Top Senior Java Developer Jobs in Seattle, WA

Senior Backend Engineer responsible for designing scalable Java Spring microservices, implementing features, resolving defects, and improving backend architecture. The role involves event-driven systems, relational and NoSQL databases, testing, code quality, mentoring engineers, technical leadership, and collaboration with product teams. Engineers will also validate AI-assisted code, promote AI development practices, and work with cloud-native tools across AWS, Docker, Kubernetes, and continuous delivery systems.

Leads enterprise technical strategy and roadmap execution while designing, building, and enhancing scalable software systems. Provides technical leadership across engineering teams, drives architecture and cloud adoption, ensures solution quality and performance, mentors engineers, and improves development practices. The role requires deep Java and software architecture expertise, experience with microservices, DevOps, Azure, cloud infrastructure, security protocols, monitoring, and large-scale system design.

Leads the architecture, development, deployment, and support of scalable full-stack applications using React, TypeScript, backend services, cloud platforms, and distributed systems. Owns features end to end, drives technical design and code reviews, implements testing and observability strategies, resolves production issues, mentors engineers, and collaborates with product, architecture, design, and business stakeholders.

Senior individual-contributor backend engineer responsible for designing, building, and operating production-grade, highly available, strongly consistent services for wallet operations, transaction orchestration, blockchain integrations, and event-driven workflows. Implement secure, scalable APIs, cryptographic key management, Kafka-based event systems, observability with OpenTelemetry, CI/CD pipelines, and produce tests, API specs, and operational runbooks.

Develop and maintain scalable enterprise Java applications and Spring-based microservices. Responsibilities include hands-on coding, unit and system testing, debugging, technical documentation, performance optimization, troubleshooting distributed cloud environments, and adherence to software development and security standards. Collaborate with technical leads, architects, and cross-functional Agile teams to design and implement complex global applications.

Maintain and support Java-based healthcare SaaS applications across multiple customer environments. Responsibilities include bug fixes, feature delivery, refactoring, deployments, security remediation, SQL and data migrations, code reviews, configuration improvements, and production support. The role requires a generalist software engineer comfortable with Java, Angular, SQL, REST APIs, enterprise applications, and customer-facing environments.

Develop and maintain scalable Java and Spring Boot backend applications, microservices, and RESTful APIs. Responsibilities include database integration, code reviews, performance optimization, production troubleshooting, testing, CI/CD, cloud deployment, and collaboration with product, QA, and DevOps teams.

Develop and maintain scalable Java and Spring Boot backend applications and REST APIs. Optimize CPU, memory, and overall application performance; identify bottlenecks; resolve production issues; and contribute to architecture, code reviews, reliability, and scalability. The role also involves Node.js or Python FastAPI services, cross-functional collaboration, and potential work with GraphQL, generative AI, cloud platforms, containers, CI/CD, and monitoring tools.

Designs, develops, tests, documents, and operates large-scale distributed software products for Allstate’s Enterprise Payments organization. Responsibilities include building Java and Spring Boot REST APIs, designing microservices, collaborating on system architecture, practicing paired programming and test-driven development, establishing CI/CD pipelines, improving performance, securing APIs, supporting production applications, and contributing to Agile planning, retrospectives, and knowledge sharing.

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

Looking for an experienced Java Developer with expertise in Spring, SOAP/REST services, JAXB, OSGI, Oracle, and Hibernate. Position available as contract or full-time.

Seeking a Java Developer with expertise in Microservices, Spring Boot, and RESTful services, with a focus on API-first methodology and relevant technologies.

The Lead Java Developer will be responsible for leading agile teams, developing Java applications from scratch, and utilizing Docker for deployment. Must drive collaboration between onshore and offshore teams.

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.

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 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.

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.