Top 100 Contractors in PSC C: Architect/Engineer Services, FY2025

Name: Top 100 Contractors in PSC C: Architect/Engineer Services, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 27% of FY2025 PSC C contract dollars

Contract obligations: $6,446,975,032 Net of deobligations, by contracts coded PSC C or a code under it
Contractors: 1,888 Parent companies with an obligation
Largest contractor: AECOM $361 million, 5.2% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	AECOM 29 awardees, including AECOM Technical Services, Inc., AECOM - B&V Usace Med Satoc JV and AECOM Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAID (US Agency for International Development)	$360,673,183	5.2%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and #14 in FY2024; up 13 since FY2024.
2	Jacobs Engineering Group Inc. 27 awardees, including Jacobs Government Services Company, JE Architects / Engineers, P.C. and Jacobs BV A Joint Venture Top agencies Army (Department of the Army) Navy (Department of the Navy) DOT (Department of Transportation)	$303,707,114	4.4%	Rank history: #23 in FY2021, #15 in FY2022, #9 in FY2023 and #4 in FY2024; up 2 since FY2024.
3	Hdr, Inc. 43 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)	$215,130,662	3.1%	Rank history: #2 in FY2021, #3 in FY2022, #4 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Burns & Mcdonnell, Inc. 3 awardees, including Burns & Mcdonnell Engineering Company, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$174,264,690	2.5%	Rank history: #6 in FY2021, #8 in FY2022, #5 in FY2023 and #21 in FY2024; up 17 since FY2024.
5	Caddell Construction Co. (De), LLC Top agencies DOS (Department of State)	$171,902,883	2.5%	Rank history: not on the FY2021–FY2024 lists; new.
6	Parsons Corporation 4 awardees, including Ptsi Managed Services Inc. and Parsons Government Services Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) Army (Department of the Army)	$161,768,039	2.3%	Rank history: #15 in FY2021, #20 in FY2022, #8 in FY2023 and #10 in FY2024; up 4 since FY2024.
7	General Atomics Aeronautical Systems, Inc. Top agencies Army (Department of the Army)	$142,243,092	2.0%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 4 since FY2024.
8	Bristol Bay Native Corporation 9 awardees, including CCI Utility and Construction Services, LLC, SES Infrastructure Services LLC and SES Constructors LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$123,884,895	1.8%	Rank history: not on the FY2021–FY2024 lists; new.
9	WSM Pacific Siop, A Joint Venture Top agencies Navy (Department of the Navy)	$117,070,874	1.7%	Rank history: not on the FY2021 list, #23 in FY2022, #18 in FY2023 and #13 in FY2024; up 4 since FY2024.
10	Tetra Tech, Inc. 29 awardees, including Tetra TECH / Mason & Hanger Joint Venture and Tetra Tech-Black & Veatch JV Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$116,933,101	1.7%	Rank history: #5 in FY2021, #6 in FY2022, #6 in FY2023 and #12 in FY2024; up 2 since FY2024.
11	Ch2M Hill, Inc. Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency) Army (Department of the Army)	$91,693,188	1.3%	Rank history: #53 in FY2021, not on the FY2022–FY2023 lists and #6 in FY2024; down 5 since FY2024.
12	Black & Veatch Special Projects Corp. 2 awardees, including Black & Veatch - GEI JV Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$87,326,265	1.3%	Rank history: #12 in FY2021, #41 in FY2022, #13 in FY2023 and #23 in FY2024; up 11 since FY2024.
13	AED Stratecon LLC Top agencies DOS (Department of State)	$81,685,728	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
14	Stantec Inc. 21 awardees, including Stantec Consulting Services Inc., Stantec GS Inc. and Fsb-Stantec JV Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$75,107,908	1.1%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and #25 in FY2024; up 11 since FY2024.
