Senior Full Stack/UI Developer

SOSi1

Chantilly, VA, United States permanent

Posted: February 17, 2026

Required Skills

Job Description

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.

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.

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