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 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.

Lead design, development, testing, and maintenance of enterprise Java microservices and front-end applications. Build APIs, CI/CD pipelines, and containerized deployments; troubleshoot production, ensure security/compliance, mentor junior developers, and collaborate within Agile teams.

Build and deliver backend enterprise web applications for Citi's Integrated Digital Assets Platform using Java/Spring and web3 technologies. Collaborate with distributed teams, follow best practices and design patterns, write technical documentation, resolve issues, and ensure scalability, reliability, and performance.

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.

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.

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.

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.

Build and maintain backend services and REST APIs using Java (11/17+) and .NET (ASP.NET Core). Implement business logic, data access, and integrations; write well-tested code with JUnit/xUnit/NUnit; contribute to CI/CD and DevOps; participate in design, code reviews, and Agile ceremonies.

Design, build, and improve Elasticsearch distributed-systems components for scalable, concurrent, and consistent indexing. Maintain cluster coordination for performance and resilience, push system scale limits, investigate performance and concurrency issues, support operations/support engineers, and lead projects involving multiple engineers from design through delivery.

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.

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 work on full-lifecycle development tasks, including software design, coding, testing, and 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.

Design, build, and maintain efficient, reusable Java backend systems; translate business requirements into applications; optimize performance and stability; review and test code for quality and security; identify and fix bottlenecks and bugs; maintain code quality and system responsiveness.

As a Staff Software Engineer, you will lead technical strategies, develop APIs and microservices, and mentor engineers for innovation at GEICO.

Lead design, development, testing, integration and deployment of Java/J2EE applications. Produce technical artifacts, mentor team members, enforce standards, estimate work, and drive release and implementation activities to ensure high-quality delivery.