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# Full-Stack Software Developer (Contingent)

- **Company:** Sphinx LLC
- **Location:** Springfield, VA, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Kubernetes Security, Java (Programming Language), Artificial Intelligence, Amazon Web Services, Computing Platforms, CompTIA Security+, Continuous Delivery, Continuous Integration, Python (Programming Language), Open Web Application Security, Ansible, Zero Trust Network Access, Secure Coding, Software Engineering, ReactJS, Vue.js, Data Layers, Containerization, AngularJS, Information Technology, Machine Learning Operations, Front End Software Development, Terraform, Devsecops, Docker
- **Published:** July 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=3366e24dc7b696fa

## About the Role

* Active TS/SCI clearance with a current CI Polygraph (within the last 5 years)
 * U.S. Citizenship (required for clearance eligibility)
 * BS in Computer Science or a related field
 * 8+ years of software development experience across the full stack
 * Docker / Kubernetes container orchestration
 * DevSecOps and CI/CD pipeline experience
 * Secure coding experience (OWASP, NIST 800-53)
 * DoD 8140 compliance - CompTIA Security+ or equivalent, * 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

## Description

As a Full-Stack Software Developer you will design, develop, and maintain mission-critical applications supporting a federal counterintelligence customer - spanning front-end interfaces, back-end services, and data layers. This is hands-on engineering in a classified environment, building secure and scalable tools that drive real mission outcomes.
Please note this position is contingent upon contract award. Start Date TBD.
WHAT YOU'LL DO

 * Design, develop, and maintain full-stack applications in a classified environment
 * Build responsive front ends (React, Angular, Vue) and back-end services (Python, Java), and integrate the two
 * 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


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