NAICS 541990 · All Other Professional, Scientific, And Technical Services
224 open opportunities · 14,702 FY2025 awards · $18.77B obligated
Top contractors in this NAICS
- Booz Allen Hamilton INC$980.9M
- The Mitre Corporation$862.1M
- Sierra Nevada Company, LLC$815.0M
- Ptsi Managed Services INC$360.2M
- Caci, INC. - Federal$273.2M
Hunting recompetes here?
10+ contracts in this NAICS end within 18 months. The largest are listed below — incumbents and end dates included.
All expiring 541990 contracts →Open opportunities
- Sequencing Services for Prnp Genotyping.
- Deadline
- Sep 15, 2026(10d)
- Agency
- ANIMAL AND PLANT HEALTH INSPECTION SERVICE
- Type
- Solicitation
- NAICS
- 541990
- Posted
- Sep 3, 2026
- 711th HPW Mission Support Services MAC IDIQ
- Deadline
- Sep 16, 2026(11d)
- Agency
- DEPT OF THE AIR FORCE
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541990
- Posted
- Sep 3, 2026
- 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
- Deadline
- Aug 16, 2026
- Agency
- DEPT OF THE ARMY
- Type
- Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- Multi X Office (MXO01) Operations Support Services
- Deadline
- —
- Agency
- DEFENSE ADVANCED RESEARCH PROJECTS AGENCY (DARPA)
- Type
- Award Notice
- NAICS
- 541990
- Posted
- Sep 2, 2026
- Atlantic Undersea Test and Evaluation Center (AUTEC) Pay and Benefit Study
- Deadline
- Sep 15, 2026(10d)
- Agency
- DEPT OF THE NAVY
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- Notice of Intent to Sole Source to HUBZone, DHS CISA SHARES
- Deadline
- Sep 9, 2026(4d)
- Agency
- OFFICE OF PROCUREMENT OPERATIONS
- Type
- Special Notice
- NAICS
- 541990
- Posted
- Sep 2, 2026
- B--IHNV GENOTYPING PROGRAM UPGRADE
- Deadline
- Sep 8, 2026(3d)
- Agency
- US GEOLOGICAL SURVEY
- Type
- Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- TECOM Range and Training Area Management (RTAM) Support Services M00264-26-R-0005
- Deadline
- Sep 24, 2026(19d)
- Agency
- DEPT OF THE NAVY
- Type
- Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- R--Science and Technical Support Services (STSSC) For Core Science Systems (CSS) and Rocky Mountain Region (RMR) - Add Additional Labor Categories and change key personnel.
- Deadline
- —
- Agency
- US GEOLOGICAL SURVEY
- Type
- Award Notice
- NAICS
- 541990
- Posted
- Sep 2, 2026
- R405--VHA Salary Survey Data Collection & Analysis (VA-26-00056720) Morgan/Strawbridge
- Deadline
- Sep 8, 2026(3d)
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Presolicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- International Organization for Standards (ISO) 17025 Accreditation
- Deadline
- Sep 24, 2026(19d)
- Agency
- FOREST SERVICE
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- 26-482 SEFSC Deep Coral Reef Monitoring Program Su
- Deadline
- Sep 8, 2026(3d)
- Agency
- NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- Post-Construction Environmental Compliance Monitoring Services in support of MT FLAP BOR 2980(1) Sun River Bridge Replacement
- Deadline
- Sep 10, 2026(5d)
- Agency
- FEDERAL HIGHWAY ADMINISTRATION
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
- D--Intent to Award
- Deadline
- —
- Agency
- US GEOLOGICAL SURVEY
- Type
- Special Notice
- NAICS
- 541990
- Posted
- Sep 2, 2026
- S2 Cognition
- Deadline
- Sep 8, 2026(3d)
- Agency
- DEPT OF THE ARMY
- Type
- Solicitation
- NAICS
- 541990
- Posted
- Sep 2, 2026
Largest contracts ending within 18 months
- 47QFCA24F0043 ↗$518.2M
ADMIN ONLY
- Ends
- Sep 14, 2026
- Started
- Sep 15, 2024
- Agency
- Federal Acquisition Service
- NAICS
- 541990
- 47QFCA24F0037 ↗$515.6M
SERVICE SOLUTIONS FOR MODERNIZATION ANALYSIS READINESS CAPABILITY THREAT AND TRAINING SSMARTT
- Ends
- Sep 8, 2026
- Started
- Sep 9, 2024
- Agency
- Federal Acquisition Service
- NAICS
- 541990
- FA870225CB001 ↗$377.9M
MITRE NATIONAL SECURITY ENGINEERING CENTER (NSEC) SERVICES FOR THE AIR FORCE
- Ends
- Sep 29, 2026
- Started
- Sep 30, 2025
- Agency
- Department Of The Air Force
- NAICS
- 541990
- 47QFCA23F0016 ↗$301.6M
USAFRICOM PERSONNEL RECOVERY ENTERPRISE SERVICES AND SOLUTIONS PRESS OBLIGATION OF FUNDING.
