Scientific consulting government contracts
42 open scientific consulting notices under NAICS 541690 right now. Federal buyers posted 130 since Aug 7, 2026.
Latest scientific consulting notices
Open notices first, soonest deadline first. Recently closed ones follow, so you can see what gets bought. Every row links to the official record.
Agencies buying scientific consulting
Who posted notices under NAICS 541690 since Aug 7, 2026, busiest first.
| Agency | Notices | Open now |
|---|---|---|
| Department of Veterans Affairs | 14 | 1 |
| Department of Energy | 10 | 4 |
| U.S. Trade and Development Agency | 10 | 0 |
| Indian Health Service Department of Health and Human Services | 8 | 1 |
| National Oceanic and Atmospheric Administration Department of Commerce | 7 | 2 |
| Interior Departmental Offices Department of the Interior | 7 | 6 |
| Department of the Army Department of Defense | 6 | 2 |
| GSA Federal Acquisition Service General Services Administration | 6 | 0 |
| Department of the Air Force Department of Defense | 5 | 2 |
| Bureau of Indian Affairs Department of the Interior | 5 | 0 |
| National Institutes of Health Department of Health and Human Services | 4 | 0 |
| U.S. Geological Survey Department of the Interior | 3 | 2 |
| Bureau of Ocean Energy Management Department of the Interior | 3 | 1 |
| U.S. Fish and Wildlife Service Department of the Interior | 3 | 2 |
| Federal Railroad Administration Department of Transportation | 2 | 0 |
Every federal buyer is listed in the agency directory.
Who wins scientific consulting contracts
Contractors ranked by value obligated on NAICS 541690 awards.
| Contractor | Awards | Obligated |
|---|---|---|
| Kelly Services, Inc. UEI Y3FCQR7FW2E1 | 375 | $1.3B |
| Domestic Awardees (Undisclosed) UEI KA5HQCLKUVW1 | 3 | $1.1B |
| Booz Allen Hamilton Inc UEI JCBMLGPE6Z71 | 52 | $643M |
| Mantech Advanced Systems International, Inc. UEI JY2BDT2K58Z6 | 5 | $432M |
| Leidos, Inc. UEI MYKLJHTX3MM7 | 2 | $425M |
| Science Applications International Corporation UEI MMLKPW9JLX64 | 13 | $409M |
| System High Corporation UEI L6ALJCC5JF13 | 4 | $393M |
| Lockheed Martin Corporation UEI H7PNSVNN5827 | 1 | $364M |
| Raytheon Company UEI C6Z6WQKFN7M6 | 1 | $358M |
| Michael Stapleton Associates, LTD. UEI NME7GCMWT297 | 6 | $304M |
From federal award records of $1M or more since October 2023. More in the contractor directory.
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Matched, not listed
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Questions people ask
What is NAICS 541690?
NAICS 541690 is the federal industry code for Other Scientific and Technical Consulting Services. Agencies attach it to solicitations for this work, and it decides which small business size standard applies.
Are these real government contracts?
Yes. Every row comes from the public feed of the official source, most often SAM.gov, and links straight to the official notice. Confirm deadlines and amendments there before you respond.
Will this page list every open scientific consulting bid?
No single search can. Agencies sometimes file this work under a neighboring code or describe it differently. Use this page to find leads fast, then check scope, eligibility, and attachments in the official notice.
How often is this page updated?
The list refreshes through the day from the same opportunity database that powers Captivaq. It currently tracks 42 open notices.
How do I hear about new ones without checking back?
Captivaq watches the sources against your company profile and alerts you when a fitting notice posts, then scores the fit and drafts the response. That is the product behind this page.
Keep exploring
Engineering services contracts
Civil, mechanical, and electrical engineering for public projects.
NAICS 541519IT support services contracts
Help desk, maintenance, and other computer services.
NAICS 541715Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) contracts
511 notices, 241 open now.
NAICS 541380Testing Laboratories and Services contracts
333 notices, 94 open now.
NAICS 541990All Other Professional, Scientific, and Technical Services contracts
298 notices, 115 open now.
NAICS 541512Computer systems design contracts
Systems integration, architecture, and design services.
More codes like this one are in professional, scientific, and technical services. Bidding in Canada? Tenders there classify work by UNSPSC rather than NAICS; start from Canadian government tenders.
Captivaq is an independent service from Logesta Labs LLC and is not affiliated with or endorsed by the U.S. government or SAM.gov. The notice on the official source portal is the record that governs; confirm deadlines and amendments there.