15	RME / PCI Joint Venture LLC Top agencies DOS (Department of State)	$68,310,504	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
16	Resolution Consultants - An Aecom-Ensafe Joint Venture Top agencies Navy (Department of the Navy)	$64,973,858	0.9%	Rank history: not on the FY2021 list, #92 in FY2022, #16 in FY2023 and #22 in FY2024; up 6 since FY2024.
17	Woolpert, Inc. 2 awardees, including Etrac, A Woolpert Company Top agencies DOI (Department of the Interior) Army (Department of the Army) Commerce (Department of Commerce)	$58,449,536	0.8%	Rank history: #32 in FY2021, #19 in FY2022, #49 in FY2023 and #37 in FY2024; up 20 since FY2024.
18	WSP USA Solutions Inc 12 awardees, including WSP USA Environment & Infrastructure Inc., WSP USA Inc. and WSP Italia S.R.L. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) DOT (Department of Transportation)	$57,606,191	0.8%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #26 in FY2024; up 8 since FY2024.
19	Rogers Lovelock & Fritz Inc. 3 awardees, including RLF & CN JV Top agencies Navy (Department of the Navy) Army (Department of the Army) DHA (Defense Health Agency)	$57,049,964	0.8%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; up 17 since FY2024.
20	EXP U.S. Services Inc. Through EXP Federal Inc. Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command)	$49,134,560	0.7%	Rank history: not on the FY2021–FY2024 lists; up 103 since FY2024.
21	Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration)	$46,936,623	0.7%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 9 since FY2024.
22	CDM Smith Inc. 8 awardees, including CDM International Inc., CDM Federal Programs Corporation and CDM Smith-Arcadis-Wsp Triventure Top agencies USAID (US Agency for International Development) Army (Department of the Army) EPA (Environmental Protection Agency)	$44,079,840	0.6%	Rank history: #17 in FY2021, #21 in FY2022, #30 in FY2023 and #86 in FY2024; up 64 since FY2024.
23	NV5 Global, Inc. 4 awardees, including NV5 Geospatial, Inc., NV5 Consultants, Inc. and Geodynamics LLC Top agencies DOI (Department of the Interior) Commerce (Department of Commerce) Army (Department of the Army)	$43,701,054	0.6%	Rank history: #22 in FY2021, #16 in FY2022, #15 in FY2023 and not on the FY2024 list; returned.
24	Enterprise Engineering, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$42,914,056	0.6%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; up 43 since FY2024.
25	Michael Baker International Holdco Corporation 4 awardees, including Michael Baker International, Inc. and Advancing Resilience In Communities Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DOS (Department of State)	$40,693,822	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
26	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State) DOJ (Department of Justice)	$38,657,658	0.6%	Rank history: #11 in FY2021, #1 in FY2022, #1 in FY2023 and #11 in FY2024; down 15 since FY2024.
27	Jacobs / B&M A Joint Venture Top agencies Navy (Department of the Navy)	$37,153,237	0.5%	Rank history: #59 in FY2021, not on the FY2022 list, #42 in FY2023 and #64 in FY2024; up 37 since FY2024.
28	The Haskell Company 3 awardees, including Benham-Stanley, LLC, Benham - Mead & Hunt and Benham Design, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) AOUSC (Administrative Office of the U.S. Courts)	$33,655,316	0.5%	Rank history: not on the FY2021–FY2024 lists; up 377 since FY2024.
29	Leidos Holdings, Inc. 6 awardees, including Leidos, Inc., Stantec GS - WSP JV and Cardno Tec-Leidos, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$31,016,641	0.4%	Rank history: #35 in FY2021, #37 in FY2022, #22 in FY2023 and #28 in FY2024; down 1 since FY2024.
30	Deployed Resources LLC Top agencies DHS (Department of Homeland Security)	$30,361,176	0.4%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 11 since FY2024.
31	Ea-Baker Partners JV Top agencies DLA (Defense Logistics Agency)	$30,183,460	0.4%	Rank history: not on the FY2021–FY2024 lists; up 199 since FY2024.
