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# Senior Full-Stack Software Engineer

- **Company:** Mission Services LLC
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), .NET Framework, Agile Methodology, Amazon Web Services, Build Automation, Microsoft Azure, Bash Shell, Code Generation, Code Review, CompTIA Security+, Computer Networks, Linux, DevOps, Domain Name System (DNS), Hyper-V, Python (Programming Language), Network Troubleshooting, PostgreSQL, Node.Js, Package Development Process, Windows PowerShell, Systems Development Life Cycle, Software Engineering, TCP/IP, TypeScript, Virtualization Technology, Web Applications, Scripting, Google Cloud, Enterprise Software Applications, Load Balancing, AI Coding Agents, AngularJS, Kubernetes, Information Technology, Oracle Cloud Infrastructure, Docker, Vmware
- **Published:** October 28, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9266974/senior-full-stack-software-engineer

## About the Role

* Active TS/SCI clearance
 * 10+ years of software engineering experience across the full lifecycle (requirements, design, build, test, deploy, support)
 * Bachelor's degree in Computer Science, Information Technology, or related field
 * In-depth experience with modern languages and frameworks: .NET, JavaScript, TypeScript, Angular, Node.js; package development and deployment
 * In-depth understanding of containerization: Docker, Kubernetes, OCI standards, and PostgreSQL databases
 * Experience deploying systems in Linux and/or Windows environments
 * Knowledge of on-premises virtualization (VMware, Hyper-V) and/or cloud platforms (AWS, Azure, Google Cloud)
 * Understanding of networking concepts (TCP/IP, DNS, load balancing)
 * Scripting in Python, Bash and/or PowerShell, including automating CI/CD pipelines
 * Significant hands-on experience using AI coding models/assistants in the software development lifecycle
Preferred qualifications

 * Experience in Agile/DevOps environments
 * Active AWS DevOps and/or CompTIA Security+ certification
 * Experience in classified or air-gapped development environments

## Description

Lead developer for an enterprise application development and modernization effort supporting a high-visibility executive-branch client in Washington, DC. You will design, build, containerize and deploy modern web applications end to end, using AI-assisted development to accelerate the full software lifecycle.
What you'll do

 * Design, develop, test and maintain full-stack web applications using .NET, JavaScript/TypeScript, Angular and Node.js
 * Build and maintain PostgreSQL data models, queries and migrations
 * Package applications as OCI-compliant container images and deploy to Kubernetes running on on-premises virtualization (VMware/Hyper-V)
 * Automate build, test and release steps in CI/CD pipelines using Python, Bash and PowerShell
 * Deploy and troubleshoot applications in Linux and Windows environments, including networking issues (TCP/IP, DNS, load balancing)
 * Use approved AI coding assistants across the SDLC (design, code generation, test creation, documentation) with appropriate review and security controls
 * Provide technical leadership, code reviews and mentoring; influence architecture and engineering practices
 * Work in an Agile/DevOps team and communicate status and risks to Government stakeholders