Top Java Developer Jobs in Seattle, WA

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.

Develop Java/J2EE applications using Spring Boot and microservice architecture with AngularJS front-ends. Work with Cassandra and RabbitMQ concepts; cloud experience (Pivotal Cloud Foundry or AWS) is a plus. Requires 5+ years experience and a bachelor’s degree. Contract role with relocation and benefits.

Develop and maintain ATG/Java J2EE applications across the full SDLC. Implement REST/XML services, front-end features (AngularJS, jQuery, AJAX, JSON), and server-side components using Struts, Spring, Hibernate. Work with WebLogic, Oracle DB, JDBC/PLSQL, debug and document code, and collaborate with cross-functional teams.

Senior Java Developer to design, build and maintain Java/J2EE web and client/server applications. Work includes OOA/OOD, distributed systems, databases, messaging, APIs/frameworks, UI/frontend frameworks, SOA/web services, and automation in an Agile/TDD environment. Preferred experience with Cassandra, RabbitMQ, Pivotal Cloud Foundry and Spring Boot.

Senior Java Developer responsible for designing, implementing, and testing web and client/server applications using Java/J2EE and related frameworks (Spring, Hibernate). Work includes frontend integration (Angular/Bootstrap), database development and optimization (Oracle/SQL), messaging (MQ/JMS), CI/build tooling, testing, version control, and participating in Agile ceremonies and SDLC activities. Mentors team members and supports deployments.

Develop and maintain enterprise-class software for centralized management of hyper-converged data center products. Collaborate with cross-functional teams in an Agile/Scrum environment, integrate core product components, implement REST APIs, and automate firmware/software updates. Troubleshoot complex technical issues and drive maintainable software design using Java, Python, Spring, Cassandra and VMware technologies.

The Web Developer is responsible for designing, developing, debugging, and modifying software applications, providing solutions, and supporting documentation.

Design, build, and maintain backend services and large-scale data pipelines that ingest, transform, enrich, and index billions of records. Own features end-to-end, contribute to architecture, write testable performant code, perform reviews, support production systems, and collaborate with product and data science teams. Apply AI/LLM tooling to improve development and delivery.

Lead a small engineering team while writing production Java backend code daily. Design and own data ingestion, enrichment, entity resolution, and search-indexing systems. Ensure reliability, performance, observability, and technical quality; mentor engineers; collaborate with product and partners; drive down technical debt; use cloud, containerization, and CI/CD best practices to deliver scalable services.

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.

Senior Full Stack Java Developer to build and maintain enterprise-grade backend and UI applications. Collaborate with offshore teams; develop using Java, Spring Boot, Hibernate, ReactJS, Servlets/JSP; implement REST/SOAP services, database access, XML transformations, and unit tests; follow Agile and CI/CD practices.

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

Lead backend Java development and architecture for enterprise applications. Design and deliver scalable, resilient microservices and APIs, mentor developers, lead technical decisions, support production incidents, and implement CI/CD and cloud-native solutions on AWS.

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.

Senior hands-on Java Developer with at least nine years' experience building complex Java applications. Responsibilities include concurrent and multithreaded programming, binary manipulation in Java, object-oriented design, working in UNIX environments, SQL development, unit testing with JUnit, scripting (Python), and optionally Hadoop.

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.

Design, build, and maintain secure, high-performance RESTful APIs and microservices using Java and Spring Boot. Collaborate with cross-functional teams, implement API security (OAuth2/JWT/OpenID Connect), optimize databases, integrate messaging systems, write unit/integration/API tests, participate in code reviews and architecture decisions, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.

Lead architecture and delivery of enterprise Java full-stack applications. Hands-on development with Java/Spring Boot, microservices, AWS cloud-native services, database tuning (Oracle/RDS), CI/CD pipelines, monitoring, and incident resolution. Mentor engineers, enforce code quality, run architectural reviews, and collaborate with product, DevOps, and security teams to ensure scalable, secure, high-availability solutions.

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.

Develop, maintain, and optimize backend services and APIs for a scalable healthcare platform using Node.js, Java, or .NET. Integrate third-party services, ensure performance, reliability, and security, collaborate with cross-functional teams, participate in code reviews, and work in an Agile environment to deliver high-quality server-side applications.

Seeking a Java developer/consultant for 6+ months to develop Java applications using Core/Advanced Java, Spring, Hibernate/JPA, web services, XML/JSON, and JUnit. Must have database exposure (Oracle or SQL Server), development background (not support), and be willing to take ATG Dynamo training on client site.

Develop and maintain Java/J2EE web applications using Spring, Hibernate, Struts, JSP/Servlets. Build SOAP/RESTful web services and front-end components with HTML/CSS, JavaScript, AngularJS, jQuery, Bootstrap, and NodeJS. Apply J2EE design patterns and frameworks to deliver scalable enterprise solutions.

Design, develop, and maintain Java/J2EE web applications using Spring, Hibernate, Struts and J2EE design patterns. Implement JSP/Servlet-based UIs, REST/SOAP web services, and front-end features with HTML/CSS, JavaScript, jQuery, AngularJS, Bootstrap; may use Node.js.

Design, develop, and test portal and enterprise applications using Java/J2EE and MVC. Build Core Java back-end and front-end UI with HTML5, Bootstrap, jQuery, and AngularJS. Create prototypes and wireframes, participate across the SDLC (development and testing), collaborate with clients and global delivery teams, and apply analytical problem-solving.