Federal Contract Awards — NAICS 561621
Explore federal contract awards in NAICS 561621 — identify vendors and track industry spending trends.
This week in federal awards
2,094 matching · sorted by dollars_obligated
ADVANCED TECHNOLOGY SYSTEMS COMPANY, INC. (OF VIRGINIA)
Department of Defense · NAICS 561621
$113.2M
Nov 26, 2025
Prior Year
SERCO INC
Department of Defense · NAICS 561621
$101.2M
Nov 21, 2025
Prior Year
GENERAL DYNAMICS MISSION SYSTEMS, INC.
Department of Defense · NAICS 561621
$92.1M
Jan 11, 2024
Older
KBR WYLE SERVICES, LLC
Department of Transportation · NAICS 561621
$61.8M
Aug 29, 2017
Older
KBR WYLE SERVICES, LLC
Department of Transportation · NAICS 561621
$59.9M
Dec 22, 2025
Prior Year
FIRST COAST SECURITY SOLUTIONS, INC.
Department of Homeland Security · NAICS 561621
$58.6M
Sep 30, 2025
Prior Year
XATOR LLC
Department of Defense · NAICS 561621
$47.3M
Jan 6, 2023
Older
CACI INTERNATIONAL INC
Department of Defense · NAICS 561621
$45.9M
Dec 4, 2025
Prior Year
XATOR LLC
Department of Defense · NAICS 561621
$42.8M
Nov 25, 2025
Prior Year
M. C. DEAN, INC.
Department of Defense · NAICS 561621
$41.7M
Feb 2, 2023
Older
JOHNSON CONTROLS BUILDING AUTOMATION SYSTEMS, LLC
Department of Defense · NAICS 561621
$39.6M
Feb 3, 2023
Older
M. C. DEAN, INC.
Department of Defense · NAICS 561621
$39.5M
Nov 26, 2025
Prior Year
SERCO INC
Department of Defense · NAICS 561621
$38.2M
Nov 21, 2025
Prior Year
PARAGON SYSTEMS INC
Department of Homeland Security · NAICS 561621
$37.4M
Jan 6, 2026
Prior Year
M. C. DEAN, INC.
Department of Defense · NAICS 561621
$37.4M
Dec 1, 2025
Prior Year
CACI INTERNATIONAL INC
Department of Defense · NAICS 561621
$36.7M
Apr 3, 2025
Older
PARAGON SYSTEMS INC
Department of Homeland Security · NAICS 561621
$36.4M
Feb 27, 2026
Prior Year
M. C. DEAN, INC.
Department of Justice · NAICS 561621
$36.2M
Feb 2, 2024
Older
JOHNSON CONTROLS BUILDING AUTOMATION SYSTEMS, LLC
Department of Defense · NAICS 561621
$35.4M
Nov 26, 2025
Prior Year
FIRST COAST SECURITY SOLUTIONS, INC.
Department of Homeland Security · NAICS 561621
$35.1M
Sep 19, 2022
Older
SRCTEC, LLC
Department of Defense · NAICS 561621
$27.3M
Oct 15, 2020
Older
CHENEGA INTEGRATED SECURITY SOLUTIONS, LLC
Securities and Exchange Commission · NAICS 561621
$25.9M
Sep 25, 2023
Older
INDYNE, INC.
Department of Defense · NAICS 561621
$20.1M
Oct 6, 2025
Prior Year
VISTA DEFENSE TECHNOLOGIES, LLC
Department of Defense · NAICS 561621
$18.9M
May 27, 2021
Older
FIRST COAST SECURITY SOLUTIONS, INC.
Department of Homeland Security · NAICS 561621
$18.8M
Aug 20, 2026
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