Top Java Developer Jobs in Seattle, WA

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.

Develop secure, scalable Java applications within an agile engineering team. Provide technical guidance, review and debug production code, influence application design and technical processes, and serve as a subject matter expert. Lead adoption of AI-assisted development tools with validation for security, performance, and correctness. Apply SDLC, CI/CD, resiliency, security, and Kubernetes expertise while supporting containerized applications and collaborating with technical teams, contractors, and vendors.

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.

The Sr Staff Software Engineer will drive technical strategy, design scalable systems, lead engineering activities, and mentor teams while managing platform improvements and integrations.

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 and delivery of custom cloud-based software solutions. Implement and mentor teams on Java web services and Spring Boot applications, leverage cloud platforms (AWS/GCP/Azure), ontology and semantic search, NoSQL/graph databases (MongoDB/Neo4J), ORM (Hibernate), build and CI tools (Maven, Jenkins/TeamCity), and TDD/BDD practices.

Lead development of cloud-based custom software using Java and modern web frameworks. Provide technical leadership, drive TDD/BDD practices, design web services, use CI/CD, containers, NoSQL, and ORM technologies to deliver automated cloud solutions for clients.

Develop and deliver cloud-based custom software and Java web services using TDD/BDD practices. Work with containers, ORM, modern build and CI tools, and web frameworks (Spring Boot) on collaborative teams to implement Continuous Delivery solutions for clients.

Lead design and delivery of custom cloud-native Java applications and services. Provide technical leadership, build indexed searchable interfaces for media assets, implement containerized solutions, and apply CI/CD, TDD/BDD, and cloud infrastructure automation practices to meet client requirements.

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.

The Software Engineer will design and implement customer-facing software, focusing on security and cloud solutions, while collaborating with cross-functional teams.

Develop backend services for AI applications, focusing on software design, documentation, and code reviews. Requires proficiency in Scala and cloud environments.

Design, develop, and maintain web-based UI and REST middleware for federal health IT systems. Participate in Agile/SAFe ceremonies, write design documents, implement features, resolve bugs, and support CI/CD pipelines while collaborating with product, QA, and stakeholders.

Develop, test, and maintain a complex distributed processing application using Python and Java. Collaborate with product owners, data coaches, analysts, DBAs, and Agile teams to meet backend/frontend requirements. Work with distributed workloads (Spark/Hadoop), SQL/Snowflake, AWS, shell scripting, and job scheduling/process automation. Support delivery under Agile/SAFe practices and ensure alignment with program standards.

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 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.