NAICS 541690 · Other Scientific And Technical Consulting Services
56 open opportunities · 6,010 FY2025 awards · $3.46B obligated
Top contractors in this NAICS
- Kelly Services, INC.$170.7M
- System High Corporation$107.4M
- Lockheed Martin Corporation$101.3M
- Unwin Co$73.6M
- Pundir Group, INC$62.0M
Hunting recompetes here?
10+ contracts in this NAICS end within 18 months. The largest are listed below — incumbents and end dates included.
All expiring 541690 contracts →Open opportunities
- Antiterrorism Support Services
- Deadline
- Nov 17, 2026(5d)
- Agency
- DEPT OF THE ARMY
- Type
- Sources Sought
- NAICS
- 541690
- Posted
- Nov 10, 2026
- R--Technical Services Support
- Deadline
- Nov 20, 2026(8d)
- Agency
- ENERGY, DEPARTMENT OF
- Type
- Solicitation
- NAICS
- 541690
- Posted
- Nov 10, 2026
- VA Magnetic Resonance Safety Expert Services
- Deadline
- Sep 21, 2026
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Solicitation
- NAICS
- 541690
- Posted
- Nov 9, 2026
- Natural Resource Investigations in the Upper Mississippi River Basin, Mississippi Valley Division (MVD)
- Deadline
- Dec 4, 2026(22d)
- Agency
- DEPT OF THE ARMY
- Type
- Sources Sought
- NAICS
- 541690
- Posted
- Nov 9, 2026
- H365--Diagnostic Medical Physics for the VA Central California Health Care System
- Deadline
- Nov 13, 2026(1d)
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Sources Sought
- NAICS
- 541690
- Posted
- Nov 6, 2026
- 2 Senior Advisors Services for the NINDS Blueprint Neurotherapeutic Network for Small Molecules External Oversight Committee (EOC) Subject Matter Expert (SME) Services
- Deadline
- Nov 9, 2026
- Agency
- OFFICE OF THE ASSISTANT SECRETARY FOR FINANCIAL RESOURCES (ASFR)
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541690
- Posted
- Nov 5, 2026
- Respirator Fit Testing
- Deadline
- Nov 5, 2026
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541690
- Posted
- Nov 4, 2026
- Clinical Research Support and Collaboration for NHGRI Protocols
- Deadline
- Nov 13, 2026(1d)
- Agency
- NATIONAL INSTITUTES OF HEALTH
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541690
- Posted
- Nov 3, 2026
- B--INJECTION WELL FAILURE MODE EVALUATION
- Deadline
- Nov 13, 2026(1d)
- Agency
- DEPARTMENTAL OFFICES
- Type
- Solicitation
- NAICS
- 541690
- Posted
- Nov 3, 2026
- AFCENT Battle Lab Commercial Solutions Opening
- Deadline
- —
- Agency
- DEPT OF THE AIR FORCE
- Type
- Special Notice
- NAICS
- 541690
- Posted
- Nov 3, 2026
- F-35 Joint Strike Fighter Joint Program Office Security Services
- Deadline
- Nov 4, 2026
- Agency
- DEPT OF THE NAVY
- Type
- Special Notice
- NAICS
- 541690
- Posted
- Nov 3, 2026
- 6635--Dosimetry and Exposure Monitoring Services - VISN 1 BPA
- Deadline
- Nov 9, 2026
- Agency
- VETERANS AFFAIRS, DEPARTMENT OF
- Type
- Special Notice
- NAICS
- 541690
- Posted
- Nov 2, 2026
- Senior Advisor Subject Matter Expert (SME) with Pharmaceutical Development and Pain Expertise for the NINDS
- Deadline
- Nov 2, 2026
- Agency
- OFFICE OF THE ASSISTANT SECRETARY FOR ADMINISTRATION (ASA)
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541690
- Posted
- Oct 30, 2026
- Senior Advisor 2 for Biological Therapeutics Development to act as External Oversight Committee (EOC) Subject Matter Expert (SME) Services.
