STS Systems Defense LLC
STS Systems Defense LLC is a small business in San Antonio, TX registered on SAM.gov to bid on federal contracts. It has won about $102.3 million in federal prime contracts since fiscal year 2024, according to USAspending.gov.
- UEI
- E851ND24QMX9
- CAGE code
- 88KS3
- SAM.gov registration
- Active
Registration details
| Legal business name | STS Systems Defense LLC |
|---|---|
| Unique Entity ID (UEI) | E851ND24QMX9 |
| CAGE code | 88KS3 |
| Location | San Antonio, TX |
| SAM.gov registration | Active through Sep 4, 2027 |
| Business started | 2019 |
| Primary NAICS code | 541330: Engineering Services |
Certifications and business types
- Minority-owned (self-reported in SAM.gov)
- Small disadvantaged business (self-reported in SAM.gov)
SBA certifications let a business compete for set-aside contracts. See set-aside contracts explained.
Federal contract history
| Fiscal year | Prime contract obligations |
|---|---|
| FY2023 | $2.5 million |
| FY2024 | $15.7 million |
| FY2025 | $79.4 million |
| FY2026 | $7.2 million |
Its biggest federal customers over the last four fiscal years: Department of the Air Force ($98.8 million), Department of the Navy ($5.7 million) and Department of the Army ($358,102).
Recent contract awards
| Awarded | Agency | What it's for | Amount |
|---|---|---|---|
| May 29, 2026 | Department of the Army | Manpower conversion officer | $123,259 |
| Feb 12, 2026 | Department of the Air Force | Through this contract, the government provides cyber deliverables for software ofps… | $5.2 million |
| Jan 27, 2026 | Department of the Navy | F-16c rednet validation on 87 series | $43,116 |
| Jan 22, 2026 | Department of the Navy | Funding in support of clin 0002 | $74,140 |
| Sep 19, 2025 | Department of the Army | Recruiting and retention resource management services | $234,843 |
| Sep 19, 2025 | Department of the Air Force | Engineering services for turnkey depot industrial plant equipment (dipe) systems, and… | $4.3 million |
Figures are prime contract obligations reported to USAspending.gov. Work done as a subcontractor isn't included.
NAICS codes STS Systems Defense LLC is small under
On its SAM.gov registration, STS Systems Defense LLC meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
- 541330 Engineering Services
- 332311 Prefabricated Metal Building and Component Manufacturing
- 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
- 541690 Other Scientific and Technical Consulting Services
- 541990 All Other Professional, Scientific, and Technical Services
- 561110 Office Administrative Services
- 561210 Facilities Support Services
- 561720 Janitorial Services
- 561990 All Other Support Services
- 611420 Computer Training
- 611630 Language Schools
- 611699 All Other Miscellaneous Schools and Instruction
- 611710 Educational Support Services
- 811210 Electronic and Precision Equipment Repair and Maintenance
- 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
Open contracts in STS Systems Defense LLC's NAICS codes
550 open federal opportunities on SAM.gov use a NAICS code STS Systems Defense LLC is small under. These are due soonest.
- The U.S. Fish and Wildlife Service, Region 2 Heavy Equipment Maintenance and Re
✦ The U.S. Fish and Wildlife Service (Region 2) plans a 10-year multiple-award Blanket Purchase Agreement for heavy equipment maintenance and repair in Arizona, New Mexico,…
Due in 2 daysOct 12, 2026
- John Deere 544E Forklift Repair Services
Due in 2 daysOct 12, 2026
- Optimized Storage and Replenishment Solution
Due in 2 daysOct 12, 2026
- Steris Service Contract | RFQ | 11/01/26-10/31/31
✦ The VA Network Contract Office 5 wants a contractor to do scheduled preventive maintenance on Steris equipment at the VA Perry Point and Baltimore facilities.
Due in 2 daysOct 12, 2026
- Riverain ClearRead Software in support of the VISN 23 VA Healthcare System.
✦ The VA's Network Contract Office 23 plans to award a sole source firm fixed price contract, under the Federal Supply Schedules, to Riverain Technologies for ClearRead software…
Due in 2 daysOct 12, 2026
Similar small businesses
Other small businesses with the same primary NAICS code (541330) that have won federal contracts, starting with Texas:
- Stracon Services Group, LLC, Benbrook, TX
- STS Systems Support, LLC, San Antonio, TX
- Man-Machine Systems Assessment (Msa), Incorporated, El Paso, TX
- Health Facility Solutions Company, San Antonio, TX
- Inflowlogistics, LLC, San Antonio, TX
- X Technologies, Inc., San Antonio, TX
Frequently asked questions
What is STS Systems Defense LLC's CAGE code?
STS Systems Defense LLC's CAGE code is 88KS3. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is STS Systems Defense LLC's UEI?
STS Systems Defense LLC's Unique Entity ID (UEI) is E851ND24QMX9. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is STS Systems Defense LLC's SAM.gov registration active?
Yes, as of the latest SAM.gov public data, STS Systems Defense LLC's registration is active through sep 4, 2027. Registrations are renewed every year.
Is STS Systems Defense LLC a small business?
STS Systems Defense LLC is registered on SAM.gov as small under 21 NAICS codes, including its primary code, 541330. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
- Check a SAM.gov registration's status
- How to become a government subcontractor
Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To ask us to remove this page, email hello@fedready.us.