Software Engineer; React​/Java​/Full Stack

Pay: $ - $ per year

Software Engineer (React/Java/Full Stack)

Constellation seeks a Software Engineer to join our Homeland Security Team in Washington, DC. This role is designed for a developer who is comfortable across the stack, specifically building modern user interfaces in React and supporting robust backend services in Java/Spring Boot (or similar frameworks). You will work on mission‑critical applications that integrate data collection, operational reporting, and intelligent automation to support national security objectives.

This position involves close collaboration with analysts, engineers, and stakeholders to deliver mission‑driven capabilities across multiple work streams.

• Full‑Stack Development:
  Build and maintain responsive web applications using React, integrating them with backend services and APIs
• System Integration:
  Support the development of backend logic and data services using Java/Spring or equivalent frameworks
• User‑Centric Design:
  Collaborate with analysts and stakeholders to translate complex data requirements into intuitive, high‑performance user interfaces
• Agile
  
  Collaboration:
  
  Participate in sprint planning, code reviews, and technical design sessions within a tight‑knit engineering team
• Quality Assurance:
  Write unit tests and participate in CI/CD workflows to ensure the reliability of production code

• At least 3 years of professional experience in software development, with a proven ability to work in frontend frameworks like React and backend ecosystems such as Java/Spring, C#/.NET, or similar enterprise‑grade languages
• Strong experience developing front‑end applications using HTML, Type Script, and CSS with a focus on responsive design and modern UI/UX
• Strong understanding of RESTful APIs, React component design and common component libraries, and secure web development practices
• Proficiency in writing unit tests using frameworks such as Jest
• Experience working in a collaborative code environment and familiarity with Git, CI/CD pipelines, and modern development workflows
• Bachelor’s degree in Computer Science, Software Engineering, or a related field
• Be a U.S. citizen able to pass a background investigation by the client agency. DHS clearance with CBP/ICE or DoD Top‑Secret preferred

Job Type: Full‑time

Education: Bachelor's (Required)

Experience: React: 2 years (Required);
Front‑end development: 2 years (Required)

Work Location: Remote

• 401(k)
• 401(k) matching
• Dental insurance
• Flexible schedule
• Flexible spending account
• Health insurance
• Life insurance
• Professional development assistance