii) the Company's or
any subsidiary's requiring Mr. Hansen to perform services at any location
outside the Dallas, Texas metropolitan area, other than reasonable business
travel contemplated by Section 2 hereof.

            (c)     REMEDY.  Upon termination of Mr. Hansen's employment
during the Initial or any Renewal Period without Cause pursuant to Section
9(a) or pursuant to Section 9(b) only (at which time he shall cease to be an
employee of the Company for all purposes), the Company will (i) pay to
Mr. Hansen on the Company's regular payroll dates and less required
withholdings, the base salary at the rate paid to Mr. Hansen immediately
prior to such termination, for the remainder of the Initial Period or for 12
months, whichever is longer; (ii) pay to Mr. Hansen annual bonuses for the
remainder of the Initial Period or 12 months, whichever is longer, at such
time as the Company pays bonuses, equal to the bonus to which he would have
been entitled under Section 5(b) had (x) he not been terminated and (y) the
Company's profitability through the fiscal quarter ended immediately prior to
the effective date of termination continued at the same rate throughout the
applicable bonus period; and (iii) provide Mr. Hansen with the opportunity to
purchase major medical health and dental insurance reasonably comparable to
employee benefits then provided to the Company's senior officers in
accordance with the Consolidated Omnibus Benefit Reconciliation Act of 1985
("COBRA"). Further, to the extent Mr. Hansen would otherwise be entitled to
a bonus under Section 5(b), the Company will pay Mr. Hansen a prorated bonus,
for that portion of the relevant fiscal year during which he worked, at such
time as the Company pays bonuses, or portions thereof, to other senior
executives of the Company. The Company's obligation to reimburse Mr. Hansen's
monthly country club dues and related fees and business expenses (to the
extent incurred following the effective date of his termination) as provided
in Section 7 shall not survive termination.

     If the Company terminates Mr. Hansen's employment with Cause, none of
the foregoing post-termination payments or benefits, or any other
post-termination or severance payments or benefits, shall be made or provided
to Mr. Hansen.

EMPLOYMENT AGREEMENT - Page 5

<PAGE>

     For purposes of this Agreement, the term "Cause" shall mean conduct
involving one or more of the following as determined by the Company in its
reasonable discretion: (i) the substantial, material and continuing failure
of Mr. Hansen, after reasonable notice thereof, to render services to the
Company or any subsidiary in accordance with the terms or requirements of
this Agreement other than as a result of disability; (ii) disloyalty, gross
negligence, willful misconduct, dishonesty or breach of fiduciary duty to the
Company or any subsidiary; (iiiiv) the commission of an act of embezzlement
or fraud; (iv) deliberate disregard of the rules or policies of the Company
that results in direct or indirect material loss, damage or injury to the
Company or any subsidiary; (vi) breach of the Company's policies concerning
harassment, discrimination, and offensive or disruptive behavior; (vii) the
unauthorized and intentional disclosure of any trade secret or confidential
information of the Company or any subsidiary; (viii) the commission of an act
that constitutes unfair competition with the Company or any subsidiary or
which induces any customer or supplier to terminate a contract with the
Company or any subsidiary, or that otherwise results in direct or indirect
material loss, damage or injury to the Company or any subsidiary; (viiix)
habitual drunkenness or an addiction to drugs; or (viiix) commission of a
crime of moral turpitude.

     The Company's obligation to make payments (and provide COBRA benefits),
if any, pursuant to this Section 9(c) is in lieu of any damages and any other
payment or other benefits that the Company might otherwise be obligated to
pay Mr. Hansen as a result of the termination of Mr. Hansen's employment with
the Company (including for claims of employment discrimination, wrongful
termination or breach of this Section 9). The Company and Mr. Hansen agree
that, in view of the nature of the issues likely to arise in the event of
such termination, it would be impracticable or extremely difficult to fix the
actual damages resulting from such termination and proving actual damages,
causation and foreseeability in the case of such termination would be costly,
inconvenient and difficult. In requiring the Company to make the payments
(and provide the COBRA benefits) as set forth herein, it is the intent of the
parties to provide, as of the date of this Agreement, for a liquidated amount
of damages to be paid by the Company to Mr. Hansen. Such liquidated amount
shall be deemed full and adequate damages for such termination and is not
intended by either party to be a penalty.

