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# Sr. Front End Developer II

- **Company:** MetroStar Systems
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** ASP.NET, HTML, JavaScript (Programming Language), .NET Framework, Amazon Web Services, Microsoft Azure, C Sharp (Programming Language), Database Development, Github, Design of User Interfaces, Microsoft SQL Server, Model View Controller (MVC), Node.Js, Software Architecture, Software Engineering, Transact-SQL, TypeScript, Web Applications, Enterprise Software Applications, Modern Ui, ReactJS, Backend, Gitlab, AngularJS, Information Technology, Webforms, Front End Software Development, Restful APIs, Software Version Control, Docker
- **Published:** October 2, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8855356/sr-front-end-developer-ii

## About the Role

Active Top Secret with current or previously held SCI access.
Bachelor's degree in Computer Science or Software Engineering preferred; relevant experience may substitute.
Certification meeting DoD 8140 requirements (e.g., Security+ or higher).
Certification of Azure Developer Associate, AWS Developer Associate, or recent/relevant software development certification.
8+ years of professional software development experience building, testing, and maintaining enterprise applications in mission-critical environments.
Expertise with modern front-end development (e.g., TypeScript, JavaScript, HTML, CS, Node.js, Angular and/or React).
Strong understanding of modern UI/UX web design principles for performance and responsiveness.
Familiar with C#, .NET, .NET Framework, ASP.NET (e.g., WebForms, MVC, REST APIs).
Familiar with back-end database development and administration (e.g., SQL Server and T-SQL).
Familiar with source code management tools (e.g., Azure DevOps, GitLab, or GitHub), CI/CD pipelines, and containerization using Docker.
Ability to contribute immediately with minimal ramp-up in a dynamic, mission-critical environment.

## Description

As a Sr. Front End Developer II, you'll lead UI/UX modernization efforts and deliver secure, high-performance front-end and enterprise web applications with the goal to make an impact across the federal government. Our mission application development team is responsible for building and sustaining mission-critical systems in a no-fail federal environment, and you'll contribute to secure full-stack development while driving modern, scalable user experiences that enhance system performance, usability, and operational effectiveness., Lead design and implementation of modern, responsive, high-performance user interfaces using Angular and/or React.
Translate mission and operational requirements into intuitive, accessible UI/UX solutions.
Modernize legacy web applications to current front-end frameworks.
Troubleshoot and remediate production issues in a mission-critical environment.
Collaborate with security, infrastructure, and platform engineering teams.
Contribute to architectural decisions impacting performance, scalability, and maintainability.