Full-Stack Software Developer
Sphinx LLC•Springfield, VA
•Hybrid
About The Position
As a Full-Stack Software Developer you will design, develop, and maintain mission-critical applications supporting Sphinx internal development and federal customers. Activities will span front-end interfaces, back-end services, and data layers. This is hands-on development in a mix of corporate and classified environments, building secure and scalable tools that drive real mission outcomes.
Requirements
- Active TS/SCI clearance with a current CI Polygraph (within the last 5 years)
- U.S. Citizenship (required for clearance eligibility)
- 8+ years of software development experience across the full stack
- AI-augmented development experience
- Docker / Kubernetes container orchestration
- DevSecOps and CI/CD pipeline experience
- Secure coding experience (OWASP, NIST 800-53)
Nice To Haves
- Software development on Intelligence Community programs
- Iron Bank / DCAR hardened container experience
- Infrastructure as Code (Terraform, Ansible)
- Zero Trust architecture implementation (NIST 800-207)
- AI/ML integration into software platforms
- CISSP, Certified Kubernetes Security Specialist (CKS), or AWS Solutions Architect
- BS in Computer Science or a related field
Responsibilities
- Design, develop, and maintain full-stack applications in corporate & classified environments
- Build responsive front ends (React, Vite, MUI), back-end services (Node, Express, PostgreSQL), and integrate shared tooling (TypeScript)
- Deploy and manage containerized applications
- Build and maintain DevSecOps and CI/CD pipelines for secure continuous delivery
- Apply secure coding practices aligned to OWASP guidelines and NIST 800-53 controls
- Architect and implement Zero Trust network and application design
- Partner with program security officers, data engineers, and mission stakeholders to translate requirements into working software
Benefits
- 401K with corporate match
- Company paid health insurance
- Company paid vision insurance
- Company paid dental insurance
- Company paid disability insurance
- Other insurance options
- Variety of incentives and opportunities to support the development and well-being of our personnel
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
Associate degree
