SSE
IT Services and IT ConsultingMissouri, United States501-1000 Employees
SSE is an information technology services and consulting firm that provides IT systems support, cybersecurity compliance, and training and data-management services, with a focus on contracts with the Department of Defense. It operates as a Women-Owned Small Business based in St. Louis, Missouri, and serves clients across all 50 states. The organization has ISO 9001:2015 certification and was established in 1966 by Susan S. Elliott, reflecting a long-standing commitment to structured processes and quality management. The company targets small and mid-sized organizations needing regulated IT capabilities and data security controls, helping them address standards such as NIST 800-171 and, looking ahead, CMMC requirements. As a DoD contractor, SSE maintains its own networks in line with evolving regulatory expectations and extends that disciplined approach to its clients’ systems. In November 2024, SSE completed a Joint Surveillance Assessment with a C3PAO and DIBCAC and achieved a perfect score on its CMMC Level 2 certification, illustrating its demonstrated compliance maturity.
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