Front End Developer

Front End Developer

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

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.

The projected compensation range for this position is $91,600.00-$153,800.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at and provide your name and contact information.