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Exhibit 10.46

CHANGE OF CONTROL AGREEMENT

        This Change of Control Agreement (the "Agreement") is made effective as
of March 28, 2005, between Wireless Facilities, Inc. ("WFI") and William E.
Clift ("Clift"), subject to WFI's Board of Directors' approval.

        A.    Clift is presently employed as WFI's President of its WNS-US
Division pursuant to an offer letter dated November 5, 2004 (the "Offer
Letter").

        B.    Clift and WFI desire to memorialize in writing their understanding
regarding vesting of stock options and stock appreciation rights granted to
Clift under WFI's equity incentive plans in the event of a Change of Control.

        Therefore, in consideration of the promises and the mutual covenants
contained below, and for other good and valuable consideration, receipt of which
is hereby acknowledged, the parties agree as follows:

        1.    Vesting Upon Change of Control.    Upon the closing of a
transaction the constitutes a Change of Control (as defined in paragraph 3(a)
below), the vesting of 50% of all stock options and stock appreciation rights
granted to Clift under WFI's equity incentive plans that as of the date of such
Change of Control remain unvested shall accelerate, to the extent permissible by
law, notwithstanding and in addition to any existing vesting provisions set
forth in such stock option, stock appreciation right and/or WFI equity incentive
plan. Upon a Triggering Event (as defined in paragraph 2(b) below), the
remaining unvested portion of any stock options and stock appreciation rights
shall immediately vest.

        2.    Definition of Change of Control and Triggering Event.    

        (a)   A Change of Control means: (i) the acquisition by an individual
person or entity or a group of individuals or entities acting in concert,
directly or indirectly, through one transaction or a series of transactions, of
more than 50% of the outstanding voting securities of WFI; (ii) a merger or
consolidation of WFI with or into another entity after which the stockholders of
WFI immediately prior to such transaction hold less than 50% of the voting
securities of the surviving entity; (iii) any action or event that results in
the Board of Directors consisting of fewer than a majority of Incumbent
Directors ("Incumbent Directors" shall mean directors who either (A) are
directors of WFI as of the date hereof, or (B) are elected or nominated for
election, to the Board with the affirmative votes of at least a majority of the
Incumbent Directors at the time of such election or nomination); or (iv) a sale
of all or substantially all of the assets of WFI.

        (b)   A Triggering Event means (i) Clift's termination from employment;
(ii) a material change in the nature of Clift's role or job responsibilities so
that Clift's job duties and responsibilities after the Change of Control, when
considered in their totality as a whole, are substantially different in nature
from the job duties Clift performed immediately prior to the Change of Control;
or (iii) the relocation of Clift's principal place of work to a location of more
that thirty (30) miles from the location Clift was assigned to immediately prior
to the Change of Control, subject to his current travel and relocation agreement
with WFI.

        (c)   "Cause" means (i) acts or omissions constituting gross negligence,
recklessness or willful misconduct on the part of Clift with respect to Clift's
obligations or otherwise relating to the business of WFI; (ii) Clift's material
breach of this Agreement or WFI's standard form of confidentially agreement;
(iii) Clift's conviction or entry of a plea of nolo contendere for fraud,
misappropriation or embezzlement, or any felony or crime of moral turpitude; or
(iv) Clift's willful neglect of duties or poor performance. Notwithstanding the
foregoing, a termination under subsection iv shall not constitute a termination
for "Cause" unless WFI has first given Clift written notice of the offending
conduct (such notice shall include a description of remedial actions that WFI
reasonably deems appropriate to cure such offending conduct) and a thirty
(30) opportunity to cure such offending conduct. In the event WFI terminates
Clift' employment under subsection iv, WFI agrees to participate in binding
arbitration, if

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requested by Clift, to determine whether the cause for termination was willful
neglect of duties or poor performance as opposed to some other reason that does
not constitute Cause under this Agreement.

        3.    General Provisions.    Except as set forth in this Agreement, the
terms of the Offer Letter remain unchanged. Nothing in this Agreement is
intended to change the at-will nature of Clift's employment with WFI. This
Agreement and the Offer Letter, including the Additional Terms and Conditions
attached thereto and the Proprietary Information and Innovations Agreement
signed by Clift, constitute the entire agreement between Clift and WFI with
respect to Clift's employment with WFI. No amendment or modification of the
terms or conditions of this Agreement shall be valid unless in writing and
signed by the parties.

        WILLIAM E. CLIFT
Dated:
 
    

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/s/  WILLIAM E. CLIFT      

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WIRELESS FACILITIES, INC.
Dated:
 
    

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By:
/s/  ERIC DEMARCO      

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Eric DeMarco, Chief Executive Officer

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Exhibit 10.46

CHANGE OF CONTROL AGREEMENT