Senior Full Stack Developer (Ashburn)

Senior Full Stack Developer

Unissant, Inc. is seeking a Senior Full Stack Developer to join our team in supporting modernization initiatives for our DHS, Custom and Border Protection client with expertise in Java (Spring Boot, JPA, Liquibase), Angular, and databases (RDS, PostgreSQL). The ideal candidate excels in building scalable microservices, containerized deployments, and CI / CD automation using GitOps.

Essential Duties and Responsibilities :

• Design and develop high-quality web applications using Spring Boot, JPA, Liquibase, and Angular as core frameworks.
• Architect, implement, and maintain robust RESTful APIs and microservices supporting business-critical workflows.
• Develop, test, and optimize scalable database solutions using Relational Database Service (RDS) and PostgreSQL.
• Apply OWASP secure coding practices and test-driven development (TDD) principles to deliver high-quality, maintainable code; write automated tests for all new features.
• Leverage Docker to containerize application components, ensuring consistency across development, test, and production environments.
• Automate deployments with CI / CD pipelines integrated via GitOps tools.
• Collaborate closely with cross-functional teams including Product Managers, DevSecOps Engineers, and Business Leads to deliver end-to-end features.
• Participate in code reviews, mentor junior developers, and support knowledge sharing across the team.
• Troubleshoot, debug, and resolve complex defects across the application stack.
• Ensure secure design and compliance with best practices for access control and data protection.
• Support legacy JEE software applications on WebSphere.
• Present the solution at formal and informal design reviews and document the design according to the Government's system lifecycle methodology.

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Unissant, Inc. is a proud Equal Opportunity Employer! (EOE; M / F / Disability / Vets)