Top 100 Contractors in NAICS 541330: Engineering Services, FY2025

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

The top 10 won 39% of FY2025 NAICS 541330 contract dollars

Ranking facts

Contract obligations
$52,797,980,381 Net of deobligations, by contracts coded NAICS 541330
Contractors
3,727 Parent companies with an obligation
Largest contractor
General Dynamics Corporation $7.5 billion, 13.5% of obligations
Data as of

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 $7,497,247,867
Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2 $2,241,133,193
Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023 and #2 in FY2024; unchanged since FY2024.
3 $1,876,185,680
Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023 and #4 in FY2024; up 1 since FY2024.
4 $1,771,764,890
Rank history: #5 in FY2021, #4 in FY2022, #2 in FY2023 and #3 in FY2024; down 1 since FY2024.
5 $1,770,177,074
Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023 and #5 in FY2024; unchanged since FY2024.
6 $1,692,075,892
Rank history: #10 in FY2021, #9 in FY2022, #6 in FY2023 and #6 in FY2024; unchanged since FY2024.
7 $1,387,180,148
Rank history: #44 in FY2021, #43 in FY2022, #47 in FY2023 and #40 in FY2024; up 33 since FY2024.
8 $1,320,789,180
Rank history: #7 in FY2021, #7 in FY2022, #8 in FY2023 and #7 in FY2024; down 1 since FY2024.
9 $1,177,327,651
Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 54 since FY2024.
10 $1,138,984,295
Rank history: #8 in FY2021, #11 in FY2022, #9 in FY2023 and #9 in FY2024; down 1 since FY2024.
11 $893,260,497
Rank history: #13 in FY2021, #8 in FY2022, #11 in FY2023 and #8 in FY2024; down 3 since FY2024.
12 $827,104,030
Rank history: #9 in FY2021, #12 in FY2022, #12 in FY2023 and #11 in FY2024; down 1 since FY2024.
13 $808,551,272
Rank history: #6 in FY2021, #6 in FY2022, #7 in FY2023 and #13 in FY2024; unchanged since FY2024.
14 $737,333,019
Rank history: #20 in FY2021, #16 in FY2022, #14 in FY2023 and #10 in FY2024; down 4 since FY2024.
15 $555,402,553
Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #15 in FY2024; unchanged since FY2024.
16 $546,901,369
Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; unchanged since FY2024.
17 $539,582,479
Rank history: #71 in FY2021, #45 in FY2022, #54 in FY2023 and #73 in FY2024; up 56 since FY2024.
18 $536,146,435
Rank history: not on the FY2021–FY2024 lists; new.
19 $436,659,408
Rank history: #26 in FY2021, #21 in FY2022, #23 in FY2023 and #22 in FY2024; up 3 since FY2024.
20 $420,971,604
Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; up 16 since FY2024.
21 $398,714,815
Rank history: #33 in FY2021, #32 in FY2022, #28 in FY2023 and #14 in FY2024; down 7 since FY2024.
22 $362,347,497
Rank history: #21 in FY2021, #26 in FY2022, #22 in FY2023 and #24 in FY2024; up 2 since FY2024.
23 $338,081,230
Rank history: #12 in FY2021, #10 in FY2022, #10 in FY2023 and #21 in FY2024; down 2 since FY2024.
24 $309,852,048
Rank history: #35 in FY2021, #38 in FY2022, #24 in FY2023 and #27 in FY2024; up 3 since FY2024.
25 $303,630,285
Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 2 since FY2024.
26 $288,710,213
Rank history: #37 in FY2021, #24 in FY2022, #19 in FY2023 and #30 in FY2024; up 4 since FY2024.
27 $275,281,181
Rank history: #74 in FY2021, #66 in FY2022, #61 in FY2023 and #37 in FY2024; up 10 since FY2024.
28 $274,312,910
Rank history: #65 in FY2021, #25 in FY2022, #25 in FY2023 and #26 in FY2024; down 2 since FY2024.
29 $264,642,061
Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; down 9 since FY2024.
30 $262,316,395
Rank history: not on the FY2021–FY2023 lists and #53 in FY2024; up 23 since FY2024.
31 $242,338,571
Rank history: #56 in FY2021, #53 in FY2022, #59 in FY2023 and #46 in FY2024; up 15 since FY2024.
32 $234,383,623