            (d)     UPON DEATH.  Except as otherwise provided for in this
Agreement, if Mr. Hansen dies during the term of this Agreement, then the
Company will pay his estate an amount equal to all earned and unpaid salary,
prorated bonuses (if any) for that portion of the year of his death during
which he worked, other bonuses (if any) accrued and payable, and accrued
benefits, all as of the date of his death.

            (e) SURVIVAL.  Mr. Hansen's and the Company's obligations under
Sections 8, 9 and 10(h) of this Agreement and, to the extent that any
allowable expenses have not been reimbursed as of the effective date of such
termination, under Section 7 of this Agreement, will survive the termination
of Mr. Hansen's employment with the Company.

     10.     MISCELLANEOUS.

EMPLOYMENT AGREEMENT - Page 6

<PAGE>

     (a)     NOTICES.  Any and all notices permitted or required to be given
under this Agreement must be in writing. Notices will be deemed given (i)
when personally received or when sent by facsimile transmission (to the
receiving party's facsimile number), (ii) on the first business day after
having been sent by commercial overnight courier with written verification of
receipt, or (iii) on the third business day after having been sent by
registered or certified mail from a location on the United States mainland,
return receipt requested, postage prepaid, whichever occurs first, at the
address set forth below or at any new address, notice of which will have been
given in accordance with this Section 10(a):

          (i)     If to the Company:     Carreker Corporation
                                         4055 Valley View Lane, Suite 1000
                                         Dallas, Texas 75244
                                         Attention:  Chief Executive Officer
                                         Phone: (972) 458-1981
                                         Fax: (972) 661-5158

          (ii)     If to Mr. Hansen:     Mr. Michael D. Hansen
                                         4430 Belclaire Avenue
                                         Dallas, Texas  75205
                                         Phone:  (214) 213-7466

     (b)     AMENDMENTS.  This Agreement, including the Attachments hereto,
contains the entire agreement and supersedes and replaces all prior
agreements between the Company and Mr. Hansen concerning Mr. Hansen's
employment and employment benefits (including, without limitation, the letter
agreement referenced in the recitals to this Agreement). This Agreement may
not be changed or modified in whole or in part except by a writing signed by
the party against whom enforcement of the change or modifications is sought.

     (c)     SUCCESSORS AND ASSIGNS.  This Agreement will not be assignable
by either Mr. Hansen or the Company, except that the rights and obligations
of the Company under this Agreement may be assigned to a corporation which
succeeds the Company as the result of a merger or other corporate
reorganization and which continues the business of the Company, or a
subsidiary of the Company, provided that the Company guarantees the
performance by such assignee of the Company's obligations hereunder.

     (d)     GOVERNING LAW.  The laws of the State of Texas (without regard
to its choice of law principles that might apply the law of another
jurisdiction) will govern the validity of this Agreement, the construction of
its terms, the interpretation and enforcement of the rights and duties of the
parties, and any other issues that might arise with respect to hereto.

     (e)     NO WAIVER.  The failure of any party to enforce any of the
provisions of this Agreement will not be construed to be a waiver of the
right of such party thereafter to enforce such provisions.  The waiver by any
party of the right to enforce any of the provisions of this

EMPLOYMENT AGREEMENT - Page 7

<PAGE>

Agreement on any occasion will not be construed to be a waiver of the right
of such party to enforce such provisions on any other occasion.

     (f)     SEVERABILITY.  Mr. Hansen and the Company recognize that the
limitations contained in this Agreement are reasonably and properly required
for the adequate protection of the interests of the Company. If for any
reason a court of competent jurisdiction or an arbitrator in a binding
arbitration proceeding finds any provision of this Agreement, or the
application thereof, to be unenforceable, then the remaining provisions of
this Agreement will be interpreted so as best to reasonably effect the intent
of the parties. The parties further agree that the court or arbitrator shall
replace any such invalid or unenforceable provisions with valid and
enforceable provisions designed to achieve, to the extent possible, the
business purposes and intent of such unenforceable provisions.

     (g)     COUNTERPARTS.  This Agreement may be executed in counterparts,
each of which will be an original as regards any party whose signature
appears thereon and all of which together will constitute one and the same
instrument.  This Agreement will become binding when one or more counterparts
hereof, individually or taken together, bear the signatures of both parties
reflected hereon as signatories.

