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# Front End Developer

- **Company:** Mantech International Corporation
- **Location:** Annapolis Junction, MD, United States
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), HTML5, Cascading Style Sheets (CSS), D3.Js, Data Visualization, Human-Computer Interaction, Intelligence Analysis, Package Management Systems, Svelte, Technical Data Management Systems, TypeScript, Web Applications, Web Application Frameworks, WebSocket, Highcharts, Data Processing, Apache Yarn, ReactJS, Software Application Programming, Git, Vue.js, Webpack, AngularJS, Material UI, Information Technology, Real Time Data, Plotly, Build Tools, Npm(Software), Front End Software Development, Restful APIs, Software Version Control, Data Pipelines, Golang
- **Published:** October 18, 2026
- **Apply:** https://www.careerboard.com/us/en/find-jobs-in-United-States/-7EB1BAB7BA62E36C69/

## About the Role

* 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 Back End 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.

## Description

* 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%.