Rank history: #40 in FY2021, #35 in FY2022, #40 in FY2023 and #34 in FY2024; up 2 since FY2024.
33 $220,095,613
Rank history: #41 in FY2021, #31 in FY2022, #33 in FY2023 and #33 in FY2024; unchanged since FY2024.
34 $214,784,004
Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 9 since FY2024.
35 $205,722,153
Rank history: not on the FY2021 list, #33 in FY2022, #44 in FY2023 and #29 in FY2024; down 6 since FY2024.
36 $205,135,367
Rank history: #57 in FY2021, #61 in FY2022, #46 in FY2023 and not on the FY2024 list; up 245 since FY2024.
37 $182,420,058
Rank history: #83 in FY2021 and not on the FY2022–FY2024 lists; returned.
38 $180,686,315
Rank history: #28 in FY2021, #23 in FY2022, #31 in FY2023 and #42 in FY2024; up 4 since FY2024.
39 $178,764,392
Rank history: #52 in FY2021, #49 in FY2022, #52 in FY2023 and #45 in FY2024; up 6 since FY2024.
40 $176,068,924
Rank history: #46 in FY2021, #47 in FY2022, #38 in FY2023 and #95 in FY2024; up 55 since FY2024.
41 $176,045,637
Rank history: not on the FY2021–FY2024 lists; new.
42 $171,325,498
Rank history: not on the FY2021–FY2024 lists; new.
43 $165,011,570
Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; up 28 since FY2024.
44 $158,285,162
Rank history: not on the FY2021–FY2024 lists; up 79 since FY2024.
45 $157,153,589
Rank history: #97 in FY2021, #58 in FY2022, #56 in FY2023 and #41 in FY2024; down 4 since FY2024.
46 $155,848,321
Rank history: #51 in FY2021, #44 in FY2022, #48 in FY2023 and not on the FY2024 list; up 84 since FY2024.
47 $151,611,873
Rank history: not on the FY2021 list, #39 in FY2022, #34 in FY2023 and #38 in FY2024; down 9 since FY2024.
48 $137,683,834
Rank history: not on the FY2021 list, #96 in FY2022, #70 in FY2023 and #74 in FY2024; up 26 since FY2024.
49 $136,361,119
Rank history: #60 in FY2021, #48 in FY2022, #45 in FY2023 and #44 in FY2024; down 5 since FY2024.
50 $133,627,178
Rank history: not on the FY2021–FY2024 lists; new.
51 $132,875,673
Rank history: #79 in FY2021, #52 in FY2022, #58 in FY2023 and #56 in FY2024; up 5 since FY2024.
52 $122,856,822
Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; up 18 since FY2024.
53 $120,932,434
Rank history: not on the FY2021–FY2024 lists; up 417 since FY2024.
54 $117,232,258
Rank history: #27 in FY2021, #27 in FY2022, #26 in FY2023 and #18 in FY2024; down 36 since FY2024.
55 $117,070,874
Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and #59 in FY2024; up 4 since FY2024.
56 $115,328,692
Rank history: not on the FY2021–FY2024 lists; new.
57 $114,188,556
Rank history: not on the FY2021 list, #64 in FY2022, #62 in FY2023 and #66 in FY2024; up 9 since FY2024.
58 $112,071,044
Rank history: not on the FY2021 list, #100 in FY2022, #79 in FY2023 and #68 in FY2024; up 10 since FY2024.
59 $110,872,775
Rank history: not on the FY2021–FY2024 lists; new.
60 $108,635,527
Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; unchanged since FY2024.
61 $107,738,279
Rank history: not on the FY2021–FY2024 lists; up 140 since FY2024.
62
Atlas Technologies Inc.
$104,239,860
Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 3 since FY2024.
63 $103,028,147
Rank history: not on the FY2021–FY2024 lists; new.
64 $97,727,007
Rank history: not on the FY2021–FY2024 lists; new.
65
Gryphon Technologies L.C.
$97,520,678
Rank history: not on the FY2021–FY2023 lists and #43 in FY2024; down 22 since FY2024.
66 $94,181,629
Rank history: #45 in FY2021, #60 in FY2022, not on the FY2023 list and #80 in FY2024; up 14 since FY2024.
67 $93,759,510
Rank history: #34 in FY2021, #37 in FY2022, #36 in FY2023 and #58 in FY2024; down 9 since FY2024.
68 $91,445,537
Rank history: not on the FY2021–FY2024 lists; up 51 since FY2024.
69
The Johns Hopkins University Applied Physics Laboratory LLC
$90,624,515
Rank history: not on the FY2021–FY2024 lists; new.