32	Miller-Remick, LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DISA (Defense Information Systems Agency)	$27,592,871	0.4%	Rank history: not on the FY2021 list, #73 in FY2022, not on the FY2023 list and #50 in FY2024; up 18 since FY2024.
33	RWE Clean Energy Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$27,536,982	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
34	Huitt-Zollars Mason & Hanger Joint Venture Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$25,870,686	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
35	Merrick & Company 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) USDA (Department of Agriculture)	$24,759,664	0.4%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2024; up 52 since FY2024.
36	Geosyntec Jacobs A Joint Venture Top agencies Navy (Department of the Navy)	$23,764,529	0.3%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #75 in FY2024; up 39 since FY2024.
37	Nve, Inc. Top agencies DOS (Department of State)	$23,653,174	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
38	Focus Revision Partners LLC Top agencies DHS (Department of Homeland Security)	$23,336,320	0.3%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 22 since FY2024.
39	WSP USA Inc. Top agencies Navy (Department of the Navy)	$22,194,341	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
40	Hellmuth, Obata & Kassabaum, Inc. Top agencies GSA (General Services Administration) NRC (Nuclear Regulatory Commission)	$20,655,014	0.3%	Rank history: not on the FY2021–FY2024 lists; up 309 since FY2024.
41	Apex Companies, LLC 2 awardees, including Forsgren Associates Inc. and CWE Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$20,499,067	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
42	Pond-Baker JV Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$20,470,552	0.3%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #45 in FY2024; up 3 since FY2024.
43	Michael Baker International, Inc. 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$20,176,145	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
44	Trevet-Noreas JV LLC Top agencies Navy (Department of the Navy)	$19,951,651	0.3%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 8 since FY2024.
45	Schmidt-Prime Group, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$19,843,694	0.3%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #57 in FY2024; up 12 since FY2024.
46	Ghd-Cowi Joint Venture Top agencies Navy (Department of the Navy)	$19,100,466	0.3%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #41 in FY2024; down 5 since FY2024.
47	Zimmer Gunsul Frasca Architects LLP Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$19,048,245	0.3%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; returned.
48	Dewberry Engineers Inc. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce) DOJ (Department of Justice)	$18,725,008	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 16 since FY2024.
49	Fugro USA Land, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$18,657,038	0.3%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2024; up 35 since FY2024.
50	Anderson Engineering of Minnesota, LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$18,549,991	0.3%	Rank history: #46 in FY2021, not on the FY2022–FY2023 lists and #63 in FY2024; up 13 since FY2024.
51	Apogee Consulting Group, P.a. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$17,982,326	0.3%	Rank history: #67 in FY2021, #50 in FY2022, #33 in FY2023 and not on the FY2024 list; up 173 since FY2024.
52	Mcdonough Bolyard Peck, Inc. 2 awardees Top agencies DOS (Department of State) Smithsonian (Smithsonian Institution)	$17,642,339	0.3%	Rank history: not on the FY2021–FY2024 lists; up 94 since FY2024.
53	Summer Consultants Inc Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$17,564,185	0.3%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #59 in FY2024; up 6 since FY2024.
54	Merrick-Surdex Joint Venture LLP Top agencies DOI (Department of the Interior)	$17,191,063	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, #81 in FY2023 and not on the FY2024 list; up 66 since FY2024.
55	Black & Veatch-Jacobs JV Top agencies Navy (Department of the Navy)	$17,180,547	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 13 since FY2024.
56	Starr II, A Joint Venture Top agencies DHS (Department of Homeland Security)	$17,149,800	0.2%	Rank history: #10 in FY2021, #22 in FY2022, #19 in FY2023 and #29 in FY2024; down 27 since FY2024.
57	The Compass PTS JV Top agencies DHS (Department of Homeland Security)	$17,112,115	0.2%	Rank history: #7 in FY2021, #26 in FY2022, #10 in FY2023 and #35 in FY2024; down 22 since FY2024.
