NAICS 541690
Other Scientific and Technical Consulting Services
Federal contractor footprint · 276 profiled contractors
Combined Contractor Footprint
$10.2B
Obligations under NAICS 541690 across the 276 GovExpress-profiled contractors that report the code. Not total federal spending in the code, and not de-duplicated across corporate families that file under more than one parent record.
Top Federal Contractors — Other Scientific and Technical Consulting Services
Obligations under NAICS 541690 across the 276 GovExpress-profiled contractors that report the code. Not total federal spending in the code, and not de-duplicated across corporate families that file under more than one parent record.
- DOMESTIC AWARDEES (UNDISCLOSED)$1.8B
- BOOZ ALLEN HAMILTON HOLDING CORPORATION$1.2B
- KELLY SERVICES, INC.$975.6M
- THE MITRE CORPORATION$740.5M
- WESTAT, INC.$537.3M
- RESEARCH TRIANGLE INSTITUTE$530.0M
- AMERESCO INC$353.4M
- PARSONS CORPORATION$261.8M
- BATTELLE MEMORIAL INSTITUTE$225.8M
- HDR, INC$197.7M
Agencies Buying This Code
Estimated by weighting each profiled contractor's agency mix by its NAICS 541690 footprint. Directional, not an agency-by-code total.
Competing in NAICS 541690?
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Obligations under NAICS 541690 across the 276 GovExpress-profiled contractors that report the code. Not total federal spending in the code, and not de-duplicated across corporate families that file under more than one parent record. Spending data from FPDS-NG via USASpending.gov, read between 2026-09-22 and 2026-10-27. Standard 90-day reporting lag per FAR 4.606(c). Read the full methodology.