Top Senior Java Developer Jobs in Washington, DC

Design, develop, test, and maintain scalable Java applications for government and enterprise systems. Build and integrate APIs, contribute to architecture and documentation, ensure performance and security, support CI/CD deployments, troubleshoot production issues, and ensure compliance with government standards.

The Java Developer will work on full-lifecycle development tasks, including software design, coding, testing, and mentoring junior staff.

The Java Developer will be responsible for full-lifecycle development tasks, including coding, testing, code reviews, and documentation, while mentoring junior staff.

The Java Developer will have at least 5 years of experience in Java development, including technologies like J2EE, Hibernate, and WebServices, plus other related skills.

Seeking a JAVA Developer with at least 5 years of experience in Java/J2EE, Hibernate, WebServices, and front-end technologies like HTML5 and CSS. Agile experience is a plus.

The Sr Java Developer will lead software development tasks, drive technical design, perform code reviews, and ensure project milestones are met, specifically in healthcare projects.

The Sr. Java Developer will manage full life-cycle activities for Claims Enhancement projects, including design, development, testing, and project milestone achievement.

The Java Developer will work in an Agile Scrum team, analyze user requirements, design systems, develop software, conduct testing, and mentor team members while ensuring best practices are followed.

The Java Developer will modify existing software, develop unit and integration tests, work independently, and collaborate with a Scrum team in an Agile environment to deliver quality applications.

The role involves developing, implementing, testing, and maintaining application systems, providing software development expertise and collaborating with various departments.

This role involves Java Full Stack Development, requiring design, implementation, and maintenance of software applications while ensuring efficiency and bug-free code.

The Java Developer will translate software requirements into solutions, focusing on back-end development, working with APIs and microservices, and following Agile practices.

Senior full-stack developer responsible for designing and implementing Java/Spring back-end APIs, React/TypeScript front-ends, and normalized PostgreSQL schemas. Duties include data migration, CI/CD and deployments, ensuring security and 508 accessibility, supporting lifecycle phases, and using AWS, Keycloak, Kubernetes, Docker, and Atlassian tools. Requires strong documentation, Agile experience, and 7+ years of experience.

Design, develop, test, and deploy full-stack Java applications (backend Java/Spring Boot, frontend React/Angular, PostgreSQL). Lead architecture decisions, mentor developers, perform code reviews, troubleshoot issues, implement testing strategies (JUnit, Cypress, Playwright), collaborate with product/QA/DevOps in Agile, and support VA mission-critical initiatives while meeting security and clearance requirements.

Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.

Reverse-engineer TIBCO BW/MFT processes to extract business logic, then design and implement a modular Java/Spring Boot microservices replacement. Migrate protocols to Kafka/RabbitMQ/REST, translate XML transformations, ensure data persistence and consistency, and validate performance to meet existing SLAs.

Design, build, and maintain Java/J2EE multi-layer applications and APIs. Collaborate with architects and DevOps to implement CI/CD, code quality, testing, and database solutions (DB2/Oracle, PL/SQL). Support cross-team delivery, resolve technical roadblocks, and drive process improvements in an asset management/financial services context.

Analyze legacy TIBCO BusinessWorks/MFT processes to extract business logic, design and build a decoupled Java/Spring Boot microservices platform, migrate protocols to Kafka/RabbitMQ/REST, translate XML-heavy transformations to modern formats, and validate performance and SLAs to match legacy throughput.

The Senior Full Stack Java Developer will design and maintain enterprise applications using Java and modern front-end technologies while collaborating in Agile teams and mentoring junior developers.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.

Lead migration of legacy COBOL systems to Java-based microservices and develop scalable, secure full-stack solutions on Azure. Build RESTful APIs, optimize performance, ensure DoD cybersecurity compliance, collaborate across teams, document architectures, and participate in Agile ceremonies.

Develop software for eService and Digital eXperience programs, including design, development, testing, and mentoring junior developers. Requires strong Java/JEE expertise.

Develop go user interfaces for a financial modeling application, automating workflows and creating dashboards while contributing to the software development life cycle.

The Sr. Java Developer will modify existing software, create unit and integration tests, work with Agile teams, and resolve technical issues in applications.

The role requires analyzing, modifying, and testing Java applications, creating unit tests, and participating in Agile teams, requiring 5+ years of Java experience.