NAICS 541990 – All Other Professional, Scientific, and Technical Services

Browse 467+ active federal contract opportunities classified under NAICS 541990.

Recent Opportunities

• J042--Fire Alarm System Inspection, Testing, Maintenance, and Certification Services at the Bedford VA Medical Center
  Agency: VETERANS AFFAIRS, DEPARTMENT OF Posted: Jul 27, 2026 Due: Aug 10, 2026 NAICS: 541990 Set-Aside: SDVOSBC Location: MA
• Air Operations Center Replication Cell (AOC RC) Support
  Agency: DEPT OF DEFENSE Posted: Jul 27, 2026 Due: Aug 12, 2026 NAICS: 541990 Set-Aside: NONE Location: FL
• Enterprise Logistics and Installation Support Services Commercial Solutions Opening (CSO)
  Agency: DEPT OF DEFENSE Posted: Jul 27, 2026 NAICS: 541990 Set-Aside: NONE Location: DC
• B--S. UDDIN - NEW SC
  Agency: INTERIOR, DEPARTMENT OF THE Posted: Jul 25, 2026 NAICS: 541990
• R--Counter Nuclear Smuggling System Deployment (CNSSD
  Agency: ENERGY, DEPARTMENT OF Posted: Jul 24, 2026 NAICS: 541990
• Collecting Eye Tracking and Vehicle Kinematics Data from Alternative Intersection and Interchange Sites
  Agency: TRANSPORTATION, DEPARTMENT OF Posted: Jul 24, 2026 Due: Aug 11, 2026 NAICS: 541990 Set-Aside: NONE
• R--NEW SSC CELIA RATELIFF
  Agency: INTERIOR, DEPARTMENT OF THE Posted: Jul 24, 2026 NAICS: 541990
• Notice of Intent (NOI) to Sole Source (SS) / Ted Stevens Center (TSC) Support Services
  Agency: DEPT OF DEFENSE Posted: Jul 24, 2026 Due: Jul 30, 2026 NAICS: 541990 Set-Aside: 8AN Location: AK
• Re-Posting Solicitation: W911QY-26-R-A007 - Capability Program Executive - Ground (Soldier Systems), Project Manager Soldier Medical Devices (PM SMD), Materiel Fielding and Medical Liaison Support Services
  Agency: DEPT OF DEFENSE Posted: Jul 24, 2026 Due: Aug 13, 2026 NAICS: 541990 Set-Aside: SBA
• Functional MRI following Transcranial Direct Current Stimulation (tDCS)
  Agency: HEALTH AND HUMAN SERVICES, DEPARTMENT OF Posted: Jul 24, 2026 Due: Aug 3, 2026 NAICS: 541990 Set-Aside: NONE Location: MD
• Notice of Intent to Sole Source – Lori Carson Consulting LLC
  Agency: HEALTH AND HUMAN SERVICES, DEPARTMENT OF Posted: Jul 24, 2026 NAICS: 541990 Location: MD
• J042--Fire Alarm System Inspection, Testing, Maintenance, and Certification Services at the Bedford VA Medical Center
  Agency: VETERANS AFFAIRS, DEPARTMENT OF Posted: Jul 23, 2026 Due: Aug 10, 2026 NAICS: 541990 Set-Aside: SDVOSBC Location: MA
• Air Operations Center Replication Cell (AOC RC) Support
  Agency: DEPT OF DEFENSE Posted: Jul 23, 2026 Due: Aug 12, 2026 NAICS: 541990 Set-Aside: NONE Location: FL
• R408--Radiation Oncology Assessment Services
  Agency: VETERANS AFFAIRS, DEPARTMENT OF Posted: Jul 23, 2026 NAICS: 541990 Set-Aside: SBA
• Average Annual Daily Traffic - Data Collection
  Agency: TRANSPORTATION, DEPARTMENT OF Posted: Jul 23, 2026 Due: Jul 30, 2026 NAICS: 541990 Set-Aside: NONE Location: DC
• Independent External Peer Reviews for the US Army Corps of Engineers
  Agency: DEPT OF DEFENSE Posted: Jul 23, 2026 Due: Jul 31, 2026 NAICS: 541990
• 2d MarDiv CUAS ADFOR Support
  Agency: DEPT OF DEFENSE Posted: Jul 23, 2026 Due: Jul 31, 2026 NAICS: 541990 Set-Aside: SBA Location: NC
• MALU ETHNOGRAPHIC OVERVIEW MLK, JR. NHP
  Agency: INTERIOR, DEPARTMENT OF THE Posted: Jul 23, 2026 Due: Aug 13, 2026 NAICS: 541990 Set-Aside: SBA
• H--NCAO Fire Extinguisher and CO2 Services
  Agency: INTERIOR, DEPARTMENT OF THE Posted: Jul 23, 2026 NAICS: 541990
• 2d MarDiv CUAS ADFOR Support
  Agency: DEPT OF DEFENSE Posted: Jul 23, 2026 Due: Jul 31, 2026 NAICS: 541990 Set-Aside: SBA Location: NC
• J042--Fire Alarm System Inspection, Testing, Maintenance, and Certification Services at the Bedford VA Medical Center
  Agency: VETERANS AFFAIRS, DEPARTMENT OF Posted: Jul 23, 2026 Due: Aug 10, 2026 NAICS: 541990 Set-Aside: SDVOSBC Location: MA
• J--GC26 - MAINTENANCE OF JANUS FIRE
  Agency: INTERIOR, DEPARTMENT OF THE Posted: Jul 22, 2026 Due: Jul 28, 2026 NAICS: 541990 Set-Aside: SBA
• Aeronautics and Space Programs and Policies Studies (ASPPS)
  Agency: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Posted: Jul 22, 2026 Due: Aug 6, 2026 NAICS: 541990 Set-Aside: NONE Location: DC
• Engine Water Sample Testing for MH-65E aircraft
  Agency: HOMELAND SECURITY, DEPARTMENT OF Posted: Jul 22, 2026 Due: Aug 10, 2026 NAICS: 541990 Set-Aside: SBA
• Biometrics Operations Division Examination Support Services
  Agency: DEPT OF DEFENSE Posted: Jul 22, 2026 Due: Aug 5, 2026 NAICS: 541990 Set-Aside: NONE Location: WV

Data sourced from SAM.gov. Updated daily. Last updated: July 28, 2026.