Top 100 Contractors in NAICS 54133: Engineering Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 54133: Engineering Services, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 41% of NAICS 54133 contract dollars from July 2025 through June 2026

Contract obligations: $54,740,728,350 Net of deobligations, by contracts coded NAICS 54133 or a code under it
Contractors: 2,848 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $8.82 billion, 15.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	General Dynamics Corporation 18 awardees, including Electric Boat Corporation, General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$8,820,290,934	15.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	RTX Corporation 73 awardees, including Raytheon Company, Rockwell Collins, Inc. and Raytheon Southeast Asia Systems Company Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,309,361,213	4.0%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$1,930,880,140	3.3%	Rank history: #5 in FY2021, #4 in FY2022, #2 in FY2023, #3 in FY2024 and #4 in FY2025; down 1 since Jul 2024–Jun 2025.
4	Lockheed Martin Corporation 32 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,913,893,834	3.3%	Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
5	Northrop Grumman Corporation 38 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,873,862,500	3.3%	Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023, #5 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Science Applications International Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,583,934,430	2.7%	Rank history: #7 in FY2021, #7 in FY2022, #8 in FY2023, #7 in FY2024 and #8 in FY2025; up 1 since Jul 2024–Jun 2025.
7	Tcom, L.P. Top agencies Army (Department of the Army)	$1,446,028,326	2.5%	Rank history: #44 in FY2021, #43 in FY2022, #47 in FY2023, #40 in FY2024 and #7 in FY2025; up 34 since Jul 2024–Jun 2025.
8	BAE Systems 14 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,327,952,374	2.3%	Rank history: #10 in FY2021, #9 in FY2022, #6 in FY2023, #6 in FY2024 and #6 in FY2025; down 2 since Jul 2024–Jun 2025.
9	Amentum Holdings, Inc. 13 awardees, including Amentum Services, Inc., JT4 LLC and Amentum Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,121,268,250	1.9%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #9 in FY2025; unchanged since Jul 2024–Jun 2025.
10	CACI International Inc. 4 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,112,799,643	1.9%	Rank history: #8 in FY2021, #11 in FY2022, #9 in FY2023, #9 in FY2024 and #10 in FY2025; down 2 since Jul 2024–Jun 2025.
11	The Boeing Company 18 awardees, including Insitu, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,060,384,613	1.8%	Rank history: #13 in FY2021, #8 in FY2022, #11 in FY2023, #8 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Leidos Holdings, Inc. 14 awardees, including Leidos, Inc., Dynetics, Inc. and Stantec GS - WSP JV Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$855,272,273	1.5%	Rank history: #9 in FY2021, #12 in FY2022, #12 in FY2023, #11 in FY2024 and #12 in FY2025; unchanged since Jul 2024–Jun 2025.
13	Huntington Ingalls Industries, Inc. 8 awardees, including HII Mission Technologies Corp, HII Technical Solutions Corporation and Huntington Ingalls Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$729,854,640	1.3%	Rank history: #20 in FY2021, #16 in FY2022, #14 in FY2023, #10 in FY2024 and #14 in FY2025; down 2 since Jul 2024–Jun 2025.
14	L3Harris Technologies, Inc. 21 awardees, including L3Harris Interstate Electronics Corporation, L3 Technologies, Inc. and L3Harris Technologies Integrated Systems L.P. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$678,381,519	1.2%	Rank history: #6 in FY2021, #6 in FY2022, #7 in FY2023, #13 in FY2024 and #13 in FY2025; up 5 since Jul 2024–Jun 2025.
15	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy) DMEA (Defense Microelectronics Activity) NASA (National Aeronautics and Space Administration)	$637,827,741	1.1%	Rank history: #33 in FY2021, #32 in FY2022, #28 in FY2023, #14 in FY2024 and #20 in FY2025; down 2 since Jul 2024–Jun 2025.
16	V2X, Inc. 5 awardees, including V2X Aerospace LLC, V2X Systems LLC and Vectrus Systems LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$621,035,170	1.1%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #19 in FY2025; up 15 since Jul 2024–Jun 2025.
17	Serco Inc 2 awardees Top agencies Navy (Department of the Navy) PBGC (Pension Benefit Guaranty Corporation) USAF (Department of the Air Force)	$583,233,501	1.0%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023, #15 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
18	Beyond New Horizons, LLC Top agencies USAF (Department of the Air Force)	$435,621,915	0.8%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 1 since Jul 2024–Jun 2025.
19	Peraton Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$397,335,646	0.7%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #16 in FY2025; down 5 since Jul 2024–Jun 2025.
