NAICS codes › 541690
NAICS 541690 — Other Scientific and Technical Consulting Services: federal contracts
9 open federal contract opportunities classified under NAICS 541690 (Other Scientific and Technical Consulting Services) on SAM.gov, refreshed nightly.
Open solicitations
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- DISA Command, Control, Communications, and Computers Enterprise (J6 C4E) Directorate Pentagon (J6P) Security Support Services (J6 S3)
- Senior Advisor Subject Matter Expert (SME) with Pharmaceutical Development and Pain Expertise for the NINDS
- RELAP5-3D 4.x: Thermal-Hydraulic Nuclear Reactor Analysis, Licensing Opportunity
- R--Technical Services Support
- Safety, Prevention, Epidemiology, and Education Development for Health Care and Antimicrobial Resistance - SPEED 2027-2032
- Monitoring and Evaluation of Russian River Coho Salmon
- INJECTION WELL FAILURE MODE EVALUATION
- FY27 BOTANY SURVEYS
- FY27 - EXPERT REVIEW BOARDS
Who buys NAICS 541690
| Agency | Obligations, 24 mo | Actions |
|---|---|---|
| Department of Defense (DoD) | $641.7M | 344 |
| Department of Health and Human Services (HHS) | $280.7M | 593 |
| Department of Energy (DOE) | $64.0M | 27 |
| Department of the Interior (DOI) | $62.1M | 138 |
| Department of Veterans Affairs (VA) | $61.9M | 197 |
| General Services Administration (GSA) | $54.4M | 303 |
| Department of Commerce (DOC) | $51.6M | 146 |
| Department of Homeland Security (DHS) | $49.7M | 43 |
| Department of the Treasury | $32.2M | 62 |
| Department of Transportation (DOT) | $30.8M | 52 |
Who wins NAICS 541690 work
| Contractor | Obligations, 24 mo | Awards |
|---|---|---|
| GENERAL DYNAMICS ONE SOURCE LLC | $202.0M | 10 |
| PARSONS GOVERNMENT SERVICES INC. | $138.9M | 2 |
| V2X AEROSPACE LLC | $51.2M | 3 |
| GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. | $42.4M | 9 |
| NATIONAL ACADEMY OF SCIENCES | $39.0M | 61 |
| UNWIN CO | $37.4M | 1 |
| KELLY SERVICES, INC. | $37.2M | 223 |
| HARVARD PILGRIM HEALTH CARE, INC. | $32.9M | 1 |
| GOLDBELT PROFESSIONAL SERVICES, LLC | $32.7M | 4 |
| PUNDIR GROUP, INC | $28.6M | 291 |
NAICS 541690 contracts expiring in the next 18 months
986 contracts worth $3.5B. The largest:
| Incumbent | Buyer | What | Value | Ends | Est. solicitation | Record |
|---|---|---|---|---|---|---|
| SYSTEM HIGH CORPORATION | Defense Advanced Research Projects Agency | 541690 Other Scientific and Technical Consulting Services | $146.4M | 20 March 2027 | Now / imminent | Details |
| MICHAEL STAPLETON ASSOCIATES, LTD. | Department of State | 541690 Other Scientific and Technical Consulting Services | $128.2M | 29 March 2027 | Now / imminent | Details |
| KELLY SERVICES, INC. | Office of the Assistant Secretary for Financial Resources | 541690 Other Scientific and Technical Consulting Services | $127.9M (98 orders) | 21 June 2027 | ~Q4 2026 | Details |
| AMERESCO SELECT, INC. | Navy | 541690 Other Scientific and Technical Consulting Services | $112.7M | 30 September 2027 | ~Q2 2027 | Details |
| AMERESCO SELECT, INC. | Air Force | 541690 Other Scientific and Technical Consulting Services | $100.8M | 31 May 2027 | ~Q4 2026 | Details |
| SYSTEM HIGH CORPORATION | Missile Defense Agency | 541690 Other Scientific and Technical Consulting Services | $87.8M | 25 August 2027 | ~Q1 2027 | Details |
| PARSONS GOVERNMENT SERVICES INC. | Air Force | 541690 Other Scientific and Technical Consulting Services | $72.9M | 31 March 2027 | Now / imminent | Details |
| DOMESTIC AWARDEES (UNDISCLOSED) | Agency for International Development | 541690 Other Scientific and Technical Consulting Services | $70.4M | 25 April 2028 | ~Q4 2027 | Details |
| KELLY SERVICES, INC. | NIH | 541690 Other Scientific and Technical Consulting Services | $57.1M (6 orders) | 30 May 2027 | ~Q4 2026 | Details |
| IDS INTERNATIONAL, LLC | Department of State | 541690 Other Scientific and Technical Consulting Services | $54.6M | 31 March 2027 | Now / imminent | Details |
Every expiring NAICS 541690 contract →
Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.
Open solicitations by set-aside
| Set-aside | Open |
|---|---|
| Small business | 4 |
| Unrestricted (full and open) | 4 |
| 8(a) | 1 |
From the set-aside SAM.gov declares on each open notice.
Who counts as small under this code
SBA size standard for NAICS 541690: $15.5M annual receipts.
Each solicitation carries exactly one NAICS code, and that code — not a related one in the same family — decides who counts as small.
One code, chosen by the contracting officer, decides who counts as small. A related code in the same family does not qualify you, and the assignment itself can be appealed to SBA OHA.
Source: FAR 19.102, current as of 07 August 2026 · eCFR.
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DoD (5,756) · VA (347) · DHS (152) · USDA (121) · DOI (113) · DOE (106) · HHS (89) · GSA (80) · DOJ (80) · NASA (80) · State Department (65) · DOT (55) · DOC (33) · Treasury (20) · EPA (16) · Postal Service (7) · Administrative Office of the US Courts (6) · Library of Congress (5) · Millennium Challenge Corporation (5) · NSF (5) · United States Government Publishing Office (5) · Federal Deposit Insurance Corporation (4) · HUD (4) · Export-Import Bank of the US (3)
Browse by NAICS code
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