Open All Other Professional, Scientific, and Technical Services solicitations

26 open notices under NAICS 541990 as of October 8, 2026, from SAM.gov and DIBBS. Soonest deadlines first. Award notices, sole source intents and closed notices are left out.

  • Technical Support Services for the FHWA Office of Safety and Operations Research & Development

    693JJ3 ACQUISITION AND GRANTS MGT

    Closes Oct 9, 2026Sources Sought
    Check bid or no bid, freeOpen on SAM.gov

  • USACE Enterprise-Wide Trident Services

    W074 ENDIST WILMINGTON · Wilmington, NC

    Closes Oct 13, 2026Sources Sought
    Check bid or no bid, freeOpen on SAM.gov

  • Combined Synopsis/Solicitation for Commercial Items Agile Professional Services ("APS”) Department of the Army

    W6QK ACC-ORLANDO · Orlando, FL

    Closes Oct 22, 2026Small business set-asideCombined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • 711th HPW Mission Support Services MAC IDIQ

    FA2396 USAF AFMC AFRL PZL AFRL PZLE · Wright Patterson AFB, OH

    Closes Oct 15, 20268(a) set-asideCombined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • EchoMark Email License

    NASA SHARED SERVICES CENTER · Houston, TX

    Closes Oct 15, 2026Small business set-asideCombined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • Q201--HCR- Medical Physicist Contract for Radiology and Dental (VA-26-00023708) Base Contract year 11/01/2026-10/31/2027 VA Finger Lakes

    242-NETWORK CONTRACT OFFICE 02 (36C242)

    Closes Oct 15, 2026SDVOSB set-asidePresolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • U.S. Embassy Mexico—International Narcotics & Law Enforcement Affairs (INL Mexico) CONOCER Criminal Analyst Certification Services

    ACQUISITIONS - AQM MOMENTUM · MEXICO

    Closes Nov 1, 2026Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • Maintenance Service for Portable Fire Extinguishers

    OFFICE OF THE CHIEF PROCUREMENT OFFICER · Washington, DC

    Closes Oct 22, 2026Small business set-asideCombined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • PATRIOT Weapon System Depot-Level Diagnostics, Repair, and Upgrade Support Services (FMS)

    DLA LAND AT ABERDEEN

    Closes Oct 22, 2026Sources Sought
    Check bid or no bid, freeOpen on SAM.gov

  • CEQ Solutions Marketplace and Public-Private Partnership Engagement Support Task Order 094-80JSC026F0110

    NASA JOHNSON SPACE CENTER · Houston, TX

    Closes Oct 23, 2026Small business set-asideSpecial Notice
    Check bid or no bid, freeOpen on SAM.gov

  • Dissemination and maintenance of a Medicaid quality measure over a 12 - month performance period with one additional option period for quality measure maintenance only.

    CDC OFFICE OF ACQUISITION SERVICES · Atlanta, GA

    Closes Oct 23, 2026Presolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • Biometric Identity Services

    DEPARTMENTAL OPERATIONS ACQUISITIONS DIVISION I

    Closes Oct 26, 2026Sources Sought
    Check bid or no bid, freeOpen on SAM.gov

  • USAC RFP: Oracle Operations and Maintenance Services

    FCC · Washington, DC

    Closes Oct 26, 2026Combined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • Vandenberg SFB Tank Inspection

    W071 ENDIST OMAHA

    Closes Oct 30, 2026SDVOSB set-asideCombined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • MARINE RESOURCE TECHNICAL SERVICES THROUGHOUT THE NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND (NAVFAC) PACIFIC AREA OF RESPONSIBILITY

    NAVFACSYSCOM PACIFIC · JBPHH, HI

    Closes Dec 7, 2026Partial small business set-asidePresolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • ACC-APG Industry Update November 2026: Registration and request for topics

    W6QK ACC-APG

    Closes Dec 15, 2026Special Notice
    Check bid or no bid, freeOpen on SAM.gov

  • Evaluate Fire Suppression Bldg. 126 at the Watervliet Arsenal, Watervliet , NY

    AMC · Watervliet, New York, UNITED STATES

    Closes Dec 23, 2026Small business set-aside
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) Historically Underutilized Business Zone (HUBZone) Small Business Set-Aside Continuously Open Solicitation

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 2027HUBZone set-asideSolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open Solicitation

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 2027Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) Women-Owned Small Business (WOSB) Set-Aside Continuously Open Solicitation

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 2027WOSB set-asideSolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) Total Small Business Set-Aside Continuously Open

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 2027Small business set-asideSolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) 8(a) Small Business Set-Aside Continuously Open Solicitation

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 20278(a) set-asideSolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • One Acquisition Solution for Integrated Services Plus (OASIS+) Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside Continuously Open Solicitation

    GSA/FAS/PSHC/OASIS PLUS

    Closes Jan 11, 2027SDVOSB set-asideSolicitation
    Check bid or no bid, freeOpen on SAM.gov

  • FY2027 USPS OIG Broad Agency Announcement

    SUPPLIES MATERIAL MGMT

    Closes Sep 30, 2027Solicitation
    Check bid or no bid, freeOpen on SAM.gov

  • Multiple Award Schedule

    GSA/FAS FURNITURE SYSTEMS MGT DIV · PHILADELPHIA

    Closes Oct 1, 2031Combined Synopsis/Solicitation
    Check bid or no bid, freeOpen on SAM.gov

1 more open notices. Start a free trial to search all of them with your filters.

How to bid on these

How do I find open federal contracts under NAICS 541990?

Federal buyers post solicitations on SAM.gov, and defence supply orders also appear on DIBBS. This page lists the ones open right now under NAICS 541990, soonest deadline first, and leaves out award notices, sole source intents and notices only existing contract holders can answer.

Do I need a SAM.gov registration to bid?

You need an active SAM.gov registration and a Unique Entity ID before an agency can award you a contract. Registration is free and takes a few weeks the first time, so start it before you find a solicitation you want.

What does a set-aside on a notice mean?

It means only companies of that type may compete. A small business set-aside is limited to companies under the SBA size standard for the NAICS code, and an 8(a), HUBZone, WOSB or SDVOSB set-aside also requires that certification on the date the offer is due.

Can I answer a sources sought or presolicitation notice?

Those take no bid yet, but answering one tells the agency a capable small business exists, which is often how work ends up set aside for small business. Each notice says what to send and by when.

Each notice lists its own due date and an amendment can change it, so check the latest version on SAM.gov before you submit. Browse by agency or see the market numbers.