20	Scientific Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOS (Department of State)	$395,991,608	0.7%	Rank history: #21 in FY2021, #26 in FY2022, #22 in FY2023, #24 in FY2024 and #21 in FY2025; up 6 since Jul 2024–Jun 2025.
21	Systems Planning and Analysis, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$334,621,043	0.6%	Rank history: #74 in FY2021, #66 in FY2022, #61 in FY2023, #37 in FY2024 and #30 in FY2025; up 16 since Jul 2024–Jun 2025.
22	Jacobs Government Services Company 22 awardees, including Jacobs Engineering Group Inc., Jacobs / B&V, A Joint Venture (Federal Services) and Jacobs BV A Joint Venture Top agencies Army (Department of the Army) Navy (Department of the Navy) DOT (Department of Transportation)	$295,733,950	0.5%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #28 in FY2025; up 7 since Jul 2024–Jun 2025.
23	Parsons Corporation 5 awardees, including Parsons Government Services Inc., Parsons Technical Services Inc. and Altamira Technologies Corp Top agencies OSD (Office of the Secretary of Defense) DTRA (Defense Threat Reduction Agency) DOE (Department of Energy)	$288,293,449	0.5%	Rank history: #35 in FY2021, #38 in FY2022, #24 in FY2023, #27 in FY2024 and #23 in FY2025; up 2 since Jul 2024–Jun 2025.
24	Tetra Tech, Inc. 27 awardees, including LS Technologies LLC, Advanced Management Technology, Inc. and Tetra TECH / Mason & Hanger Joint Venture Top agencies Army (Department of the Army) DOT (Department of Transportation) DOE (Department of Energy)	$286,124,381	0.5%	Rank history: #26 in FY2021, #21 in FY2022, #23 in FY2023, #22 in FY2024 and #22 in FY2025; down 4 since Jul 2024–Jun 2025.
25	Deloitte Through Deloitte Consulting LLP Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$248,418,008	0.4%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #34 in FY2025; up 8 since Jul 2024–Jun 2025.
26	Arctic Slope Regional Corporation 11 awardees, including Asrc Federal Advanced Research, LLC, Netcentric Technology, LLC and Agile Decision Sciences, LLC Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$236,652,606	0.4%	Rank history: #56 in FY2021, #53 in FY2022, #59 in FY2023, #46 in FY2024 and #29 in FY2025; up 23 since Jul 2024–Jun 2025.
27	KBR Wyle Services LLC 5 awardees, including KBR Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DOT (Department of Transportation)	$231,997,487	0.4%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #24 in FY2025; down 3 since Jul 2024–Jun 2025.
28	DCS Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$225,243,341	0.4%	Rank history: #40 in FY2021, #35 in FY2022, #40 in FY2023, #34 in FY2024 and #31 in FY2025; up 8 since Jul 2024–Jun 2025.
29	ManTech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$209,994,665	0.4%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #26 in FY2025; down 1 since Jul 2024–Jun 2025.
30	Reliance Test & Technology, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$206,316,970	0.4%	Rank history: #41 in FY2021, #31 in FY2022, #33 in FY2023, #33 in FY2024 and #33 in FY2025; up 8 since Jul 2024–Jun 2025.
31	AECOM Technical Services, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$201,978,327	0.4%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #32 in FY2025; down 10 since Jul 2024–Jun 2025.
32	International Business Machines Corporation 3 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DMEA (Defense Microelectronics Activity)	$196,124,768	0.3%	Rank history: #65 in FY2021, #25 in FY2022, #25 in FY2023, #26 in FY2024 and #25 in FY2025; down 9 since Jul 2024–Jun 2025.
33	Ameresco Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) USAF (Department of the Air Force)	$192,989,360	0.3%	Rank history: #71 in FY2021, #45 in FY2022, #54 in FY2023, #73 in FY2024 and #17 in FY2025; down 15 since Jul 2024–Jun 2025.
34	BAE Systems Land & Armaments L.P. Top agencies Army (Department of the Army)	$175,479,900	0.3%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #27 in FY2025; unchanged since Jul 2024–Jun 2025.
35	Trax International Corporation Top agencies Army (Department of the Army)	$173,139,092	0.3%	Rank history: #52 in FY2021, #49 in FY2022, #52 in FY2023, #45 in FY2024 and #37 in FY2025; up 8 since Jul 2024–Jun 2025.
