Top Java Developer Jobs

Develop, test, and deploy Java application components. Create JUnit tests and component documentation, prepare test environments, run component/assembly/system tests, troubleshoot and support applications, and collaborate with users to validate test results.

Design, implement, test, and deploy Java applications; contribute to architecture; conduct code reviews; optimize database schemas and queries; integrate with external systems/APIs; troubleshoot bugs and performance issues; create and maintain technical documentation.

Translate functional requirements into technical designs, develop Java-based applications (Spring/SpringBoot), write unit tests (JUnit), build RESTful APIs, collaborate with QA on test scenarios, maintain system documentation, and support deployments and Tomcat configuration.

Design, develop, test, and deploy high-performance Java backend applications. Optimize SQL queries, ensure API security, implement automated testing and CI, monitor performance, and maintain technical documentation.

As a Java Developer at Fiserv, you'll design and implement resilient high-volume solutions, develop APIs, collaborate with teams, and enhance systems using modern cloud practices.

Design, build, and maintain highly available, performant data systems that record and process billions of market events daily. Drive architecture, support APIs and analytics, automate monitoring/alerting, generate reports, and collaborate with stakeholders to deliver scalable, reliable solutions for FX and UST trading data.

Lead the evolution of a fraud screening platform by integrating Generative AI and machine learning, mentoring teams, and driving solutions in an Agile environment.

Senior Java engineer delivering AI-augmented production features and modernizations across a Java/Python/AWS stack. Pair with engineers to embed agentic practices, own systems end-to-end, participate in AI-augmented reviews, and judge agent use versus human intervention.

Senior Java engineer delivering AI-augmented production features and modernizations across a Java/Python/AWS stack. Own systems end-to-end, pair with engineers to transfer agentic practices, perform AI-augmented code reviews, and judge when to trust or intervene with agent outputs.

The Lead Java Software Engineer will develop and maintain distributed software solutions for security settlements, collaborating with various stakeholders and leading a development team.

Senior Core Java Developer responsible for designing and building large-scale, high-volume applications using Core Java, SOAP/REST services, Spring MVC and NoSQL databases. Requires strong OOP and design pattern skills; experience with CI and related Java ecosystem tools preferred.

Design, develop, and unit test complex n-tier Java applications; write and analyze complex MS SQL Server queries; produce technical documentation; estimate scope and schedules; and communicate technical concepts to business stakeholders. Requires hands-on Java and MS SQL Server experience.

Hands-on developer role focused on building applications using Java or .Net and Groovy, with front-end skills in CSS3 and JavaScript. Requires practical coding experience with listed technologies.

Develop and maintain Java/J2EE applications using Servlets, JSP, Spring, Web Services and WebLogic. Work with JMS, SQL/PL-SQL, UNIX and Autosys. Handle incident and problem management via Remedy/ServiceNow/Maximo. Implement BPM (Activiti) and Drools rule engine. Must work rotating shifts.

Senior Java Application Developer responsible for designing, developing, and implementing multi-tier J2EE web applications. Requires 6+ years experience, proficiency in Core Java and JavaScript, ORM frameworks (Hibernate/iBatis/MyBatis), Spring, SOAP/REST web services, SQL/PL-SQL, MVC and SOA principles, and experience with Agile/Scrum methodologies. Banking experience is a plus.

Design, implement, and maintain scalable software and data ingestion (ETL/streaming) solutions. Optimize DB2 performance, build automation and CI/CD pipelines, apply TDD, troubleshoot in UNIX/Linux, and collaborate with cross-functional teams to support liquidity reporting and risk-management platforms.

Design and execute load, stress, scalability, and reliability tests. Analyze Java application and JVM performance, identify bottlenecks, implement architecture- and code-level optimizations, troubleshoot production microservice performance, build automated performance tooling, and collaborate with DevOps to ensure high availability.

Design, develop, maintain, and deploy Java-based, distributed enterprise applications. Collaborate with product and IT teams, ensure performance, scalability, security, and test coverage, participate in code reviews, support production deployments and troubleshooting, and help improve platform architecture and technical practices.

Lead the Credit Risk Technology team, overseeing software development and architecture, leveraging AI tools, and managing project delivery in a high-performance environment.

Senior Java engineer to design, develop, optimize, and support high-volume transactional systems. Collaborate with product owners, QA, DevOps and teammates to deliver, deploy, tune, document, and maintain production-critical applications and services.

Architect, implement, and optimize live and on-demand streaming pipelines in Wowza. Design scalable transcoding and packaging workflows, debug performance issues, integrate native code via JNI, and serve as a streaming subject-matter expert across cross-functional projects.

Lead architecture and development of scalable Java-based WFM server-side solutions, champion AI-assisted development, drive engineering standards, mentor senior engineers, resolve production issues, and collaborate cross-functionally to deliver enterprise software.

Develop, maintain, and modernize enterprise Java applications used in aerospace environments. Participate across the SDLC in an Agile team: design, code, test, debug, document, and support mission-critical systems while following quality, security, and compliance requirements.

Lead development and maintenance of Java backend services for enterprise blockchain applications. Design and optimize scalable blockchain solutions, integrate APIs with React/Vue frontends, troubleshoot complex backend issues, and collaborate with frontend teams while staying current with blockchain best practices.

Optimize and scale blockchain node performance, design and implement core system plugins, collaborate with cross-functional teams, conduct performance testing and debugging, and stay current on blockchain and distributed systems technologies to maintain reliable infrastructure.