     (h)     DISPUTE RESOLUTION.

             (i)     ARBITRATION OF DISPUTES.  Any dispute under this
Agreement shall be resolved by arbitration in Dallas, Texas and, except as
herein specifically stated, in accordance with the commercial arbitration
rules of the American Arbitration Association ("AAA Rules") then in effect,
except that depositions and documentary discovery shall be freely permitted.
However, in all events, these arbitration provisions shall govern over any
conflicting rules that may now or hereafter be contained in the AAA Rules.
Any judgment upon the award rendered by the arbitrator may be entered in any
court having jurisdiction over the subject matter thereof. The arbitrator
shall have the authority to grant any equitable and legal remedies that would
be available in any judicial proceeding instituted to resolve such dispute,
and may, in his or her discretion, award attorneys' fees, expenses and costs.

             (ii)    COMPENSATION OF ARBITRATOR.  Any such arbitration will
be conducted before a single arbitrator who will be compensated for his or
her services at a rate to be determined by the parties or by the American
Arbitration Association, but based upon reasonable hourly or daily consulting
rates for the arbitrator if the parties are not able to agree upon his or her
rate of compensation.

             (iii)   SELECTION OF ARBITRATOR.  The American Arbitration
Association will have the authority to select an arbitrator from a list of
arbitrators who are lawyers familiar with Texas contract law; provided,
however, that such lawyers cannot work for a firm then performing services
for either party, that each party will have the opportunity to make such
reasonable objection to any of the arbitrators listed as such party may wish
and that the American Arbitration Association will select the arbitrator from
the list of arbitrators as to whom neither

EMPLOYMENT AGREEMENT - Page 8

<PAGE>

party makes any such objection. If the foregoing procedure is not followed,
then each party will choose one person from the list of arbitrators provided
by the American Arbitration Association (provided that such person does not
have a conflict of interest), and the two persons so selected will select
from the list provided by the American Arbitration Association the person who
will act as the arbitrator.

             (iv)    PAYMENT OF COSTS.  The Company and Mr. Hansen will each
pay 50% of the initial compensation to be paid to the arbitrator in any such
arbitration and 50% of the costs of transcripts and other normal and regular
expenses of the arbitration proceedings.

             (v)     BURDEN OF PROOF.  For any dispute submitted to
arbitration, the burden of proof will be as it would be if the claim were
litigated in a Texas judicial proceeding.

             (vi)    AWARD.  Upon the conclusion of any arbitration
proceedings hereunder, the arbitrator will render findings of fact and
conclusions of law and a written opinion setting forth the basis and reasons
for any decision reached and will deliver such documents to each party to
this Agreement along with a signed copy of the award.

             (vii)   TERMS OF ARBITRATION.  The arbitrator chosen in
accordance with these provisions will not have the power to alter, amend or
otherwise affect the terms of these arbitration provisions or the provisions
of this Agreement.

             (viii)  NATURE OF REMEDY.  Except as specifically otherwise
provided below, arbitration will be the sole and exclusive remedy of the
parties for any dispute arising out of this Agreement.

             (ix)    EQUITABLE REMEDY.  Notwithstanding the provisions of
this Section 10(h) and the arbitration provided for herein, actions initiated
or maintained by the parties for injunctive or similar equitable relief are
not subject to arbitration, and may be brought by the parties in any court
that has jurisdiction, and, should the party bringing any such action
prevail, all costs and expenses (including legal fees) shall be borne by the
party against whom such action was brought.

     (i)     CONSTRUCTION.  This Agreement is a result of arms length
negotiation between the parties during which each has been represented by
counsel of its choice.  Its terms shall not be construed for or against
either party.

EMPLOYMENT AGREEMENT - Page 9

<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Employment Agreement
to be effective as of the date first set forth above.

CARREKER CORPORATION                    EMPLOYEE

By:  /s/ John D. Carreker, Jr.          /s/ Michael D. Hansen
     -------------------------          ---------------------
     John D. Carreker, Jr.              Michael D. Hansen
     Chairman of the Board and
     Chief Executive Officer

EMPLOYMENT AGREEMENT - Page 10

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