Active
Small Business
Overview
- Legal name
- CSSI, LLC
- Also known as
- CSSI INC
- Registered location
- WASHINGTON, DC, USA
- Website
- Company website ↗
- Primary NAICS
- 541330 — Engineering Services
- Latest award activity
- Sep 8, 2026
Read company summary
CSSI, LLC is associated with UEI MU5BJR4UM2V3 and CAGE 0YUD7 in public federal records. AcornBids currently links 16 prime awards totaling $135.0M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Transportation. Its recorded federal awards include work classified as Engineering Services; Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541330 (Engineering Services). Its public SAM.gov registration lists WASHINGTON, DC, USA.
At a glance
Lifetime prime obligations$135.0M
Prime awards16
Awards with future end dates8
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- CSSI, LLC
- Doing business as
- CSSI INC
- UEI
- MU5BJR4UM2V3
- CAGE
- 0YUD7
- Registered address
- 395 E ST SW, WASHINGTON, DC, 20024, USA
- Registration status
- Active
- Primary NAICS
- 541330 — Engineering Services
- SAM activation
- Aug 22, 2025
- Initial registration
- Mar 12, 2002
- Entity start
- Oct 4, 1990
- SAM updated
- Aug 22, 2025
- Registration expires
- Aug 20, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- VA, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 693KA922F00197EFAST PA 22-058-NW SYSTEM CAPACITY AND EVALUATION SUPPORT TASK | Department of Transportation | $2.0M | Sep 21, 2022 | Apr 6, 2027 |
| 693KA825C00017VOLUNTARY SAFETY REPORTING PROGRAM SUPPORT SERVICES | Department of Transportation | $7.2M | Jun 18, 2025 | Jun 21, 2027 |
| 693KA922F00134EFAST PA 22-004-CS SAFETY SERVICES SUPPORT (S3) | Department of Transportation | $48.3M | Jun 22, 2022 | Jun 23, 2027 |
| 693KA923F00093NEW TASK ORDER FOR ATO MISSION SUPPORT SERVICES FOR POLICY AJV-P AND ATO INTERNATIONAL AJV-I | Department of Transportation | $12.7M | May 15, 2023 | May 17, 2028 |
| N0017819D7445SEAPORT-NXG | Department of Defense | $500 | Jan 2, 2019 | Not available |
| 692M1525F00057SEPARATION STANDARDS ANALYSIS SUPPORT | Department of Transportation | $1.3M | Mar 17, 2025 | Mar 20, 2027 |
| 692M1525D00004ENGINEERING SERVICES | Department of Transportation | $6.8M | Mar 17, 2025 | Not available |
| N6523623F0005VIDS | Department of Defense | $20.6M | Nov 10, 2022 | Oct 28, 2027 |
| N6523622F0115NVS/ASUP PROGRAM SUPPORT, INTEGRATION, AND ON-SITE INSTALLATION | Department of Defense | $15.6M | Feb 24, 2022 | Mar 28, 2027 |
| N6523621D4801ATC ENGINEERING AND TECHNICAL SUPPORT | Department of Defense | $400.0M | May 28, 2021 | Not available |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Aug 22, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Mar 12, 2002 |
| Entity start | Oct 4, 1990 |
Registration classifications: Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 334519 — Other Measuring and Controlling Device Manufacturing | Not reported |
| 488111 — Air Traffic Control | Not reported |
| 488119 — Other Airport Operations | Not reported |
| 488190 — Other Support Activities for Air Transportation | Not reported |
| 518210 — Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | Not reported |
| 541330 — Engineering Services | Not reported |
| 541511 — Custom Computer Programming Services | Not reported |
| 541512 — Computer Systems Design Services | Not reported |
| 541513 — Computer Facilities Management Services | Not reported |
| 541519 — Other Computer Related Services | Not reported |
| 541611 — Administrative Management and General Management Consulting Services | Not reported |
| 541614 — Process, Physical Distribution, and Logistics Consulting Services | Not reported |
| 541618 — Other Management Consulting Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541690 — Other Scientific and Technical Consulting Services | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| 561499 — All Other Business Support Services | Not reported |
| 561990 — All Other Support Services | Not reported |
| 611430 — Professional and Management Development Training | Not reported |
| 611512 — Flight Training | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| ANTHONY L LINDSAY | Government business | Contact method not published | SAM registration | Not available |
| FLORIDA HENDRICKS | Alternate government business | Contact method not published | SAM registration | Not available |
| ANTHONY L LINDSAY | Electronic business | Contact method not published | SAM registration | Not available |
| FLORIDA HENDRICKS | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 334519 — Other Measuring and Controlling Device Manufacturing
- 488111 — Air Traffic Control
- 488119 — Other Airport Operations
- 488190 — Other Support Activities for Air Transportation
- 518210 — Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
- 541330 — Engineering Services
- 541511 — Custom Computer Programming Services
- 541512 — Computer Systems Design Services
- 541513 — Computer Facilities Management Services
- 541519 — Other Computer Related Services
- 541611 — Administrative Management and General Management Consulting Services
- 541614 — Process, Physical Distribution, and Logistics Consulting Services
- 541618 — Other Management Consulting Services
- 541620 — Environmental Consulting Services
- 541690 — Other Scientific and Technical Consulting Services
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 541990 — All Other Professional, Scientific, and Technical Services
- 561499 — All Other Business Support Services
- 561990 — All Other Support Services
- 611430 — Professional and Management Development Training
- 611512 — Flight Training
Registered products and services
- AJ11 — GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; BASIC RESEARCH
- AJ13 — GENERAL SCIENCE & TECHNOLOGY R&D SVCS; GENERAL SCIENCE & TECHNOLOGY; EXPERIMENTAL DEVELOPMENT
- AS11 — TRANSPORTATION R&D SERVICES; SURFACE TRANSPORTATION, PUBLIC TRANSIT, AND RAIL; BASIC RESEARCH
- AS21 — TRANSPORTATION R&D SERVICES; AEROSPACE RESEARCH; BASIC RESEARCH
- B539 — Aeronautic/Space Studies
- R425 — Engineering and Technical Services
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About CSSI, LLC
What products and services appear in its federal awards?
Recorded award industries: 541330 — Engineering Services; 518210 — Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services; 541712.
Recorded products and services: R499 — Other Professional Services; DH01 — Support services focused on local database instances, including DBAs, DBMS, and operational support. Also supports distributed platform, application and system integration resources enabling cross application development, communications and information sharing. Includes Mainframe database and middleware support.; L059 — Technical Representation Services: Electrical and Electronic Equipment Components.
Examples from recent award records:
- EFAST PA 22-058-NW SYSTEM CAPACITY AND EVALUATION SUPPORT TASK
- VOLUNTARY SAFETY REPORTING PROGRAM SUPPORT SERVICES
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
395 E ST SW, WASHINGTON, District of Columbia 20024, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541330 — Engineering Services.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Transportation; Department of Defense; General Services Administration.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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