Client/Server Software Solutions Inc
Client/Server Software Solutions Inc (doing business as Constellation West) is a small business in Vienna, VA registered on SAM.gov to bid on federal contracts. It has won about $44.9 million in federal prime contracts since fiscal year 2024, according to USAspending.gov.
- UEI
- CMSHG28J2L78
- CAGE code
- 1HYP0
- SAM.gov registration
- Active
Registration details
| Legal business name | Client/Server Software Solutions Inc |
|---|---|
| Doing business as | Constellation West |
| Unique Entity ID (UEI) | CMSHG28J2L78 |
| CAGE code | 1HYP0 |
| Location | Vienna, VA |
| SAM.gov registration | Active through May 11, 2027 |
| Business started | 1997 |
| Primary NAICS code | 541330: Engineering Services |
| Website | www.constellationwest.com |
Certifications and business types
- SBA-certified women-owned small business
- Service-disabled veteran-owned (self-reported in SAM.gov)
- Veteran-owned (self-reported in SAM.gov)
- Women-owned (self-reported in SAM.gov)
- Women-owned small 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 | $18.5 million |
| FY2024 | $14.8 million |
| FY2025 | $14.4 million |
| FY2026 | $15.8 million |
Its biggest federal customers over the last four fiscal years: Department of the Air Force ($51.2 million) and Internal Revenue Service ($12.2 million).
Recent contract awards
| Awarded | Agency | What it's for | Amount |
|---|---|---|---|
| Sep 17, 2026 | Internal Revenue Service | Api common services- information technology services to operate, maintain, and… | $1.5 million |
| Dec 19, 2024 | Department of the Air Force | Fopr 25-002 national airborne operations center (naoc) j3t special access program (sap)… | $441,064 |
| Sep 28, 2023 | Department of the Air Force | Missile operations support for usstratcom | $1 million |
| Sep 27, 2023 | Internal Revenue Service | Provide microsoft 365 (m365) core program oversight and support program management… | $3.4 million |
| Jul 5, 2023 | Internal Revenue Service | Patch automation support | $989,643 |
| Jan 30, 2023 | Department of the Air Force | The purpose of this contract is to provide personnel recovery mission software and… | $1.6 million |
Figures are prime contract obligations reported to USAspending.gov. Work done as a subcontractor isn't included.
NAICS codes Client/Server Software Solutions Inc is small under
On its SAM.gov registration, Client/Server Software Solutions Inc meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
- 541330 Engineering Services
- 336611 Ship Building and Repairing
- 488190 Other Support Activities for Air Transportation
- 488999 All Other Support Activities for Transportation
- 541360 Geophysical Surveying and Mapping 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
- 541612 Human Resources Consulting Services
- 541614 Process, Physical Distribution, and Logistics Consulting Services
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 561499 All Other Business Support Services
- 611512 Flight Training
Open contracts in Client/Server Software Solutions Inc's NAICS codes
685 open federal opportunities on SAM.gov use a NAICS code Client/Server Software Solutions Inc is small under. These are due soonest.
- USS MUSTIN (DDG-89) SRA 7C1 BUNDLE 2
✦ The U.S. Navy (NAVSUP Fleet Logistics Center Yokosuka) plans to issue a solicitation for repair and maintenance of the destroyer USS MUSTIN (DDG-89) at Yokosuka Naval Base, Japan.
Due in 2 daysOct 12, 2026
- Optimized Storage and Replenishment Solution
Due in 2 daysOct 12, 2026
- Army Continuing Medical Education (CME) Reaccreditation
Due in 2 daysOct 12, 2026
- Notice Regarding Dept. of the Interior, IBC, AQD to close contracts.
Due in 2 daysOct 12, 2026
- SB Set-Aside under Seaport – Battle Watch Support Services for CNIC
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 Virginia:
- Mayvin, Inc., Alexandria, VA
- Strategic Alliance Solutions LLC, Fairfax, VA
- STS International, Incorporated, Arlington, VA
- Network Designs, Inc., MC Lean, VA
- KMS Solutions, LLC, Alexandria, VA
- The Mchenry Management Group, LLC, Chesapeake, VA
Frequently asked questions
What is Client/Server Software Solutions Inc's CAGE code?
Client/Server Software Solutions Inc's CAGE code is 1HYP0. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is Client/Server Software Solutions Inc's UEI?
Client/Server Software Solutions Inc's Unique Entity ID (UEI) is CMSHG28J2L78. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is Client/Server Software Solutions Inc's SAM.gov registration active?
Yes, as of the latest SAM.gov public data, Client/Server Software Solutions Inc's registration is active through may 11, 2027. Registrations are renewed every year.
Is Client/Server Software Solutions Inc a small business?
Client/Server Software Solutions Inc is registered on SAM.gov as small under 15 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.