Top Senior Java Developer Jobs

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.

Develop and operate Java Spring Boot microservices, deploy and manage services on Kubernetes, perform JVM profiling and heap analysis, load test, diagnose memory leaks, OOMs and P99 latency spikes, remediate security vulnerabilities, and maintain GitHub-based CI/CD and branching workflows.

Develop, install, maintain, and modify Java-based applications. Analyze user requirements, design and implement solutions, and work independently on moderate-to-complex problems. Collaborate with internal/external contacts and may extend work to front-end technologies like JavaScript, HTML, and Angular.

Develop and deliver high-volume, customer-facing Java web applications using Spring and related technologies. Build REST services, integrate with SOAP/REST back-ends, participate in Agile/TDD workflows, perform code reviews, and mentor junior developers while driving improvements.

Maintain, support, and enhance IAM Identity Infrastructure applications. Interface with middleware to upgrade 300+ WebLogic instances and modify apps for compatibility. Perform application regression testing, fix backward-compatibility issues, and handle installation, configuration, and optimization on platforms like WebLogic, Tomcat, and Drools (JBoss). Support design, build, and operation of large-scale enterprise applications.

Design, develop, test, debug, and implement enterprise Java cloud applications. Build microservices, manage deployments on Docker/Kubernetes and AWS, integrate NoSQL data stores, collaborate across teams, and monitor application performance.

Designs and delivers web-services-based solutions on the Java platform for complex systems (identity, access, ecommerce, subscription). Performs system analysis, coding, unit/integration testing, documentation, and adheres to standards for security, accessibility, and performance. Works in cross-functional Agile teams, decomposes requirements, estimates tasks, and participates in architecture and design reviews.

Design and develop a high-volume, distributed multi-tenant Java platform. Build and deploy Java/Scala services with RESTful APIs in a Big Data environment, focusing on low-latency, concurrency, relational database integration, test-first development, and Agile practices.

Lead and mentor on-shore/off-shore Java development teams to design, develop, test, debug, and deploy complex web applications and services. Drive technical reviews, estimates, best-practices, and incident resolution; collaborate with business sponsors and clients; write unit tests; ensure database and performance/security considerations are addressed.

Senior back-end Java developer responsible for designing, developing, testing, deploying, and maintaining scalable web platform services. Responsibilities include RESTful API design, migrating legacy systems, mentoring team members, evaluating new technologies, and collaborating with product management.

Senior Java Developer focused on front-end UI development. Build highly interactive user interfaces using JavaScript, HTML5, CSS3 and jQuery. Spend majority of time on client-side features and some backend work with Java/JSP. Collaborate with product and design teams, solve complex problems, evolve architecture, and deliver features on schedule.

Lead AEM developer responsible for Adobe CQ/AEM development with strong Java/J2EE skills; manage tag/script via Adobe DTM, A/B testing with Adobe Target, collaborate with PM/QA/UX, assist deployments and migrations, integrate social features, and generate Adobe SiteCatalyst reports.

Develop Java-based integrations between LMS and HR systems, perform ETL extraction and transformation (using Pantheon) to load LMS data into BigQuery, and write/maintain SQL queries.

Senior Java Developer to design and implement Java applications, work with modern JavaScript frameworks, and apply strong development practices (unit testing, CI, refactoring). Must have banking or investment domain experience. Requires collaboration with teams to produce clean, maintainable code.

Design, develop, and maintain scalable enterprise Java microservices using Spring Boot and RESTful APIs. Build cloud-native applications on AWS/Azure/PCF/GCP, integrate front-end frameworks (Angular or React), work with databases (Oracle, MS SQL, MongoDB, Redis), and collaborate in Agile teams with product managers and designers to deliver reliable, maintainable software.

Senior Java/J2EE web-tier developer to design frameworks, build reusable infrastructure components, implement socket/IP solutions, and create cross-browser UI widgets. Must have strong experience with Spring, Struts, Hibernate/iBatis/JPA, JDBC/SQL, XML, web services, SVN, and Google Web Toolkit. Will perform PoCs, collaborate across technologies, and communicate technical solutions clearly.

Hiring 18 Java developers for three on-site locations (NY, Chicago, Dowingtown PA). Candidates must have 6-8 years Java experience, SCJP certification, and strong skills in Oracle, UML/design, Hibernate, Spring, Servlets, Struts, and front-end technologies (JavaScript/HTML/CSS/AJAX).

Lead development of Java/J2EE applications using Spring, Hibernate, Web Services, and WebSphere. Work with PL/SQL, Adobe Flex, unit testing, basic Unix, and follow SDLC processes.

Lead and guide a Web & Mobile Scrum team to deliver enterprise Java/J2EE applications, manage releases and backlogs, resolve escalations, enforce best practices, integrate middleware and databases, and ensure delivery on-time and on-budget while collaborating across IT, PMO, and release teams.

Senior Java developer to maintain and scale a high‑profile sales application (Spectrum). Work includes Java backend development, REST web services, MySQL/Oracle integration, using Eclipse, EJB, JBoss and GWT frontend components. Collaborate with a small dev/QA team, redesign parts of the app, add interactive engineering document features, and follow agile practices. Strong communication skills required. Contract 6+ months.

Lead UI-focused Java developer to design and implement ExtJS/Sencha-based front-ends, dashboards, and UI reporting. Integrate UI with middle-tier/backend, perform performance tuning, produce high- and detailed-designs, lead a team including offshore members, and drive development across the SDLC with strong communication and ownership.

Design, develop, test, and deploy enterprise Java/JEE applications using Spring and Hibernate. Build and run web services (SOAP/REST), write JUnit tests, and manage builds with Ant/Maven. Configure and troubleshoot WebLogic/JBoss, work on message-oriented integrations and databases (Oracle/SQL Server), and participate in Agile/Scrum teams following CI and automated testing practices.

Senior Java/J2EE developer responsible for hands-on Java and front-end (HTML/CSS/JavaScript) coding, SQL work, and retail SCM domain tasks (WMS, inventory, order management). Coordinate offshore/onshore teams, support data migration/staging, work with business users to define requirements and roadmaps, and deliver projects using Agile and Waterfall approaches. Contract-to-hire, strong communication required.

Senior backend-focused Java developer responsible for building middleware and RESTful web services, working with NoSQL databases (MongoDB, Cassandra, Redis, Riak) in an Agile environment. Must communicate complex systems clearly. 2-year duration, face-to-face interview; local candidates preferred.

Senior hands-on Java/J2EE developer responsible for coding, complex SQL development, and front-end work (JavaScript/HTML/CSS). Must have deep Retail SCM knowledge (WMS, inventory, order management), experience with data migration/staging, work with business users to define requirements and roadmaps, deliver use-case driven solutions, follow Agile/Waterfall, and coordinate offshore-onshore teams. 6-month contract-to-hire.