CUSTOM SOFTWARE SYSTEMS INC
CUSTOM SOFTWARE SYSTEMS INC is a federal contractor, registered under UEI LNYXAGUM6SA7 and CAGE code 55ZF8. It has been awarded $27,514,130 across 47 federal contracts. Primary work spans Custom Computer Programming Services, Computer Systems Design Services, and Other NAICS codes (2 codes, <0.5% each). Top awarding agencies include Department Of The Treasury, Department Of Justice (doj), and Department Of Defense (dod).
Contact Information
Registration and classification details
Registration
UEI Code
LNYXAGUM6SA7CAGE Code
55ZF8Entity Structure
Corporate Entity (Not Tax Exempt)Established
N/ABusiness Classifications
NAICS Codes
Federal Contracting Overview
Award totals, agency breakdown, NAICS distribution, and geographic footprint.
AI Capability Profile
Custom Software Systems Inc. specializes in custom computer programming services tailored to federal mission-critical systems, with a focus on modernizing payment management infrastructure and supporting enterprise procurement platforms. The company delivers secure, scalable software solutions throu...
Custom Software Systems Inc. specializes in custom computer programming services tailored to federal mission-critical systems, with a focus on modernizing payment management infrastructure and supporting enterprise procurement platforms. The company delivers secure, scalable software solutions through full lifecycle development—including requirements analysis, system design, integration, and ongoing maintenance—leveraging modern development practices to ensure reliability and compliance in highly regulated environments. Their technical expertise includes backend system integration, data workflow automation, and user-centric application design for complex financial and administrative platforms, with an emphasis on interoperability and audit readiness. The contractor has demonstrated direct experience supporting the Department of the Treasury and the General Services Administration. For the Treasury, they have provided specialized programming support for payment management systems, indicating deep familiarity with financial transaction processing, disbursement workflows, and federal fiscal controls. Their work with GSA under the Federal Supply Schedule suggests proven capability in delivering compliant, pre-vetted software services that meet federal acquisition standards and streamline procurement for agency users. Their primary focus is on NAICS 541511—custom computer programming services—which in practice means building bespoke applications that solve unique operational challenges within federal systems, particularly in finance and logistics. This positions them as a niche provider of mission-specific software rather than off-the-shelf solutions, serving agencies that require tailored, secure, and maintainable codebases. As a Women-Owned Small Business and Woman-Owned Business certified contractor based in Leesburg, Virginia, Custom Software Systems Inc. brings a commitment to diversity and small business innovation to the federal IT marketplace. Their 2L entity structure reflects a lean, agile operational model optimized for responsive, high-quality contract execution within government procurement frameworks.
Key Performance Metrics
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