- Deadline
- Nov 5, 2026
- Agency
- OFFICE OF THE ASSISTANT SECRETARY FOR FINANCIAL RESOURCES (ASFR)
- Type
- Combined Synopsis/Solicitation
- NAICS
- 541690
- Posted
- Oct 29, 2026
- ISO 50001 WR-ALC Sole Source
- Deadline
- —
- Agency
- DEPT OF THE AIR FORCE
- Type
- Award Notice
- NAICS
- 541690
- Posted
- Oct 28, 2026
| Title | Agency | Type | NAICS | Posted | Deadline |
|---|---|---|---|---|---|
| Antiterrorism Support Services | DEPT OF THE ARMY | Sources Sought | 541690 | Nov 10, 2026 | Nov 17, 2026(5d) |
| R--Technical Services Support | ENERGY, DEPARTMENT OF | Solicitation | 541690 | Nov 10, 2026 | Nov 20, 2026(8d) |
| VA Magnetic Resonance Safety Expert Services | VETERANS AFFAIRS, DEPARTMENT OF | Solicitation | 541690 | Nov 9, 2026 | Sep 21, 2026 |
| Natural Resource Investigations in the Upper Mississippi River Basin, Mississippi Valley Division (MVD) | DEPT OF THE ARMY | Sources Sought | 541690 | Nov 9, 2026 | Dec 4, 2026(22d) |
| H365--Diagnostic Medical Physics for the VA Central California Health Care System | VETERANS AFFAIRS, DEPARTMENT OF | Sources Sought | 541690 | Nov 6, 2026 | Nov 13, 2026(1d) |
| 2 Senior Advisors Services for the NINDS Blueprint Neurotherapeutic Network for Small Molecules External Oversight Committee (EOC) Subject Matter Expert (SME) Services | OFFICE OF THE ASSISTANT SECRETARY FOR FINANCIAL RESOURCES (ASFR) | Combined Synopsis/Solicitation | 541690 | Nov 5, 2026 | Nov 9, 2026 |
| Respirator Fit Testing | VETERANS AFFAIRS, DEPARTMENT OF | Combined Synopsis/Solicitation | 541690 | Nov 4, 2026 | Nov 5, 2026 |
| Clinical Research Support and Collaboration for NHGRI Protocols | NATIONAL INSTITUTES OF HEALTH | Combined Synopsis/Solicitation | 541690 | Nov 3, 2026 | Nov 13, 2026(1d) |
| B--INJECTION WELL FAILURE MODE EVALUATION | DEPARTMENTAL OFFICES | Solicitation | 541690 | Nov 3, 2026 | Nov 13, 2026(1d) |
| AFCENT Battle Lab Commercial Solutions Opening | DEPT OF THE AIR FORCE | Special Notice | 541690 | Nov 3, 2026 | — |
| F-35 Joint Strike Fighter Joint Program Office Security Services | DEPT OF THE NAVY | Special Notice | 541690 | Nov 3, 2026 | Nov 4, 2026 |
| 6635--Dosimetry and Exposure Monitoring Services - VISN 1 BPA | VETERANS AFFAIRS, DEPARTMENT OF | Special Notice | 541690 | Nov 2, 2026 | Nov 9, 2026 |
| Senior Advisor Subject Matter Expert (SME) with Pharmaceutical Development and Pain Expertise for the NINDS | OFFICE OF THE ASSISTANT SECRETARY FOR ADMINISTRATION (ASA) | Combined Synopsis/Solicitation | 541690 | Oct 30, 2026 | Nov 2, 2026 |
| Senior Advisor 2 for Biological Therapeutics Development to act as External Oversight Committee (EOC) Subject Matter Expert (SME) Services. | OFFICE OF THE ASSISTANT SECRETARY FOR FINANCIAL RESOURCES (ASFR) | Combined Synopsis/Solicitation | 541690 | Oct 29, 2026 | Nov 5, 2026 |
| ISO 50001 WR-ALC Sole Source | DEPT OF THE AIR FORCE | Award Notice | 541690 | Oct 28, 2026 | — |
Largest contracts ending within 18 months
- FA564125F0011 ↗$76.7M
REQUIREMENTS FOR THE EARLY WARNING CAPABILITY (EWC) AND COMMAND AND CONTROL (C2) TASK ORDER (TO) UNDER THE AIR BASE AIR DEFENSE (ABAD) INDEFINITE DELIVERY/INDEFINITE QUANTITY (ID/IQ) CONTRACT.
