Senior Full Stack/UI Developer
SOSi · Chantilly, VA, United States · Posted Jun 30, 2026
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SOSi is seeking skilled Senior Full Stack/UI Developer to support a US government customer in Chantilly, VA.
This role will be responsible for designing, developing, and maintaining cyber analytic applications. This role involves collaborating with cyber SMEs, data scientists, and engineers to translate complex technical requirements into responsive user interfaces and robust backend services.
Minimum Requirements
Active in-scope TS/SCI clearance with poly. This security clearance requires U.S. citizenship. Candidates will not be nominated for new clearances.
3–5 years of hands-on experience in full-stack and UI development, or equivalent practical experience, with a STEM degree (field such as computer science, statistics, data analytics, computer engineering, mathematics, etc.).
Experience building scalable and robust backend systems.
Experience building user interfaces
Familiarity with AI/ML applications
Solid understanding of DevOps principles (automation, monitoring, reliability)
Preferred Qualifications
Experience in the US Intelligence Community.
Work Environment
Office setting with a combination of desk work and meetings.
Working at SOSi
All interested individuals will receive consideration and will not be discriminated against for any reason.
Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.