Headquartered in Leesburg, Virginia, Custom Software Systems, Inc. (CSS) is a certified HUBZone and Woman Owned Small Business (WOSB). Built on a foundation of trusted client partnerships, CSS has fostered a “stakeholder-centric”, yet disciplined approach to IT solutions development.


  • Values

    CSS was founded on a set of guiding principles that include good old fashioned hard work, ethics, teamwork, and innovation. We establish relationships with our customers that are based on direct and honest communication and perseverance to get the job done which in turn fosters respect and trust.

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  • Differentiators


    CSS is committed to serving our clients while providing a challenging and meaningful workplace for our associates. We search associates that possess a passion for good old fashioned hard work, that appreciate what it takes to provide excellent service to our customers and partners, and that have the ability to communicate and work effectively


    CSS specializes in developing and implementing Information Technology Solutions and Support Services which deliver high value to our customers. Our skilled team of professionals assists our customers/partners by integrating technology that best fits their business needs.