Front End Developer

MANTECH seeks a motivated, career and customer-oriented Front End Developer to join our team in Annapolis Junction, MD.

Responsibilities include but are not limited to:

• Design and develop web-based user interfaces for operational tools and capability management systems
• Create visualization dashboards that present complex technical data in operator-friendly formats
• Conduct user research with operators to understand workflow pain points and interface requirements
• Build responsive, accessible web applications optimized for operational environment constraints
• Integrate front-end applications with back-end APIs, data pipelines, and capability infrastructure
• Implement real-time data visualization for operational status, system health, and mission telemetry
• Develop interface components that streamline operator workflows during mission execution
• CONUS travel maybe required up to 25%.

Minimum Qualifications:

• Bachelor\'s degree and 4+ years of experience OR High School Diploma/GED and 8+ years of experience OR Associate?s degree and 6+ years of experience OR Master?s Degree and 2+ years, OR a PhD with 0+ years of progressively responsible experience.

• 3+ years professional front-end development experience
• Expert proficiency in HTML5, CSS3, and TypeScript
• Strong experience with modern JavaScript frameworks (React, Vue, Angular, or similar)
• Experience with RESTful API integration and asynchronous data handling Proficiency with data visualization libraries (D3.js, Plotly, Chart.js, or similar)
• Experience with version control (Git) and collaborative development workflows
• Familiarity with build tools and package managers (Webpack, npm, yarn)

Preferred Qualifications:

• Proficiency with Golang for backend integration and tooling development
• Experience building applications for cybersecurity operations or intelligence analysis
• Familiarity with Svelte framework and real-time data visualization and WebSocket implementations
• Experience with component libraries and design systems (Material-UI, Ant Design)
• Bachelor\'s degree in Computer Science, Human-Computer Interaction, Design, or related field (or equivalent experience)

Clearance Requirements:

• An active TS/SCI with Polygraph is required.

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time.
• Needs to occasionally move about inside the office to access file cabinets and office machinery.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
• Must be able to exchange accurate information in these situations.