36	Hdr, Inc. 34 awardees, including HDR Environmental, Operations and Construction, Inc., HDR Engineering, Inc. and HDR Architecture, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$169,844,877	0.3%	Rank history: #28 in FY2021, #23 in FY2022, #31 in FY2023, #42 in FY2024 and #39 in FY2025; up 12 since Jul 2024–Jun 2025.
37	Avantus Federal LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security)	$166,420,612	0.3%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023, #39 in FY2024 and #38 in FY2025; up 8 since Jul 2024–Jun 2025.
38	Credence Dynamo Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$164,058,505	0.3%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #42 in FY2025; up 13 since Jul 2024–Jun 2025.
39	Cherokee Nation 7 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Strategic Solutions, L.L.C. and Cherokee Nation Government Solutions, L.L.C. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$163,529,495	0.3%	Rank history: #57 in FY2021, #61 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 374 since Jul 2024–Jun 2025.
40	Guidehouse Inc. 5 awardees, including Peraton Inc., Peraton Technology Services Inc. and Aptim Federal Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$163,183,051	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Fidelity Technology Services, LLC Top agencies Navy (Department of the Navy)	$156,733,193	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Noblis, Inc. Top agencies DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force)	$151,343,508	0.3%	Rank history: #37 in FY2021, #24 in FY2022, #19 in FY2023, #30 in FY2024 and #36 in FY2025; down 2 since Jul 2024–Jun 2025.
43	Honeywell International Inc. 5 awardees, including Honeywell Building Solutions SES Corp Top agencies GSA (General Services Administration) USAF (Department of the Air Force) Army (Department of the Army)	$144,279,992	0.3%	Rank history: #51 in FY2021, #44 in FY2022, #48 in FY2023, not on the FY2024 list and #44 in FY2025; up 11 since Jul 2024–Jun 2025.
44	Applied Research Associates, Inc. Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$142,422,362	0.2%	Rank history: not on the FY2021 list, #39 in FY2022, #34 in FY2023, #38 in FY2024 and #47 in FY2025; down 5 since Jul 2024–Jun 2025.
45	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$135,399,447	0.2%	Rank history: not on the FY2021 list, #33 in FY2022, #44 in FY2023, #29 in FY2024 and #35 in FY2025; down 15 since Jul 2024–Jun 2025.
46	Resource Management Concepts, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$132,750,678	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, #70 in FY2023, #74 in FY2024 and #48 in FY2025; up 18 since Jul 2024–Jun 2025.
47	Bowhead Program Management & Operations, LLC Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$132,579,258	0.2%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023, #55 in FY2024 and #50 in FY2025; up 8 since Jul 2024–Jun 2025.
48	The Mitre Corporation 2 awardees Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security)	$130,778,238	0.2%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; down 1 since Jul 2024–Jun 2025.
49	Precise Systems, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$123,942,075	0.2%	Rank history: #60 in FY2021, #48 in FY2022, #45 in FY2023, #44 in FY2024 and #53 in FY2025; up 9 since Jul 2024–Jun 2025.
50	M.c. Dean, Inc. Top agencies Navy (Department of the Navy) AOUSC (Administrative Office of the U.S. Courts) DISA (Defense Information Systems Agency)	$120,631,077	0.2%	Rank history: #79 in FY2021, #52 in FY2022, #58 in FY2023, #56 in FY2024 and #49 in FY2025; up 6 since Jul 2024–Jun 2025.
51	Modern Technology Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$118,874,052	0.2%	Rank history: not on the FY2021–FY2025 lists; up 308 since Jul 2024–Jun 2025.
52	Miracle Systems LLC Top agencies DHS (Department of Homeland Security) DODEA (Department of Defense Education Activity)	$115,825,044	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #59 in FY2025; up 16 since Jul 2024–Jun 2025.
53	Burns & Mcdonnell Engineering Company, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$113,647,164	0.2%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #41 in FY2025; down 11 since Jul 2024–Jun 2025.
54	Bwxt Enrichment Operations, LLC Top agencies DOE (Department of Energy)	$110,377,952	0.2%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DOT (Department of Transportation)	$110,059,864	0.2%	Rank history: #16 in FY2021, #18 in FY2022, #18 in FY2023, #100 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
56	Noblis MSD LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$109,295,135	0.2%	Rank history: #89 in FY2021, not on the FY2022–FY2023 lists, #50 in FY2024 and #58 in FY2025; up 6 since Jul 2024–Jun 2025.
57	Atlas Technologies Inc. Top agencies Navy (Department of the Navy)	$108,981,659	0.2%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #61 in FY2025; up 14 since Jul 2024–Jun 2025.
