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.