All Other Professional, Scientific, and Technical Services government contracts
105 open All Other Professional, Scientific, and Technical Services notices under NAICS 541990 right now. Federal buyers posted 271 since Aug 7, 2026.
Latest All Other Professional, Scientific, and Technical Services 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 All Other Professional, Scientific, and Technical Services
Who posted notices under NAICS 541990 since Aug 7, 2026, busiest first.
| Agency | Notices | Open now |
|---|---|---|
| Department of the Army Department of Defense | 41 | 15 |
| U.S. Geological Survey Department of the Interior | 31 | 27 |
| National Oceanic and Atmospheric Administration Department of Commerce | 27 | 11 |
| Department of Veterans Affairs | 23 | 8 |
| Department of the Air Force Department of Defense | 16 | 4 |
| Department of the Navy Department of Defense | 15 | 5 |
| Federal Highway Administration Department of Transportation | 13 | 3 |
| National Institutes of Health Department of Health and Human Services | 11 | 0 |
| Forest Service Department of Agriculture | 10 | 4 |
| National Park Service Department of the Interior | 9 | 1 |
| U.S. Special Operations Command Department of Defense | 7 | 0 |
| Bureau of Reclamation Department of the Interior | 7 | 3 |
| Defense Health Agency Department of Defense | 7 | 4 |
| Centers for Disease Control and Prevention Department of Health and Human Services | 6 | 0 |
| GSA Federal Acquisition Service General Services Administration | 5 | 0 |
Every federal buyer is listed in the agency directory.
Who wins All Other Professional, Scientific, and Technical Services contracts
Contractors ranked by value obligated on NAICS 541990 awards.
| Contractor | Awards | Obligated |
|---|---|---|
| Battelle Energy Alliance, LLC UEI HG7XL5RBNX55 | 1 | $26.4B |
| The Mitre Corporation UEI GAVABYGCURL7 | 13 | $4.5B |
| Oak Ridge Associated Universities, Incorporated UEI JW7MLW3RRK34 | 14 | $3.5B |
| Army Sustainment LLC UEI TEDMNT3CZ2K6 | 1 | $3.5B |
| Domestic Awardees (Undisclosed) UEI KA5HQCLKUVW1 | 38 | $3B |
| Sierra Nevada Company, LLC UEI N1PWVLN6F4U1 | 77 | $2.6B |
| Sierra Nevada Company, LLC UEI DD2QET4D27T3 | 104 | $2.4B |
| Booz Allen Hamilton Inc UEI JCBMLGPE6Z71 | 126 | $2.3B |
| Institute for Defense Analyses UEI JM98J68UPRK1 | 32 | $2.2B |
| The Mitre Corporation UEI DMHDNDCPWUD1 | 240 | $2B |
From federal award records of $1M or more since October 2023. More in the contractor directory.
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Questions people ask
What is NAICS 541990?
NAICS 541990 is the federal industry code for All Other Professional, Scientific, and Technical 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 All Other Professional, Scientific, and Technical Services 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 105 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
IT support services contracts
Help desk, maintenance, and other computer services.
NAICS 541330Engineering services contracts
Civil, mechanical, and electrical engineering for public projects.
NAICS 541715Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) contracts
354 notices, 181 open now.
NAICS 541380Testing Laboratories and Services contracts
332 notices, 82 open now.
NAICS 541611Management consulting contracts
Program management, strategy, and administrative consulting.
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.