58	Mayvin, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Navy (Department of the Navy)	$104,779,436	0.2%	Rank history: not on the FY2021 list, #64 in FY2022, #62 in FY2023, #66 in FY2024 and #56 in FY2025; up 21 since Jul 2024–Jun 2025.
59	Mele Associates Inc. Top agencies DOE (Department of Energy)	$100,244,614	0.2%	Rank history: not on the FY2021 list, #100 in FY2022, #79 in FY2023, #68 in FY2024 and #57 in FY2025; up 10 since Jul 2024–Jun 2025.
60	American Systems Corporation 3 awardees, including Epsilon Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$100,087,647	0.2%	Rank history: #59 in FY2021, #88 in FY2022, #66 in FY2023, #72 in FY2024 and #72 in FY2025; up 24 since Jul 2024–Jun 2025.
61	Asgn Incorporated Through ECS Federal, LLC Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce) DOJ (Department of Justice)	$97,051,352	0.2%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 48 since Jul 2024–Jun 2025.
62	Gryphon Technologies L.C. Top agencies Navy (Department of the Navy)	$96,437,887	0.2%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #62 in FY2025; up 3 since Jul 2024–Jun 2025.
63	Seacorp, LLC Top agencies Navy (Department of the Navy)	$94,849,732	0.2%	Rank history: not on the FY2021 list, #87 in FY2022, #90 in FY2023, #81 in FY2024 and #74 in FY2025; up 36 since Jul 2024–Jun 2025.
64	Apogee Engineering, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) DOD (Department of Defense)	$90,478,342	0.2%	Rank history: #45 in FY2021, #60 in FY2022, not on the FY2023 list, #80 in FY2024 and #63 in FY2025; up 8 since Jul 2024–Jun 2025.
65	Strategic Alliance Solutions LLC Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$89,245,148	0.2%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #67 in FY2025; up 15 since Jul 2024–Jun 2025.
66	Spalding Consulting Inc. Top agencies Navy (Department of the Navy)	$88,570,775	0.2%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #76 in FY2025; up 29 since Jul 2024–Jun 2025.
67	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Army (Department of the Army)	$87,600,584	0.2%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Rite-Solutions, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$86,807,243	0.2%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #84 in FY2025; up 25 since Jul 2024–Jun 2025.
69	Chartis Consulting Corporation Top agencies DHS (Department of Homeland Security) EPA (Environmental Protection Agency) DOI (Department of the Interior)	$86,565,189	0.2%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 105 since Jul 2024–Jun 2025.
70	Torch Technologies Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$85,774,365	0.1%	Rank history: #34 in FY2021, #37 in FY2022, #36 in FY2023, #58 in FY2024 and #64 in FY2025; up 6 since Jul 2024–Jun 2025.
71	Noresco, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) VA (Department of Veterans Affairs)	$85,743,747	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; up 16 since Jul 2024–Jun 2025.
72	Digiflight Incorporated Top agencies Army (Department of the Army)	$83,396,566	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, not on the FY2024 list and #85 in FY2025; up 34 since Jul 2024–Jun 2025.
73	Sev1Tech, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$82,320,726	0.1%	Rank history: not on the FY2021–FY2025 lists; up 149 since Jul 2024–Jun 2025.
74	KMS Solutions, LLC Top agencies Navy (Department of the Navy)	$79,786,318	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 39 since Jul 2024–Jun 2025.
75	Salient Crgt, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$79,618,904	0.1%	Rank history: not on the FY2021–FY2025 lists; up 14 since Jul 2024–Jun 2025.
76	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$78,914,758	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2024–FY2025 lists; up 58 since Jul 2024–Jun 2025.
77	Stracon Services Group LLC Top agencies Navy (Department of the Navy)	$78,531,230	0.1%	Rank history: not on the FY2021–FY2025 lists; up 26 since Jul 2024–Jun 2025.
78	Indus Technology Inc. Top agencies Navy (Department of the Navy)	$78,097,814	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023, #78 in FY2024 and #82 in FY2025; up 12 since Jul 2024–Jun 2025.
79	Valiant Global Defense Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$76,607,451	0.1%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #51 in FY2025; down 27 since Jul 2024–Jun 2025.
80	ITC Defense Corp Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$76,494,889	0.1%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.
81	Simventions Inc. Top agencies Navy (Department of the Navy)	$76,328,957	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, #87 in FY2024 and #73 in FY2025; unchanged since Jul 2024–Jun 2025.
