Client/Server Software Solutions Inc
Client/Server Software Solutions Inc received $15.8M in federal prime contract obligations in the 12 months ending Oct 5, 2026, up 9.8% from $14.4M the year before, and $73.1M since FY2022. Its largest customer is the Department of Defense.
See 6 contracts ending in the next 18 months ↓Contractor details
- Unique Entity ID (UEI)
- CMSHG28J2L78
- CAGE code
- 1HYP0
- Doing business as
- Constellation West
- Headquarters
- Vienna, VA
- Business size
- Small Business
- Socioeconomic status
- SDVOSB, Veteran-owned, WOSB
As recorded on this UEI's most recent prime contract action in USAspending.gov. Confirm current registration and certifications in SAM.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year.
Top agencies
Funding agencies ranked by obligations since FY2022.
| Funding agency | Latest 12 mo | Since FY2022 |
|---|---|---|
| Department of Defense | $13.0M | $58.2M |
| Department of the Treasury | $2.8M | $15.0M |
Top NAICS codes
Industry codes agencies recorded on this contractor's awards, since FY2022.
What it sells
Product and service codes (PSC) on this contractor's awards, since FY2022.
| PSC | Description | Since FY2022 |
|---|---|---|
| R425 | Support- professional: Engineering/Technical | $54.7M |
| R408 | Support- professional: Program Management/Support | $8.2M |
| DA01 | IT and Telecom - Business Application/Application Development Support Services (Labor) | $7.8M |
| R410 | Support- professional: Program Evaluation/Review/Development | $1.9M |
| DJ10 | IT and Telecom - Security and Compliance AS a Service | $569K |
Contracts ending in the next 18 months
This contractor's largest awards whose current period of performance ends soon. Options and extensions often move these dates.
| Award | Agency | Obligated | Current end |
|---|---|---|---|
| 2032H522F00081 | Department of the Treasury AUTOMATED COLLECTIONS SYSTEM (ACS) | $6.2M | Nov 27, 2026 |
| FA460022F0012 | Department of Defense (FOPR) #22-002, GLOBAL NUCLEAR COMMAND CONTROL SUPPORT AND COMMUNICATION (NC3) ENTERPRISE CENTER | $2.7M | Jan 31, 2027 |
| FA460022F0043 | Department of Defense PROJECT 16.2 DETERRENCE ANALYSIS & PLANNING SUPPORT (DAPS) | $8.2M | Apr 14, 2027 |
| FA460022F0042 | Department of Defense SPECIAL ACCESS PROGRAM (SAP) SECURITY AND SUPPORT FOR USSTRATCOM/J39 | $4.5M | Apr 22, 2027 |
| FA460022F0031 | Department of Defense J81 CAMPAIGN MODELING AND EMERGING TECHNOLOGY SUPPORT. THE CONTRACTOR SHALL PROVIDE A&AS SUPPORT FOR J81 TO FULFILL ITS MISSION TO DEVELOP &EXECUTE AN INTEGRATED STRATEGIC DESIGN… | $3.6M | May 31, 2027 |
| FA460023F0006 | Department of Defense USAMS FOPR 23-003 NUCLEAR COMMAND, CONTROL, AND COMMUNICATION (NC3) ENTERPRISE CENTER MISSION SUPPORT | $32.0M | Nov 30, 2027 |
Recent awards
This contractor's newest prime contract awards, most recent first.
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| 205AE926F00109 | Department of the Treasury API COMMON SERVICES- INFORMATION TECHNOLOGY SERVICES TO OPERATE, MAINTAIN, AND MODERNIZE INTERNAL REVENUE SERVICE APPLICATIONS THAT SUPPORT SECURE SYSTEM COMMUNICATION AND DATA… | $1.5M | Sep 17, 2026 |
| FA460025F0002 | Department of Defense FOPR 25-002 NATIONAL AIRBORNE OPERATIONS CENTER (NAOC) J3T SPECIAL ACCESS PROGRAM (SAP) SECURITY AND SUPPORT FOR USSTRATCOM/NAOC | $141K | Dec 19, 2024 |
| FA460023F0147 | Department of Defense MISSILE OPERATIONS SUPPORT FOR USSTRATCOM | $198K | Sep 28, 2023 |
| 2032H523F00734 | Department of the Treasury PROVIDE MICROSOFT 365 (M365) CORE PROGRAM OVERSIGHT AND SUPPORT PROGRAM MANAGEMENT OFFICE ACTIVITIES AT THE ENTERPRISE LEVEL ACROSS THE INTERNAL REVENUE SERVICE (IRS) THAT… | $3.4M | Sep 27, 2023 |
| 2032H523F00365 | Department of the Treasury PATCH AUTOMATION SUPPORT | $488K | Jul 5, 2023 |
| FA489023C0009 | Department of Defense THE PURPOSE OF THIS CONTRACT IS TO PROVIDE PERSONNEL RECOVERY MISSION SOFTWARE AND PERSONNEL RECOVERY MISSION MANAGER (PRMS/PRMM) FUNCTIONAL OPERATORS THAT WILL SUPPORT AND… | $1.6M | Jan 30, 2023 |
| FA460023F0006 | Department of Defense USAMS FOPR 23-003 NUCLEAR COMMAND, CONTROL, AND COMMUNICATION (NC3) ENTERPRISE CENTER MISSION SUPPORT | $2.4M | Nov 30, 2022 |
| FA460022F0062 | Department of Defense NUCLEAR PLANNING AND EXECUTION SYSTEM (NPES) OPERATIONS, TECHNICAL ADVICE, OPERATIONS SUPPORT, AND OPERATIONAL PLAN (OPLAN) AND NUCLEAR COMMAND, CONTROL, AND COMMUNICATIONS (NC3)… | $297K | Jun 22, 2022 |
Prime contracts (award types A–D) from USAspending.gov through Oct 5, 2026. Subcontracts are not included. Net obligations include deobligations and corrections.
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