Who wins federal All Other Professional, Scientific, and Technical Services contracts
Federal agencies obligated $11.9 billion on contracts under NAICS 541990 (All Other Professional, Scientific, and Technical Services) in fiscal year 2025. The largest contractor listed was Battelle Energy Alliance, LLC ($1.9 billion).
Who wins
| Contractor | FY2025 obligations | Share |
|---|---|---|
| Battelle Energy Alliance, LLC | $1.9 billion | 16.3% |
| Booz Allen Hamilton INC | $633.4 million | 5.3% |
| Sierra Nevada Company, LLC | $593.6 million | 5.0% |
| The MITRE Corporation | $557.9 million | 4.7% |
| Hii Mission Technologies Corp | $479.2 million | 4.0% |
| Institute for Defense Analyses | $246.9 million | 2.1% |
| Oak Ridge Associated Universities, Incorporated | $221.5 million | 1.9% |
| Northrop Grumman Systems Corporation | $180.9 million | 1.5% |
| The Johns Hopkins University Applied Physics Laboratory LLC | $171.5 million | 1.4% |
| Dai Global LLC | $164.5 million | 1.4% |
| Path | $157.7 million | 1.3% |
| Abt Global LLC | $150.9 million | 1.3% |
| Ptsi Managed Services INC | $144.8 million | 1.2% |
| Deloitte Consulting LLP | $138.0 million | 1.2% |
| Research Triangle Institute | $132.9 million | 1.1% |
| Caci, Inc. - Federal | $130.8 million | 1.1% |
| General Dynamics Information Technology, Inc. | $124.1 million | 1.0% |
| Bluestaq LLC | $115.8 million | 1.0% |
| Strategic Analysis, Inc. | $106.9 million | 0.9% |
| The Cna Corporation | $106.6 million | 0.9% |
| Qlarant Integrity Solutions LLC | $98.3 million | 0.8% |
| The Rand Corporation | $93.6 million | 0.8% |
| Ecs Federal, LLC | $92.4 million | 0.8% |
| The MITRE Corporation | $87.2 million | 0.7% |
| Northrop Grumman Systems Corporation | $85.9 million | 0.7% |
Who buys
| Agency | FY2025 obligations | Share |
|---|---|---|
| Department of Defense | $5.2 billion | 43.4% |
| Department of Energy | $2.2 billion | 18.8% |
| Department of Health and Human Services | $1.2 billion | 10.2% |
| Agency for International Development | $1.1 billion | 9.0% |
| General Services Administration | $1.0 billion | 8.7% |
| Department of Transportation | $325.3 million | 2.7% |
| Department of Commerce | $204.9 million | 1.7% |
| Department of Homeland Security | $131.1 million | 1.1% |
| National Aeronautics and Space Administration | $92.0 million | 0.8% |
| Department of State | $87.6 million | 0.7% |
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Source and coverage
Source: USAspending.gov, the U.S. Treasury's public record of federal spending, retrieved 2026-11-01. Figures are contract obligations (award types A, B, C and D) for federal fiscal year 2025, October 2024 to September 2025. Covers the 100 largest NAICS codes by federal spending. This is federal money only. State, city and town contracts are not included. Obligations can be negative when earlier amounts are withdrawn, some classified work is not reported, and contractors that may be individuals are left out of the name lists, so a list is not a complete ranking of everyone paid. Pushbuild is not affiliated with any agency or company listed.