- Ends
- Mar 30, 2027
- Started
- Mar 31, 2025
- Agency
- Department Of The Air Force
- NAICS
- 541690
- HR001122C0073 ↗$65.7M
PROGRAM SECURITY SERVICES
- Ends
- Mar 19, 2027
- Started
- Mar 20, 2022
- Agency
- Defense Advanced Research Projects Agency
- NAICS
- 541690
- 19AQMM22F3663 ↗$60.2M
MODIFICATION 18: THE PURPOSE OF MODIFICATION P018 IS TO DEOBLIGATE FUNDS FROM BASE YEAR IN THE AMOUNT OF $30,000.000. DIPLOMATIC SECURITY GLOBAL CANINE SERVICES CENTER WORLDWIDE PROTECTIVE SERVICES BUREAU OF DIPLOMATIC SECURITY US DEPARTMENT OF STAT
- Ends
- Mar 28, 2027
- Started
- Mar 29, 2023
- Agency
- Department Of State
- NAICS
- 541690
- HQ085822C0007 ↗$41.6M
DEI LABOR
- Ends
- Aug 24, 2027
- Started
- Aug 25, 2022
- Agency
- Missile Defense Agency
- NAICS
- 541690
- 89303026CEA000006 ↗$37.4M
THE CONTRACTOR SHALL PROVIDE TECHNICAL AND ADMINISTRATIVE SUPPORT TO THE OFFICE OF ENTERPRISE ASSESSMENT IN SUPPORT OF ITS MISSION TO PROVIDE THE SECRETARY OF ENERGY AND SENIOR DEPARTMENT OF ENERGY MANAGERS WITH AN INDEPENDENT ASSESSMENT OF THE EFFEC
- Ends
- Feb 27, 2027
- Started
- Feb 28, 2026
- Agency
- Department Of Energy
- NAICS
- 541690
- FA702225F0015 ↗$21.4M
THIS TASK ORDER IS FOR MANAGEMENT, ENGINEERING AND RESEARCH CONCEPTS GEOPHYSICAL EXPANDED ACQUISITION FOLLOW-ON WHICH PROVIDES NON-PERSONAL ADVISORY AND ASSISTANCE SERVICES FOR THE AIR FORCE TECHNICAL APPLICATIONS CENTER.
- Ends
- Nov 29, 2026
- Started
- Dec 31, 2024
- Agency
- Department Of The Air Force
- NAICS
- 541690
- 75FCMC24F0042 ↗$18.7M
MIDS DEVELOPMENT, REEVALUATION AND IMPLEMENTATION OF OUTCOME/EFFICIENCY MEASURES FOR HOSPITAL AND ELIGIBLE CLINICIANS
- Ends
- Jan 22, 2027
- Started
- Mar 23, 2024
- Agency
- Centers For Medicare And Medicaid Services
- NAICS
- 541690
- HDTRA122C0026 ↗$18.2M
SECURITY SUPPORT SERVICES
- Ends
- Feb 27, 2027
- Started
- Feb 28, 2022
- Agency
- Defense Threat Reduction Agency
- NAICS
- 541690
- 75D30126C21193 ↗$18.1M
EBOLA ENTRY SCREENING SERVICES EO 14398
- Ends
- Jan 4, 2027
- Started
- Jul 5, 2026
- Agency
- Centers For Disease Control And Prevention
- NAICS
- 541690
- 75Q80123F32002 ↗$16.7M
HEALTHCARE COST AND UTILIZATION PROJECT (HCUP) CLIN 0002 COR CHANGE
- Ends
- Feb 19, 2027
- Started
- Feb 20, 2023
- Agency
- Office Of The Assistant Secretary For Financial Resources
- NAICS
- 541690
| PIID | Contractor | Description | Agency | NAICS | Obligated | Start | End |
|---|---|---|---|---|---|---|---|