70
CORE4CE LLC 2 awardees, including Azimuth Corporation
$88,340,086
Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; down 9 since FY2024.
71 $87,756,438
Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; up 12 since FY2024.
72
Black & Veatch Special Projects Corp. 2 awardees, including Black & Veatch - GEI JV
$86,964,820
Rank history: not on the FY2021–FY2024 lists; up 43 since FY2024.
73 $86,491,029
Rank history: not on the FY2021–FY2024 lists; new.
74 $85,745,350
Rank history: #43 in FY2021, #51 in FY2022, #80 in FY2023 and not on the FY2024 list; returned.
75 $83,420,518
Rank history: #59 in FY2021, #88 in FY2022, #66 in FY2023 and #72 in FY2024; down 3 since FY2024.
76 $82,699,425
Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #87 in FY2024; up 11 since FY2024.
77 $80,917,853
Rank history: not on the FY2021 list, #87 in FY2022, #90 in FY2023 and #81 in FY2024; up 4 since FY2024.
78 $79,651,189
Rank history: not on the FY2021–FY2024 lists; new.
79
Spalding Consulting Inc.
$78,074,158
Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 7 since FY2024.
80
Imagine One Technology & Management Ltd.
$78,030,470
Rank history: not on the FY2021–FY2024 lists; up 106 since FY2024.
81 $75,927,338
Rank history: not on the FY2021–FY2024 lists; up 340 since FY2024.
82 $74,990,456
Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and not on the FY2024 list; up 46 since FY2024.
83 $74,314,095
Rank history: not on the FY2021–FY2024 lists; new.
84 $73,557,481
Rank history: not on the FY2021–FY2024 lists; up 41 since FY2024.
85 $73,248,460
Rank history: not on the FY2021–FY2024 lists; new.
86 $72,752,633
Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #78 in FY2024; down 8 since FY2024.
87 $70,598,312
Rank history: not on the FY2021–FY2023 lists and #64 in FY2024; down 23 since FY2024.
88 $70,107,456
Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and not on the FY2024 list; up 15 since FY2024.
89 $69,565,088
Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and not on the FY2024 list; up 51 since FY2024.
90 $69,382,089
Rank history: not on the FY2021–FY2024 lists; up 75 since FY2024.
91 $69,106,306
Rank history: not on the FY2021–FY2024 lists; up 160 since FY2024.
92 $68,854,331
Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 4 since FY2024.
93 $68,242,881
Rank history: not on the FY2021–FY2024 lists; up 25 since FY2024.
94 $67,171,353
Rank history: not on the FY2021–FY2024 lists; up 8 since FY2024.
95 $67,018,583
Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; down 38 since FY2024.
96 $67,000,000
Rank history: not on the FY2021–FY2024 lists; new.
97 $66,148,578
Rank history: #94 in FY2021, #99 in FY2022 and not on the FY2023–FY2024 lists; up 11 since FY2024.
98 $66,129,727
Rank history: not on the FY2021–FY2024 lists; up 309 since FY2024.
99 $66,013,820
Rank history: #98 in FY2021, #94 in FY2022, #85 in FY2023 and not on the FY2024 list; up 6 since FY2024.
100 $64,973,858
Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #97 in FY2024; down 3 since FY2024.
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100 of 3,727 contractors listed here. See the rest on GovTribe.

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 $55.7 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 NAICS 541330 contractors in FY2025?

1. General Dynamics Corporation ($7.5B), 2. Lockheed Martin Corporation ($2.24B), 3. RTX Corporation ($1.88B), 4. Booz Allen Hamilton Holding Corporation ($1.77B), 5. Northrop Grumman Systems Corporation ($1.77B), 6. BAE Systems ($1.69B), 7. Tcom, L.P. ($1.39B), 8. Science Applications International Corporation ($1.32B), 9. Amentum Holdings, Inc. ($1.18B), 10. CACI International Inc. ($1.14B).

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