Software Engineer (React/Java/Full Stack)

Job Description

Pay: $100,000.00 - $120,000.00 per year

Job description: Software Engineer (React/Java/Full Stack)

Constellation seeks a Software Engineer(Junior) 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 workstreams.

Key Responsibilities:

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.

The ideal candidate must have the following experience, background, and credentials:

2 - 5 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, TypeScript, 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: Hybrid

Benefits:

401(k)

401(k) matching

Dental insurance

Flexible schedule

Flexible spending account

Health insurance

Life insurance

Professional development assistance

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Full-time

Hybrid remote