| FA564125F0011 ↗ | Parsons Government Services INC. | REQUIREMENTS FOR THE EARLY WARNING CAPABILITY (EWC) AND COMMAND AND CONTROL (C2) TASK ORDER (TO) UNDER THE AIR BASE AIR DEFENSE (ABAD) INDEFINITE DELIVERY/INDEFINITE QUANTITY (ID/IQ) CONTRACT. | Department Of The Air Force | 541690 | $76.7M | Mar 31, 2025 | Mar 30, 2027 |
| HR001122C0073 ↗ | System High Corporation | PROGRAM SECURITY SERVICES | Defense Advanced Research Projects Agency | 541690 | $65.7M | Mar 20, 2022 | Mar 19, 2027 |
| 19AQMM22F3663 ↗ | Michael Stapleton Associates, Ltd. | MODIFICATION 18: THE PURPOSE OF MODIFICATION P018 IS TO DEOBLIGATE FUNDS FROM BASE YEAR IN THE AMOUNT OF $30,000.000. DIPLOMATIC SECURITY GLOBAL CANINE SERVICES CENTER WORLDWIDE PROTECTIVE SERVICES BUREAU OF DIPLOMATIC SECURITY US DEPARTMENT OF STAT | Department Of State | 541690 | $60.2M | Mar 29, 2023 | Mar 28, 2027 |
| HQ085822C0007 ↗ | System High Corporation | DEI LABOR | Missile Defense Agency | 541690 | $41.6M | Aug 25, 2022 | Aug 24, 2027 |
| 89303026CEA000006 ↗ | Unwin Co | THE CONTRACTOR SHALL PROVIDE TECHNICAL AND ADMINISTRATIVE SUPPORT TO THE OFFICE OF ENTERPRISE ASSESSMENT IN SUPPORT OF ITS MISSION TO PROVIDE THE SECRETARY OF ENERGY AND SENIOR DEPARTMENT OF ENERGY MANAGERS WITH AN INDEPENDENT ASSESSMENT OF THE EFFEC | Department Of Energy | 541690 | $37.4M | Feb 28, 2026 | Feb 27, 2027 |
| FA702225F0015 ↗ | Kegman INC. | THIS TASK ORDER IS FOR MANAGEMENT, ENGINEERING AND RESEARCH CONCEPTS GEOPHYSICAL EXPANDED ACQUISITION FOLLOW-ON WHICH PROVIDES NON-PERSONAL ADVISORY AND ASSISTANCE SERVICES FOR THE AIR FORCE TECHNICAL APPLICATIONS CENTER. | Department Of The Air Force | 541690 | $21.4M | Dec 31, 2024 | Nov 29, 2026 |
| 75FCMC24F0042 ↗ | Yale New Haven Health Services Corporation | MIDS DEVELOPMENT, REEVALUATION AND IMPLEMENTATION OF OUTCOME/EFFICIENCY MEASURES FOR HOSPITAL AND ELIGIBLE CLINICIANS | Centers For Medicare And Medicaid Services | 541690 | $18.7M | Mar 23, 2024 | Jan 22, 2027 |
| HDTRA122C0026 ↗ | Akima Data Management LLC | SECURITY SUPPORT SERVICES | Defense Threat Reduction Agency | 541690 | $18.2M | Feb 28, 2022 | Feb 27, 2027 |
| 75D30126C21193 ↗ | Xprestest INC. | EBOLA ENTRY SCREENING SERVICES EO 14398 | Centers For Disease Control And Prevention | 541690 | $18.1M | Jul 5, 2026 | Jan 4, 2027 |
| 75Q80123F32002 ↗ | National Opinion Research Center | HEALTHCARE COST AND UTILIZATION PROJECT (HCUP) CLIN 0002 COR CHANGE | Office Of The Assistant Secretary For Financial Resources | 541690 | $16.7M | Feb 20, 2023 | Feb 19, 2027 |