58	K2 Construction Consultants, Inc. Top agencies DHS (Department of Homeland Security)	$16,955,160	0.2%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 38 since FY2024.
59	Mantech SRS Technologies, Inc. Top agencies Navy (Department of the Navy)	$16,740,399	0.2%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 38 since FY2024.
60	D+S International LLC Top agencies DOS (Department of State)	$16,378,010	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
61	Martinez-Drmp JV, LLC Top agencies USAF (Department of the Air Force)	$16,290,489	0.2%	Rank history: not on the FY2021–FY2024 lists; up 146 since FY2024.
62	KMF Architects, LLC Through KZF Design Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration)	$16,175,985	0.2%	Rank history: not on the FY2021–FY2024 lists; up 203 since FY2024.
63	Colby Co LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$16,173,476	0.2%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; up 18 since FY2024.
64	Himalayan Builders and Engineers Pvt. Ltd Top agencies Navy (Department of the Navy)	$16,056,338	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
65	Reid Middleton, Inc. 2 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOS (Department of State)	$15,668,697	0.2%	Rank history: not on the FY2021 list, #56 in FY2022, not on the FY2023 list and #66 in FY2024; up 1 since FY2024.
66	Merrick-Rs & H Joint Venture LLP Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$15,588,115	0.2%	Rank history: #90 in FY2021, not on the FY2022 list, #32 in FY2023 and not on the FY2024 list; up 63 since FY2024.
67	Baker-Aecom Environmental Compliance JV Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$15,557,653	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, #70 in FY2023 and #98 in FY2024; up 31 since FY2024.
68	Coover Clark and Associates Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOI (Department of the Interior)	$15,419,861	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
69	Spees-Hernandez JV LLC 2 awardees, including Spees LLC and Spees-Reid Middleton JV, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$15,245,886	0.2%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #99 in FY2024; up 30 since FY2024.
70	Ameresco Inc. 2 awardees, including Ameresco Select, Inc. Top agencies USDA (Department of Agriculture) VA (Department of Veterans Affairs) Army (Department of the Army)	$15,179,504	0.2%	Rank history: not on the FY2021–FY2024 lists; up 394 since FY2024.
71	Utility Works A Joint Venture Top agencies Navy (Department of the Navy)	$15,120,521	0.2%	Rank history: not on the FY2021 list, #24 in FY2022, not on the FY2023 list and #70 in FY2024; down 1 since FY2024.
72	Spur Design LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$14,977,740	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #93 in FY2024; up 21 since FY2024.
73	The Johnson-Mcadams Firm, P.a. Top agencies USDA (Department of Agriculture) Navy (Department of the Navy) USAF (Department of the Air Force)	$14,793,530	0.2%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and #51 in FY2024; down 22 since FY2024.
74	Rore Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$14,449,494	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
75	Smith-Miller + Hawkinson Architects, LLP Top agencies GSA (General Services Administration)	$14,391,209	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
76	Ch2M Hill Clark Nexsen Energy Partners JV Top agencies Navy (Department of the Navy)	$14,098,846	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, #75 in FY2023 and #38 in FY2024; down 38 since FY2024.
77	Above Group Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) Army (Department of the Army)	$13,923,343	0.2%	Rank history: not on the FY2021–FY2024 lists; up 194 since FY2024.
78	Acuity - Pt&C, LLC Top agencies Army (Department of the Army)	$13,548,389	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
79	Mark Cavagnero Associates Top agencies DOS (Department of State)	$13,474,270	0.2%	Rank history: not on the FY2021 list, #84 in FY2022 and not on the FY2023–FY2024 lists; returned.
80	Jacobs Geosyntec A Joint Venture Top agencies NASA (National Aeronautics and Space Administration)	$13,458,085	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
81	Design Partners, Incorporated Top agencies Navy (Department of the Navy) Army (Department of the Army)	$13,397,370	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #58 in FY2024; down 23 since FY2024.
