Engineering and Technical Services Government Contracts
PSC R425 Service code
Code facts
- Spend category
- Professional Services Technical and Engineering Services (non-IT)
- Part of
-
-
R
- R4
-
R
- Contract obligations
- $34,688,931,445 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Top buying agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $10,047,495,068 | |
| 2 | Department of the Navy | $6,363,607,178 | |
| 3 | Department of the Army | $4,978,656,869 | |
| 4 | Department of Homeland Security | $1,482,694,993 | |
| 5 | Department of Transportation | $1,017,662,002 | |
| 6 | Department of Energy | $824,335,351 | |
| 7 | National Aeronautics and Space Administration | $793,853,587 | |
| 8 | Missile Defense Agency | $429,712,400 | |
| 9 | Office of the Secretary of Defense | $394,284,625 | |
| 10 | US Special Operations Command | $269,673,983 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | General Atomics Aeronautical Systems, Inc. | $1,014,742,761 | |
| 2 | The Aerospace Corporation | $1,004,657,115 | |
| 3 | Caci, Inc. - Federal | $804,718,966 | |
| 4 | Science Applications International Corporation | $570,296,594 | |
| 5 | Booz Allen Hamilton Inc. | $555,520,307 | |
| 6 | The Mitre Corporation | $490,330,579 | |
| 7 | Lockheed Martin Corp | $485,808,261 | |
| 8 | Beyond New Horizons, LLC | $449,834,261 | |
| 9 | Amentum Technology, Inc. | $405,881,586 | |
| 10 | Northrop Grumman Systems Corp | $377,623,779 |
See the full FY2025 ranking of PSC R425 contractors, by parent company.
Open contract opportunities
Show 15 more
Latest 25 of 52 listed here. See the rest on GovTribe.
Recent contract awards
Latest 10 of 2,938 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $123,100,102 |
| FY2026 | $28,069,949,268 |
| FY2025 | $34,688,931,445 |
| FY2024 | $34,466,731,492 |
| FY2023 | $31,584,741,280 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541330 Engineering Services | $13,164,059,923 | |
| 2 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $4,102,577,154 | |
| 3 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $1,742,957,364 | |
| 4 | 541512 Computer Systems Design Services | $1,333,557,376 | |
| 5 | 541990 All Other Professional, Scientific, and Technical Services | $1,263,542,338 | |
| 6 | 488190 Other Support Activities for Air Transportation | $800,224,291 | |
| 7 | 336411 Aircraft Manufacturing | $790,994,777 | |
| 8 | 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | $708,576,955 | |
| 9 | 541519 Other Computer Related Services | $557,428,304 | |
| 10 | 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing | $521,129,967 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $5,431,902,916 | |
| 2 | California | $4,030,128,744 | |
| 3 | Maryland | $2,108,453,583 | |
| 4 | District of Columbia | $1,570,077,982 | |
| 5 | Massachusetts | $1,523,021,509 | |
| 6 | Florida | $1,448,862,308 | |
| 7 | Alabama | $1,422,991,922 | |
| 8 | Texas | $1,071,617,671 | |
| 9 | Colorado | $989,406,864 | |
| 10 | Georgia | $715,875,164 | |
| 11 | Tennessee | $576,633,504 | |
| 12 | Arizona | $555,679,275 | |
| 13 | New Jersey | $511,302,963 | |
| 14 | Oklahoma | $503,056,911 | |
| 15 | Nevada | $502,743,486 | |
| 16 | Pennsylvania | $444,322,898 | |
| 17 | South Carolina | $442,330,022 | |
| 18 | Utah | $320,042,380 | |
| 19 | Indiana | $271,312,007 | |
| 20 | Ohio | $269,725,531 | |
| 21 | West Virginia | $254,995,717 | |
| 22 | New Mexico | $247,181,146 | |
| 23 | New Hampshire | $210,721,924 | |
| 24 | New York | $199,747,190 | |
| 25 | Illinois | $154,086,913 | |
| 26 | North Carolina | $138,971,979 | |
| 27 | Iowa | $104,818,390 | |
| 28 | Hawaii | $103,824,166 | |
| 29 | Michigan | $103,453,458 | |
| 30 | Alaska | $101,663,306 | |
| 31 | Washington | $99,262,737 | |
| 32 | Wisconsin | $73,343,999 | |
| 33 | Vermont | $72,944,940 | |
| 34 | Connecticut | $69,493,896 | |
| 35 | South Dakota | $53,122,887 | |
| 36 | Nebraska | $48,091,229 | |
| 37 | Kansas | $38,217,104 | |
| 38 | Louisiana | $37,427,813 | |
| 39 | Kentucky | $28,515,845 | |
| 40 | Oregon | $25,319,718 | |
| 41 | Idaho | $24,998,503 | |
| 42 | Missouri | $14,706,978 | |
| 43 | Maine | $14,172,188 | |
| 44 | Mississippi | $12,176,218 | |
| 45 | Rhode Island | $12,024,438 | |
| 46 | Puerto Rico | $11,483,255 | |
| 47 | North Dakota | $8,088,813 | |
| 48 | Minnesota | $4,798,361 | |
| 49 | Montana | $4,371,243 | |
| 50 | Arkansas | $2,080,735 | |
| 51 | Delaware | $808,149 | |
| 52 | Wyoming | $483,761 | |
| 53 | Guam | $186,789 |
Show all 53
Shares are of everything obligated under PSC R425 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Definition
Includes: System Engineering, Technical Assistance and Other Services Used to Support the Program Office During the Acquisition Cycle
Excludes: Language Translation and Sign Language Interpretation (PSC R608)
Quick answers
What is PSC R425?
PSC R425 is Engineering and Technical Services, a service code in PSC R, Support Services (Professional, Administrative, Management).
How many government contracts for engineering and technical services are there?
52 contract opportunities under PSC R425 are open now, and 327 notices were posted in the last 90 days. Federal agencies awarded 2,938 contracts under PSC R425 in the last 12 months, obligating $27,376,438,072.
How much do federal agencies spend under PSC R425?
Federal contracts under PSC R425 obligated $34,688,931,445 in fiscal year 2025 and $128,933,453,586 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC R425?
The contractors with the most obligated under PSC R425 in fiscal years 2026 and 2027 are General Atomics Aeronautical Systems, Inc. ($1,014,742,761); The Aerospace Corporation ($1,004,657,115); and Caci, Inc. - Federal ($804,718,966).
Which agencies buy the most under PSC R425?
The agencies that obligated the most under PSC R425 in fiscal years 2026 and 2027 are Air Force ($10,047,495,068), Department of the Navy ($6,363,607,178) and Department of the Army ($4,978,656,869).
Which NAICS codes are used with PSC R425?
The NAICS codes with the most obligated under PSC R425 in fiscal years 2026 and 2027 are 541330 Engineering Services; 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); and 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology).
Where is the work under PSC R425 performed?
By place of performance, the states with the most contract obligations under PSC R425 over the last 12 months are Virginia ($5,431,902,916), California ($4,030,128,744) and Maryland ($2,108,453,583).
What is the latest open contract opportunity under PSC R425?
The latest open contract opportunity under PSC R425 is PM Support Contract, pre-solicitation from ENDIST New Orleans (USACE), posted November 13, 2026.
On GovTribe
See everything under PSC R425
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code