- Ends
- Feb 27, 2027
- Started
- Feb 28, 2023
- Agency
- Federal Acquisition Service
- NAICS
- 541990
- DESC0014664 ↗$254.8M
MANAGEMENT OF THE OAK RIDGE INSTITUTE FOR SCIENCE AND EDUCATION.
- Ends
- Sep 29, 2026
- Started
- Mar 9, 2016
- Agency
- Department Of Energy
- NAICS
- 541990
- FA862025FB029 ↗$246.7M
AFLCMC/WI
- Ends
- Oct 30, 2026
- Started
- Oct 31, 2024
- Agency
- Department Of The Air Force
- NAICS
- 541990
- HQ003424F0422 ↗$175.5M
INFORMATION, TECHNOLOGY, AND EXPLORATORY RESEARCH AND DEVELOPMENT.
- Ends
- Feb 23, 2028
- Started
- Aug 22, 2024
- Agency
- Washington Headquarters Services
- NAICS
- 541990
- 47QFCA24F0018 ↗$158.5M
GLOBAL OPERATIONAL SUPPORT INFORMATION INSIGHT AND THREAT GOSIIT
- Ends
- May 18, 2027
- Started
- May 19, 2024
- Agency
- Federal Acquisition Service
- NAICS
- 541990
- 7200AA23C00012 ↗$156.4M
PREVENTION OF MALARIA THROUGH VECTOR CONTROL (PMI EVOLVE)
- Ends
- Dec 17, 2027
- Started
- Dec 14, 2022
- Agency
- Agency For International Development
- NAICS
- 541990
- 75N99225F00001 ↗$116.1M
PROFESSIONAL, TECHNICAL, AND ADMINISTRATIVE SERVICES
- Ends
- Jun 18, 2027
- Started
- Jun 19, 2025
- Agency
- National Institutes Of Health
- NAICS
- 541990
| PIID | Contractor | Description | Agency | NAICS | Obligated | Start | End |
|---|---|---|---|---|---|---|---|
| 47QFCA24F0043 ↗ | Hii Mission Technologies Corp | ADMIN ONLY | Federal Acquisition Service | 541990 | $518.2M | Sep 15, 2024 | Sep 14, 2026 |
| 47QFCA24F0037 ↗ | Booz Allen Hamilton INC | SERVICE SOLUTIONS FOR MODERNIZATION ANALYSIS READINESS CAPABILITY THREAT AND TRAINING SSMARTT | Federal Acquisition Service | 541990 | $515.6M | Sep 9, 2024 | Sep 8, 2026 |
| FA870225CB001 ↗ | The Mitre Corporation | MITRE NATIONAL SECURITY ENGINEERING CENTER (NSEC) SERVICES FOR THE AIR FORCE | Department Of The Air Force | 541990 | $377.9M | Sep 30, 2025 | Sep 29, 2026 |
| 47QFCA23F0016 ↗ | Hii Mission Technologies Corp | USAFRICOM PERSONNEL RECOVERY ENTERPRISE SERVICES AND SOLUTIONS PRESS OBLIGATION OF FUNDING. | Federal Acquisition Service | 541990 | $301.6M | Feb 28, 2023 | Feb 27, 2027 |
| DESC0014664 ↗ | Oak Ridge Associated Universities, Incorporated | MANAGEMENT OF THE OAK RIDGE INSTITUTE FOR SCIENCE AND EDUCATION. | Department Of Energy | 541990 | $254.8M | Mar 9, 2016 | Sep 29, 2026 |
| FA862025FB029 ↗ | Sierra Nevada Company, LLC | AFLCMC/WI | Department Of The Air Force | 541990 | $246.7M | Oct 31, 2024 | Oct 30, 2026 |
| HQ003424F0422 ↗ | Institute For Defense Analyses | INFORMATION, TECHNOLOGY, AND EXPLORATORY RESEARCH AND DEVELOPMENT. | Washington Headquarters Services | 541990 | $175.5M | Aug 22, 2024 | Feb 23, 2028 |
| 47QFCA24F0018 ↗ | Caci, INC. - Federal | GLOBAL OPERATIONAL SUPPORT INFORMATION INSIGHT AND THREAT GOSIIT | Federal Acquisition Service | 541990 | $158.5M | May 19, 2024 | May 18, 2027 |
| 7200AA23C00012 ↗ | Abt Global LLC | PREVENTION OF MALARIA THROUGH VECTOR CONTROL (PMI EVOLVE) | Agency For International Development | 541990 | $156.4M | Dec 14, 2022 | Dec 17, 2027 |
| 75N99225F00001 ↗ | Booz Allen Hamilton INC | PROFESSIONAL, TECHNICAL, AND ADMINISTRATIVE SERVICES | National Institutes Of Health | 541990 | $116.1M | Jun 19, 2025 | Jun 18, 2027 |