82	Analex Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$76,317,507	0.1%	Rank history: not on the FY2021–FY2025 lists; up 79 since Jul 2024–Jun 2025.
83	Johnson Controls Government Systems, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) GSA (General Services Administration)	$74,925,780	0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; down 20 since Jul 2024–Jun 2025.
84	Vsolvit LLC Top agencies Navy (Department of the Navy)	$74,922,872	0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 26 since Jul 2024–Jun 2025.
85	Raytheon / Lockheed Martin Javelin JV Top agencies Army (Department of the Army)	$74,596,024	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
86	Stantec Inc. 22 awardees, including Stantec Consulting Services Inc., Stantec GS Inc. and Stantec-Aecom Siop JV Top agencies Navy (Department of the Navy) Army (Department of the Army) DOT (Department of Transportation)	$73,763,871	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, not on the FY2024 list and #79 in FY2025; up 11 since Jul 2024–Jun 2025.
87	Cherokee Nation Strategic Programs, L.L.C. Top agencies USAF (Department of the Air Force) DOS (Department of State) DHS (Department of Homeland Security)	$73,476,900	0.1%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #45 in FY2025; down 37 since Jul 2024–Jun 2025.
88	Ch2M Hill, Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Army (Department of the Army)	$72,417,774	0.1%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #92 in FY2025; up 8 since Jul 2024–Jun 2025.
89	AECOM 21 awardees, including AECOM Services, LLC, AECOM Usa, Inc. and AECOM - HDR Joint Venture Design Team JV Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$71,764,479	0.1%	Rank history: #12 in FY2021, #10 in FY2022, #10 in FY2023, #21 in FY2024 and #71 in FY2025; down 14 since Jul 2024–Jun 2025.
90	Sigma Defense Systems LLC Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$69,935,350	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023, not on the FY2024 list and #90 in FY2025; up 10 since Jul 2024–Jun 2025.
91	Southwest Range Services LLC Top agencies Army (Department of the Army)	$69,392,226	0.1%	Rank history: #72 in FY2021, #74 in FY2022, #83 in FY2023, #89 in FY2024 and #97 in FY2025; up 3 since Jul 2024–Jun 2025.
92	F3Ea Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$69,204,174	0.1%	Rank history: not on the FY2021–FY2025 lists; up 273 since Jul 2024–Jun 2025.
93	Falconwood Top agencies Navy (Department of the Navy)	$68,595,389	0.1%	Rank history: #98 in FY2021, #94 in FY2022, #85 in FY2023, not on the FY2024 list and #96 in FY2025; up 11 since Jul 2024–Jun 2025.
94	Global C2 Integration Technologies LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$68,288,640	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Vector Planning & Services LLC Top agencies Navy (Department of the Navy)	$66,501,199	0.1%	Rank history: not on the FY2021–FY2025 lists; up 354 since Jul 2024–Jun 2025.
96	The Mchenry Management Group, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$66,438,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 33 since Jul 2024–Jun 2025.
97	CAE USA Inc. Top agencies Navy (Department of the Navy)	$66,130,680	0.1%	Rank history: not on the FY2021–FY2025 lists; down 11 since Jul 2024–Jun 2025.
98	Mclaughlin Research Corporation Top agencies Navy (Department of the Navy)	$65,985,515	0.1%	Rank history: #94 in FY2021, #99 in FY2022, not on the FY2023–FY2024 lists and #94 in FY2025; down 13 since Jul 2024–Jun 2025.
99	Vettech LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$64,849,731	0.1%	Rank history: not on the FY2021–FY2025 lists; up 60 since Jul 2024–Jun 2025.
100	W R Systems Ltd. Top agencies Navy (Department of the Navy)	$63,478,802	0.1%	Rank history: not on the FY2021–FY2025 lists; up 71 since Jul 2024–Jun 2025.

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100 of 2,848 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54133

Code	Net obligations	Largest contractor
541330 Engineering Services	$54,740,728,350	General Dynamics Corporation

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $57.6 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 54133 contractors in Jul 2025–Jun 2026?

1. General Dynamics Corporation ($8.82B), 2. RTX Corporation ($2.31B), 3. Booz Allen Hamilton Holding Corporation ($1.93B), 4. Lockheed Martin Corporation ($1.91B), 5. Northrop Grumman Corporation ($1.87B), 6. Science Applications International Corporation ($1.58B), 7. Tcom, L.P. ($1.45B), 8. BAE Systems ($1.33B), 9. Amentum Holdings, Inc. ($1.12B), 10. CACI International Inc. ($1.11B).

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