Top Java Developer Jobs in Seattle, WA

Design, build, and maintain server-side Java applications and RESTful APIs. Optimize performance and scalability, ensure security, collaborate with cross-functional teams, perform code reviews, troubleshoot production issues, and document system architecture.

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.

Design, develop, test, deploy and maintain enterprise Java web applications. Lead requirements analysis, architecture collaboration, code reviews, debugging, performance tuning, and mentor junior engineers.

Senior hands-on Java developer to design and implement complex Java programs. Responsibilities include concurrent and multithreaded programming, binary data manipulation, OOP, working in UNIX, writing SQL and JUnit tests, and using scripting (Python). Hadoop experience is a plus. 12-month contract starting ASAP in Seattle, WA.

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.

Design, build and configure Java-based web applications and web services. Develop and maintain SOAP and REST APIs using Spring, J2EE, CXF/Axis2; perform backend Oracle CRUD, analysis, cleanup, and testing.

Responsible for developing and supporting high transaction e-Commerce systems, creating web services, and mentoring software engineers, while ensuring code quality and system performance.

The job involves developing applications as a Java developer, focusing on both front-end and back-end development with various technologies.

Seeking a Java Front End Developer with expertise in AngularJS and HTML to discuss solutions with customers and understand system architecture.

Looking for Java Developers skilled in Front-end (Java, JQuery, etc.) or Back-end (Java, Spring, SOAP, REST). Requires 3 to 6 years of experience.

The role involves architecture, design, and development of Java-based systems, overseeing projects, and advising clients. Extensive experience in Java development is essential.

Seeking a Java Front End Developer with experience in Java, AngularJS, and other front-end technologies to enhance user interface development.

Seeking Java developers proficient in backend frameworks like Spring or Hibernate and frontend technologies such as HTML, CSS, and JavaScript.

Develop Front End solutions using AngularJS and HTML, while understanding customer requirements and maintaining standards in web accessibility.

Architect and develop Java software for automated instruments, focusing on hardware integration, database management, and fostering technical leadership to optimize R&D efforts.

The Senior Java Developer will design, architect, and improve application software, leading technical solutions and mentoring team members in complex projects.

Develop large scale applications using Java, Python, and Hadoop. Oversee full life cycle development with significant experience.

The Senior Software Engineer will develop rich media applications using Java and Spring, focusing on REST services and Google Cloud. Experience in object-oriented design, iOS/Android support, and high-performance internet applications is required.

The Senior Software Engineer will develop JAVA services, work on SQL databases, and support iOS/Android apps, with a focus on high scalability and performance.

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.