Document:

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                                                                   EXHIBIT 10.13

                        iBEAM Broadcasting Corporation
                       2903 Bunker Hill Lane, Suite 201
                             Santa Clara, CA 95054

November 18, 1998

Chris L. Dier
2793 Gardendale Drive
San Jose, CA 95125

Dear Chris,

iBEAM Broadcasting Corporation (the "Company") is pleased to offer and confirm
your employment on the following terms and conditions:

Position. You will serve in a full-time capacity as Chief Financial Officer. You
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will initially report directly to Michael Bowles, CEO / President.

Compensation. You will be paid an annual salary of $180,000.00 payable in
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accordance with the Company's standard payroll practices for salaried employees.
You will also have the opportunity to earn up to an additional $20,000.00 bonus
annually based upon the successful attainment of mutually agreed upon
performance goals. Payable at target at the rate of $1,666.00 for calendar Q4
1998, then at the rate of $5,000.00 per every calendar quarter thereafter.
Salary will be subject to adjustment pursuant to the Company's employee
compensation policies in effect from time to time.

Stock Options. Subject to Board approval at the next scheduled meeting, you will
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receive an option to purchase 130,000 shares to be adjusted to equal 1.5% of the
fully diluted common shares, assuming preferred shares are converted to common
and including granted employee options and the ungranted pool for employee
options, after the next financing of not less than $6 million. Not more than $8
million will be included for purposes by calculating such adjustment of the
Company's Common Stock at an exercise price at the fair market value of the
Company's Common Stock at the time such options are approved by the Board. Such
option shall vest over four years with a fourth of the options vesting at the
end of the first 5 years and then monthly thereafter. Your option grants will
include a provision providing for accelerated vesting of 50% of your remaining
unvested option balance upon a change of control where you are not designated as
the Chief Financial Officer reporting to the Chief Executive Officer of the
combined company. In addition to ongoing salary payments, you will receive a
termination payment equal to six (6) months full compensation payable to you the
earlier of six (6) months after change of control or termination of your
employment by the acquiring company.

Health Benefits. The Company provides a competitive health plan to all its
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employees and their dependents with prior existing conditions covered as per the
requirements of California Law.

Proprietary Information and Inventions Agreement. As with all Company employees,
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you will be required, as a condition to your employment with the Company, to
sign the Company's standard Proprietary Information and Inventions Agreement,
attached as Exhibit A.

Period of Employment. Your employment with the Company will be "at will,"
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meaning that either you or the Company wilt be entitled to terminate your
employment at any time for any reason, with or
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without cause. Any contrary, representations which may have been made to you are
superseded by this offer.

Outside Activities. During the period that you render services to the Company,
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you will not engage in any employment, business or activity that is in any way
competitive with the business or proposed business of the Company, or any other
gainful employment, business or activity except that you may remain a member of
the Board of Director of Pavilion Technologies, Inc., through June 31, 1999
without the written consent of the Company. You also will not assist any other
person or organization in competing with the Company or in preparing to engage
in competition with the business or proposed business of the Company.

Vacation. In addition to the company's standard vacation policy, it is agreed
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that you may take five (5) days of unpaid vacation days previously scheduled by
you prior to December 31, 1998. Those days are December 3rd, 4th, 7th, 28th and
29th. The 28th and 29th shall be changed if necessary to conclude financing for
the company.

Entire Agreement. This letter and all of the exhibits attached hereto contain
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all of the terms of your employment with the Company and supersede any other
understandings or agreements, oral or written, between you and the Company.

We're very excited about the possibility of having you work at iBEAM. If you
accept the offer, please sign it and Exhibit A and return both documents to me
within 3 days from the receipt of this offer.

AGREED AND ACCEPTED                 Very Truly yours,

     11/18/98
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Date                                /s/ Michael Bowles

     11/19/98                       iBEAM Broadcasting Corporation
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Start Date                          Michael Bowles
                                    President & CEO

    /s/ Chris L. Dier
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Chris L. Dier<PAGE>

                                                                   EXHIBIT 10.14

                                 [iBEAM logo]

                                 July 9, 1999

Mr. Jeremy Zullo
iBEAM Broadcasting

          Re: Offer of Employment
              -------------------

Dear Jeremy:

          I am writing to confirm our offer of the following terms of your
employment commencing July 1, 1999 and continuing thereafter as provided herein:

          If you accept this offer, your title will be Executive Director
Development, reporting to Vice President Engineering. Your monthly base salary
will be $12,916.67 ($155,000 annually) less all applicable deductions. In
addition, you will be eligible to earn an annual bonus of up to $20,000 per
year, less all applicable deductions, based on your achievement of performance
goals set for you at the beginning of each quarter. I will set your goals within
the first 30 days of each quarter and communicate those goals to you in writing.
If you meet these goals, you will earn the aforementioned bonus.

