Top Java Developer Jobs in Washington, DC

Lead development of scalable Java backend applications and high-availability cloud services. Design architectures, REST APIs, databases, caching systems, and distributed session infrastructure. Mentor engineers, drive technical initiatives, address performance and scalability challenges, and uphold quality and automation practices for endpoint management products.

Designs, develops, tests, debugs, documents, and maintains enterprise software using Java and OpenText Documentum. Responsibilities include full lifecycle development, technical specification, integration, upgrades, troubleshooting, disaster recovery, repository administration, automated testing, TDD, and Agile collaboration. The role supports high-traffic transactional web applications for government customers in a hybrid Washington, D.C. and Dulles, Virginia environment.

Develops and maintains enterprise applications using Java/Jakarta and relational databases. Responsibilities include database architecture, user interfaces, business logic, secure coding, unit testing, version control, troubleshooting, production support, reporting, and ad hoc queries within an Agile environment. The role supports mission-critical federal Defender Program applications and protects system data integrity.

Provides L3/L4 support and develops Java solutions integrated with IBM i/AS400 systems. Responsibilities include incident resolution, root cause analysis, architecture and solution design, application enhancements, project delivery, code reviews, mentoring, documentation, and stakeholder collaboration. The role uses ServiceNow and JIRA within ITIL processes and requires participation in on-call rotations.

Develop and support enterprise full-stack applications within an agile Scrum team. Responsibilities include building Java and Spring Boot APIs, secure React user interfaces, PostgreSQL schemas and queries, data migrations, REST integrations, deployments, version control, CI/CD pipelines, documentation, and O&M support. The role also requires compliance with accessibility and enterprise security practices, collaboration throughout the software development lifecycle, and experience with cloud, containerization, database, and DevOps technologies.

Develop and maintain enterprise Java applications and production front-end interfaces. Build responsive, accessible UIs with JavaScript or TypeScript frameworks, integrate them with Spring Boot services through REST and event-driven APIs, and develop RESTful and SOAP services. Manage relational databases, optimize performance, apply secure coding practices, write tests, conduct code reviews, collaborate with QA, DevOps, UX, and product teams, and maintain technical documentation.

Build and operate core components of Elasticsearch’s distributed Serverless offering. Improve concurrent indexing, cluster coordination, data allocation, scalability, performance, and resilience across large distributed systems. Investigate and resolve complex concurrency, stability, and performance issues end to end, while collaborating across teams and supporting engineers with difficult technical problems.

Designs, builds, and operates core distributed systems for Serverless Elasticsearch. Responsibilities include improving concurrent indexing, cluster coordination, scalability, resilience, and performance across nodes and petabytes of data. The role investigates complex concurrency and stability issues, supports support engineers, owns operational resolutions, and leads projects across multiple engineers and teams.

Build Java and JavaScript services that ingest public health IT data, monitor FHIR endpoints, validate resources, and create reproducible compliance evidence cases. Responsibilities include developing REST services, AWS/DynamoDB data models, deterministic validators, endpoint monitoring, scheduling, retries, rate limiting, audit logging, testing, and documentation. The role requires protecting against collection of patient data, PHI, credentials, and tokens while supporting replayable and human-reviewed validation workflows.

Develop and maintain microservices and full-stack web applications using Java, C++, Python, and cloud technologies. Apply Agile, DevSecOps, CI/CD, GitLab, and automated testing practices. Support cloud development environments, unit and integration testing, technical leadership, mentoring, task direction, work-product reviews, customer collaboration, and training-material development. This is an on-site role supporting space and intelligence systems in Boulder, Colorado.

Develop Java-based microservices and full-stack web applications using Java, C++, Python, and cloud technologies. Apply Agile, DevSecOps, CI/CD, GitLab, unit testing, and integration testing practices. Support cloud development environment configuration, mentor junior engineers, provide technical direction, review work products, collaborate with customers and multidisciplinary teams, and maintain training materials.

Design, develop, test, deploy, and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, and Node.js. Build REST APIs, microservices, PostgreSQL data models, integrations, CI/CD pipelines, and containerized deployments. Improve application reliability, observability, security, performance, and scalability while troubleshooting production issues. Collaborate with Product, UX, QA, DevOps, Architecture, and engineering teams through design sessions, code reviews, planning, and client-facing workshops.

