Top Java Developer Jobs in Washington, DC

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

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

The Java Developer will enhance data utilization for a state-run project, creating web applications and integrating systems, while collaborating with teams to ensure functionality and efficiency.

Design and implement backend APIs with Java/Spring Boot and responsive UIs with React/TypeScript. Build normalized PostgreSQL schemas, support data migration, manage CI/CD and deployments, ensure accessibility and security compliance, and participate in all SDLC phases within an Agile team.

Design, develop, test, deploy, and maintain scalable Java backend applications using Spring Boot and microservices. Build RESTful and SOAP integrations, optimize performance and reliability, implement security controls, and develop relational and NoSQL database solutions. Collaborate with architects, product owners, and frontend teams; participate in design reviews and architectural decisions; troubleshoot production issues; and uphold DevOps, CI/CD, coding, and Agile practices. Mentor junior developers and guide technical discussions across enterprise development teams.

Investigate and resolve data-quality issues in large-scale distributed systems. Design Java-based repair pipelines and idempotent correction jobs for high-volume datasets, debug existing code, use AWS services for queue-driven and batch workflows, optimize performance and concurrency, and communicate technical findings and risks to stakeholders.

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.

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.

Designs, implements, and runs Java Spring Boot microservices and REST APIs; leads design, CI/CD, TDD, performance tuning, security, and cross-product collaboration. Coaches teams and owns product KPIs and production support.

Senior Java Developer responsible for full SDLC: design, develop, test and deploy Java/J2EE web applications using Spring/Hibernate, messaging (MQ), RDBMS (Oracle/SQL Server/MySQL), and front-end frameworks (Angular/Bootstrap). Collaborate in Agile teams, perform code-level implementation, unit testing, and production support.

Senior Java developer responsible for designing and implementing distributed, real-time web applications. Work includes OOA/OOD, backend Java/J2EE, Spring/Hibernate, SOA/web services, APIs, relational databases, messaging systems, and automated build/test pipelines. Collaborate in Agile/TDD teams, implement rich UIs, and support deployment on Unix/Windows environments. Preferred experience with Cassandra, RabbitMQ, Pivotal Cloud Foundry, and Spring Boot.

Develop and maintain ATG/Java J2EE applications across the full SDLC. Build and integrate REST/XML web services, back-end frameworks (Spring, Hibernate), WebLogic/Oracle DB, front-end components (jQuery/AngularJS), and microservices with RabbitMQ. Collaborate with stakeholders, troubleshoot issues, and contribute to deployment on AWS; occasional iOS/Swift work expected.

Design, build, and support cloud-native full stack or backend Java products using TDD, CI/CD, microservices and event-driven patterns. Collaborate with product teams, provide production support, implement monitoring and ensure secure, performant systems.

Design, build, and maintain scalable J2EE business applications. Implement features, fix bugs, participate in code reviews, automate tests, optimize performance, and produce documentation.

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.

Design, develop, and maintain backend systems and RESTful APIs using Java and Node.js (NestJS). Build scalable, event-driven microservices with Kafka, work with SQL Server/MongoDB, deploy and monitor on AWS/GCP, and containerize/orchestrate with Docker, Kubernetes, or ECS. Collaborate across teams, refactor code for performance, and follow software best practices.

Design, build, and maintain scalable enterprise full-stack applications using Java, Spring Boot, microservices, and modern front-end frameworks. Implement cloud-based solutions on AWS, contribute to CI/CD and DevOps automation, optimize performance and security, and integrate AI-driven capabilities using Python and orchestration tools like LangChain and LangGraph.

The Java Production Support Developer will analyze, develop, integrate, and maintain applications, providing support, troubleshooting, and mentoring team members. They will ensure software meets functional and non-functional requirements while collaborating with various technical teams.

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.

Lead reverse-engineering of TIBCO BW/MFT processes, document business rules, and reimplement them as modular Java/Spring Boot microservices. Migrate protocols to Kafka/RabbitMQ/REST, ensure data consistency, and perform performance testing to match legacy SLAs.

Design and build Java/J2EE solutions using Spring and APIs; develop webservices, DB schemas, PL/SQL and transactional SQL in DB2/Oracle; collaborate with architects, developers and DevOps to implement CI/CD (Jenkins, uDeploy), ensure code quality (Sonar), perform code reviews and testing, resolve technical roadblocks, and drive process improvements. Requires strong communication and teamwork.

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, develop, and modernize software by translating legacy mainframe code (COBOL/ASM/JCL/Copybooks) into Java microservices. Support UI integration, relational and hierarchical databases, batch and real-time processing, CI/CD, cloud-native and ZT/ICAM integration, and use AI/ML tools to assist translation and optimization. Work supports pre-production, testing, and integration activities.

The Staff Engineer will leverage over 5 years of experience in Java, JavaScript, and frameworks to develop robust solutions, mentor teammates, and enhance client outcomes while utilizing agile methodologies and cloud development tools.