          The Company will also award you an additional option to purchase
15,000 shares of Company common stock at the fair market value on the date of
grant. This option will become exercisable over the next four years with one-
quarter of the shares exercisable after one year and the remaining shares
becoming exercisable in equal installments over the next 36 months. This option
grant will be contingent upon you executing the Company's standard stock option
agreement, and will be subject to all terms of that agreement and the Company's
stock option plan. This grant is also contingent upon approval by the Company's
Board of Directors, which we expect to occur during the next meeting following
your acceptance of this offer.

          In exchange for this additional stock and compensation, you agree to
remain employed by the Company through June 30, 2000. Although the Company may
terminate your employment at any time for any reason, with or without cause,
during this time period by giving you written notice of such termination, you
agree that you will remain employed with the Company through that date. If your
employment with the Company continues beyond June 30, 2000, then you will resume
being an at-will employee, that is, either you or the Company can terminate your
employment at any time for any reason, with or without cause. You also agree
that the terms of the Proprietary Information and Inventions Agreement, executed
by you on June 4, 1998, will continue to be in effect except that paragraph 7
will be modified as set forth in this paragraph.
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          If you accept this offer, it will supersede your prior agreement with
the Company. This will be the entire agreement between you and the Company
regarding the terms of your employment and it can only be modified in a
subsequent writing by you and the Company President.

          Please indicate your acceptance of this offer by signing below.

                              Sincerely,

                              /s/ Peter Desnoes
                              -------------------------------------
                              Peter Desnoes
                              Company Chief Executive Officer

I accept this offer.

/s/ Jeremy Zullo
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Jeremy Zullo<PAGE>

                                                                   Exhibit 10.15

                                 [iBEAM logo]

                                 July 9, 1999

Mr. Nils Lahr
iBEAM Broadcasting

          Re:  Offer of Employment
               -------------------

Dear Nils:

          I am writing to confirm our offer of the following terms of your
employment commencing July 1, 1999 and continuing thereafter as provided herein:

          If you accept this offer, your title will be Chief Architect,
reporting to Vice President, Engineering. Your monthly base salary will be
$12,500.00, ($150,000 annually), less all applicable deductions. In addition,
you will be eligible to earn an annual bonus of up to $30,000 per year, less all
applicable deductions, based on your achievement of performance goals set for
you at the beginning of each quarter. I will set your goals within the first 30
days of each quarter and communicate those goals to you in writing. If you meet
these goals, you will earn the aforementioned bonus.

          The Company will also award you an additional option to purchase
20,000 shares of Company common stock at the fair market value on the date of
grant. This option will become exercisable over the next four years with one-
quarter of the shares exercisable after one year and the remaining shares
becoming exercisable in equal installments over the next 36 months. This option
grant will be contingent upon you executing the Company's standard stock option
agreement, and will be subject to all terms of that agreement and the Company's
stock option plan. This grant is also contingent upon approval by the Company's
Board of Directors, which we expect to occur during the next meeting following
your acceptance of this offer.

          In exchange for this additional stock and compensation, you agree to
remain employed by the Company through June 30, 2000. Although the Company may
terminate your employment at any time for any reason, with or without cause,
during this time period by giving you written notice of such termination, you
agree that you will remain employed with the Company through that date. If your
employment with the Company continues beyond June 30, 2000, then you will resume
being an at-will employee, that is, either you or the Company can terminate your
employment at any time for any reason, with or without cause. You also agree
that the terms of the Proprietary Information and Inventions Agreement, executed
by you on April 8, 1998, will continue to be in effect except that paragraph 7
will be modified as set forth in this paragraph.
<PAGE>

          If you accept this offer, it will supersede your prior agreement with
the Company. This will be the entire agreement between you and the Company
regarding the terms of your employment and it can only be modified in a
subsequent writing by you and the Company Chief Executive Officer.

          Please indicate your acceptance of this offer by signing below.

                                 Sincerely,

                                 /s/ Peter Desnoes
                                 -----------------
                                 Peter Desnoes
                                 Company Chief Executive Officer

I accept this offer.

/s/ Nils Lahr
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Nils Lahr

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