82	Vali Cooper International LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) HHS (Department of Health and Human Services)	$13,356,765	0.2%	Rank history: #77 in FY2021, #94 in FY2022 and not on the FY2023–FY2024 lists; up 42 since FY2024.
83	Page Southerland Page, Inc. 3 awardees, including Page Federal Solutions, LLC Top agencies DOS (Department of State) GSA (General Services Administration) DOI (Department of the Interior)	$13,208,259	0.2%	Rank history: not on the FY2021–FY2024 lists; up 86 since FY2024.
84	MBF Architects, P.a. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) DLA (Defense Logistics Agency)	$13,039,261	0.2%	Rank history: not on the FY2021 list, #70 in FY2022, #72 in FY2023 and #53 in FY2024; down 31 since FY2024.
85	Desbuild Incorporated Top agencies DOS (Department of State)	$12,938,141	0.2%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and #39 in FY2024; down 46 since FY2024.
86	Barlovento LLC Top agencies DHS (Department of Homeland Security)	$12,888,115	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
87	Clark Nexsen/ Michael Baker JV Top agencies Navy (Department of the Navy)	$12,781,439	0.2%	Rank history: not on the FY2021–FY2024 lists; up 95 since FY2024.
88	Johnson, Mirmiran & Thompson, Inc. 2 awardees, including Clark Nexsen Inc. Top agencies USDA (Department of Agriculture) DOT (Department of Transportation) DHS (Department of Homeland Security)	$12,762,687	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
89	Jg&A-Tsg JV Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$12,674,068	0.2%	Rank history: not on the FY2021–FY2024 lists; up 76 since FY2024.
90	Paragon-Jacobs Joint Venture, LLC Top agencies Army (Department of the Army)	$12,620,817	0.2%	Rank history: not on the FY2021–FY2024 lists; up 26 since FY2024.
91	Element Environmental, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$12,307,623	0.2%	Rank history: #69 in FY2021 and not on the FY2022–FY2024 lists; up 47 since FY2024.
92	Alliance WSP JV, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$12,216,505	0.2%	Rank history: not on the FY2021–FY2024 lists; up 40 since FY2024.
93	RMA Architects Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$12,177,551	0.2%	Rank history: not on the FY2021–FY2024 lists; up 85 since FY2024.
94	Dmyles Inc. Top agencies Army (Department of the Army)	$12,019,483	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
95	Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$12,016,268	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
96	Mn-Bmcd ML Joint Venture Top agencies Navy (Department of the Navy)	$12,003,983	0.2%	Rank history: not on the FY2021–FY2024 lists; up 75 since FY2024.
97	Affiliated Engineers Metro DC, Inc. Top agencies HHS (Department of Health and Human Services)	$11,645,322	0.2%	Rank history: not on the FY2021–FY2024 lists; up 161 since FY2024.
98	Roen Salvage Co. Top agencies Army (Department of the Army)	$11,492,050	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
99	Blair Remy Merrick MP Joint Venture, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$11,433,580	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
100	Alliance One Group LLC Top agencies Navy (Department of the Navy)	$11,419,183	0.2%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.

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100 of 1,888 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC C

Code	Net obligations	Largest contractor
C2 Architect-Engineering Services – General	$4,738,703,500	AECOM
C1 Architect-Engineering Services – Construction	$1,708,271,532	Parsons 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 $6.94 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
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 PSC C contractors in FY2025?

1. AECOM ($361M), 2. Jacobs Engineering Group Inc. ($304M), 3. Hdr, Inc. ($215M), 4. Burns & Mcdonnell, Inc. ($174M), 5. Caddell Construction Co. (De), LLC ($172M), 6. Parsons Corporation ($162M), 7. General Atomics Aeronautical Systems, Inc. ($142M), 8. Bristol Bay Native Corporation ($124M), 9. WSM Pacific Siop, A Joint Venture ($117M), 10. Tetra Tech, Inc. ($117M).

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