Develop and maintain scalable Java/Spring Boot backends and Angular frontends. Build REST APIs, messaging and caching solutions, write automated tests, conduct code reviews, troubleshoot issues, and participate throughout the software development lifecycle. Collaborate with analysts and QA teams while ensuring performance, accessibility, security, and code quality. The role also requires cloud, containerization, Agile, database, and AI-assisted development experience.

Develop core infrastructure and horizontally scalable APIs for Elasticsearch. Solve complex performance, concurrency, stability, and operational issues; improve observability and developer productivity through automation and AI-enabled workflows. Lead cross-team projects, design APIs, support difficult customer issues, and own investigations through resolution. Collaborate across distributed engineering teams while contributing to open-source projects and maintaining secure, performant, and reliable platform functionality.

Build and enhance production-grade full-stack applications using React, Java, and/or Python. Develop scalable microservices and RESTful services, resolve performance and architectural issues, and deliver high-throughput, low-latency systems in cloud environments. Collaborate in Agile teams, use modern development and CI/CD practices, apply AI-assisted development tools, and mentor engineers while owning implementation across the application stack.

Build enterprise workforce management software for forecasting, capacity planning, scheduling, adherence, intraday management, and reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, integrations, and PostgreSQL data models. Support cloud-native deployments, CI/CD, testing, performance optimization, production troubleshooting, and technical design. Collaborate with product, operations research, QA, DevOps, UX, and client stakeholders.

Develop and deploy Java applications using Spring Boot and Spring Batch. Design and integrate microservices, build secure and performant REST/OData APIs, optimize SQL queries and database designs, and maintain code quality through JUnit testing and quality tools.

Develop secure, scalable full-stack applications using Java, Spring Boot, microservices, REST APIs, AWS, Docker, and Kubernetes, while leading Angular frontend architecture and development. Build responsive interfaces with Angular, TypeScript, NgRx, RxJS, and Angular Material. Contribute across the software development lifecycle, including design, testing, automation, troubleshooting, and deployment. The role requires enterprise architecture experience, Agile collaboration, and mandatory fraud prevention domain expertise.

Build secure, scalable full-stack applications using Java, Spring Boot, microservices, REST APIs, AWS, and Angular. Develop responsive user interfaces, integrate APIs, implement authentication and authorization, design distributed architectures, and support testing, troubleshooting, and automation. The role requires mandatory fraud prevention domain experience and collaboration within Agile engineering teams.

Build and maintain AI-assisted full-stack platforms for manufacturing, spanning AWS infrastructure, Python Lambda services, Java microservices, agentic LLM workflows, and Angular interfaces. Develop event-driven architectures, APIs, retrieval and scoring systems, infrastructure as code, observability, CI/CD, and secure deployment strategies. Apply rigorous testing, specification-driven development, concurrency practices, and production reliability techniques across multi-repository systems. The role requires hands-on software development experience with enterprise server, storage, or networking products.

Design, build, and deploy secure, high-performance, scalable cloud-native applications supporting Ariba P2P. Work full-stack in Java using Spring Boot and the SAP BTP Cloud Foundry CAP (Java) model, applying resiliency, security, and performance best practices.

Develop and maintain Java Spring Boot services with multithreading and Spring Batch. Build OData/REST APIs, write high-coverage JUnit tests, and author SQL queries. Ensure robust exception handling and code quality; collaborate on automation and UI work where needed.

Develop and maintain scalable Java backend systems using Spring Boot and microservices architecture. Collaborate with customer teams, review specifications, write clean code, participate in code reviews, document solutions, and troubleshoot and optimize backend performance, reliability, and security. The role also contributes technical expertise to training next-generation AI systems, though prior AI experience is not required.

Develop and maintain Java applications, RESTful services, and Angular frontends using Spring Boot and NgRx. Deploy applications to cloud platforms, practice TDD, manage CI/CD with Jenkins, and work with Oracle and PostgreSQL databases. Participate in agile processes, collaborate with cross-functional teams, mentor engineers, and independently lead technical initiatives and feature delivery.

Develop and maintain Java web applications that interact with databases. Responsibilities include gathering requirements, writing Java and SQL code, optimizing database queries, supporting backend development and data integration, applying Agile and software development best practices, and collaborating with technical teams to deliver quality code.