Top 42 Contractors in PSC C223: Architect and Engineering – General: Mechanical Systems, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation Through Orbital Sciences LLC Top agencies NASA (National Aeronautics and Space Administration)	$49,655,249	86.9%	Rank history: #2 in FY2022 and not on the FY2023–FY2024 lists; unchanged since FY2020.
2	Nelson Engineering Co. Top agencies NASA (National Aeronautics and Space Administration)	$1,718,810	3.0%	Rank history: #8 in FY2022, #11 in FY2023 and #29 in FY2024; up 36 since FY2020.
3	Apogee Consulting Group, P.a. Top agencies VA (Department of Veterans Affairs)	$511,981	0.9%	Rank history: #20 in FY2022, #6 in FY2023 and #30 in FY2024; up 14 since FY2020.
4	Kyowa Technologies Co.,Ltd. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$498,833	0.9%	Rank history: #4 in FY2022, #24 in FY2023 and #32 in FY2024; up 1 since FY2020.
5	Romanyk Consulting Corporation Top agencies VA (Department of Veterans Affairs)	$495,554	0.9%	Rank history: #16 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
6	Rogers, Lovelock & Fritz, Inc. Top agencies Navy (Department of the Navy)	$488,238	0.9%	Rank history: not on the FY2022 list, #13 in FY2023 and not on the FY2024 list; new, not ranked in FY2020.
7	AECOM Through AECOM Technical Services, Inc. Top agencies Navy (Department of the Navy)	$319,417	0.6%	Rank history: not on the FY2022 list, #23 in FY2023 and not on the FY2024 list; up 8 since FY2020.
8	Burns & Mcdonnell, Inc. Through Burns & Mcdonnell Engineering Company, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$308,958	0.5%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
9	Alberto Izzo & Partners S.R.L. Top agencies Navy (Department of the Navy)	$267,893	0.5%	Rank history: #10 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
10	Westeast Design Group, LLC Top agencies USAF (Department of the Air Force)	$258,828	0.5%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
11	Bowman, Foster & Associates, Inc. Top agencies Navy (Department of the Navy)	$237,117	0.4%	Rank history: #5 in FY2022, #12 in FY2023 and #37 in FY2024; new, not ranked in FY2020.
12	Specialized Engineering Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$222,100	0.4%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
13	Symmes Maini & Mckee Associates Inc. Top agencies Navy (Department of the Navy)	$207,680	0.4%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
14	Premier Stanley JV LLC Top agencies USAF (Department of the Air Force)	$168,195	0.3%	Rank history: not on the FY2022–FY2023 lists and #10 in FY2024; new, not ranked in FY2020.
15	Obrien Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$156,170	0.3%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
16	Summer Consultants, Inc. Top agencies GSA (General Services Administration)	$131,622	0.2%	Rank history: not on the FY2022–FY2024 lists; up 11 since FY2020.
17	So.in.ci. SRL Top agencies USAF (Department of the Air Force)	$104,932	0.2%	Rank history: #13 in FY2022, not on the FY2023 list and #33 in FY2024; down 1 since FY2020.
18	Wiley Wilson Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy)	$85,790	0.2%	Rank history: #19 in FY2022, not on the FY2023 list and #11 in FY2024; down 10 since FY2020.
19	Heapy Engineering, Inc. Top agencies USAF (Department of the Air Force)	$83,591	0.1%	Rank history: not on the FY2022–FY2024 lists; up 11 since FY2020.
20	Advantix Engineering Corp Top agencies DOI (Department of the Interior)	$80,142	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
21	P2S LP Top agencies Navy (Department of the Navy)	$79,698	0.1%	Rank history: #24 in FY2022 and not on the FY2023–FY2024 lists; down 14 since FY2020.
22	Pace Collaborative, PLLC Top agencies Navy (Department of the Navy)	$76,060	0.1%	Rank history: #17 in FY2022 and not on the FY2023–FY2024 lists; down 4 since FY2020.
23	Glmv Architecture Inc. Top agencies USAF (Department of the Air Force)	$72,632	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
24	Engineering Tools S.R.L. Top agencies USAF (Department of the Air Force)	$70,545	0.1%	Rank history: #31 in FY2022 and not on the FY2023–FY2024 lists; up 4 since FY2020.
25	Thomas Dean & Hoskins Inc. Top agencies USAF (Department of the Air Force)	$68,439	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
26	Toland Mizell Molnar LLC Top agencies VA (Department of Veterans Affairs)	$68,337	0.1%	Rank history: #12 in FY2022, #7 in FY2023 and #14 in FY2024; new, not ranked in FY2020.
27	Batson, Inc. Top agencies HHS (Department of Health and Human Services)	$65,741	0.1%	Rank history: #15 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
28	Socio-Ecological Concepts LLC Top agencies GSA (General Services Administration)	$65,497	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
29	Dimension IV - Madison LLC Top agencies USDA (Department of Agriculture)	$56,740	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
30	Preventive Maintenance Services Company Top agencies USDA (Department of Agriculture)	$55,275	0.1%	Rank history: #23 in FY2022 and not on the FY2023–FY2024 lists; down 4 since FY2020.
31	Case, Lowe & Hart, Inc. Top agencies USDA (Department of Agriculture)	$50,970	0.1%	Rank history: not on the FY2022 list, #28 in FY2023 and not on the FY2024 list; new, not ranked in FY2020.
32	Croft and Associates, Inc. Top agencies DOI (Department of the Interior)	$47,200	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
33	Above Group Inc. Top agencies VA (Department of Veterans Affairs)	$38,915	0.1%	Rank history: #30 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
34	Jacobs Government Services Company Top agencies Navy (Department of the Navy)	$24,814	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
35	Smiths Group PLC Through Smiths Detection Inc. Top agencies DOJ (Department of Justice)	$23,055	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
36	Levin Porter Associates Inc. Top agencies VA (Department of Veterans Affairs)	$17,098	<0.1%	Rank history: #26 in FY2022 and not on the FY2023–FY2024 lists; up 1 since FY2020.
37	Thomas A Carcaterra Pe LLC Top agencies GSA (General Services Administration)	$16,800	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
38	Continental Construction and Engineering LLC Top agencies DOI (Department of the Interior)	$12,580	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
39	Sustainable Engineering JV Top agencies USAF (Department of the Air Force)	$9,920	<0.1%	Rank history: not on the FY2022–FY2024 lists; down 28 since FY2020.
40	DAV Energy Solutions, Inc. Top agencies Navy (Department of the Navy)	$9,535	<0.1%	Rank history: #25 in FY2022, #16 in FY2023 and #6 in FY2024; new, not ranked in FY2020.
41	Kone Inc. Top agencies DHS (Department of Homeland Security)	$2,701	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
42	Miscelaneos Security Services Sociedad Anonima Top agencies DOS (Department of State)	$968	<0.1%	Rank history: not on the FY2022–FY2024 lists; down 9 since FY2020.

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 $57.1 million 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.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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.

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