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# Full-Stack Software Developer

- **Company:** Sphinx LLC
- **Location:** Springfield, VA, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Kubernetes Security, Artificial Intelligence, Amazon Web Services, Computing Platforms, Continuous Delivery, Continuous Integration, PostgreSQL, Node.Js, Open Web Application Security, Ansible, Zero Trust Network Access, Secure Coding, Software Engineering, TypeScript, ReactJS, Data Layers, Containerization, Webpack, Sphinx, Information Technology, Machine Learning Operations, Terraform, Devsecops, Docker
- **Published:** September 25, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9191533/full-stack-software-developer

## About the Role

* 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), * 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

## Description

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.

WHAT YOU'LL DO

 * 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