Top Java Developer Jobs

Design and develop applications using Kafka, Java and Spring. Build and design RESTful (Spring MVC) and SOAP web services, leverage AWS, and work with integrations (Spring Integration, RabbitMQ). Support microservices, Scala, Spark and Big Data work. Participate in Agile/DevOps processes, potentially lead a team and work on payment-related solutions.

Design, develop and maintain full-stack web and enterprise applications using Java, Node.js and AngularJS. Implement REST/SOAP services, Spring/Hibernate-based server logic, multithreading and Java 8 features. Build responsive front-ends (HTML5/CSS3/JS), integrate MongoDB and relational databases, apply SDLC/TDD practices, automate processes, create visualizations/reports, troubleshoot production issues, and deploy to cloud environments (AWS).

Develop end-to-end enterprise Java applications using Spring and Hibernate. Build and expose web services, implement messaging solutions (JMS/MQ), perform complex Oracle queries, and deliver front-end work with JavaScript/jQuery/CSS. Contract role with onsite interview requirement in Cary, NC.

Lead technical design and development of Java-based software solutions for Capital Markets derivatives. Propose and implement complex designs, provide technical guidance, review code/testing/documentation, apply modern methodologies, and collaborate with business stakeholders to solve problems and improve systems.

Lead development of Annuities and Insurance applications, design and implement solutions using Java and Angular, mentor junior developers, and ensure quality delivery of software solutions.

The Trading Platform Developer will design and implement functionality for a real-time trading platform, optimize systems, and troubleshoot production issues. A focus is on low-latency systems development.

Designs, develops, tests, debugs, and maintains Java/J2EE applications using Spring, Web Services, ORM (Hibernate/JPA), and application servers. Provides technical direction, implements CI/DevOps practices, participates in design/architecture, and collaborates on complex projects while following SDLC and Agile methods.

Front-end focused Java Developer responsible for implementing UI mockups using HTML5, Angular, JavaScript and CSS, integrating with server APIs (JSON), debugging across browsers, and collaborating in Agile teams while communicating with clients.

Lead design and development of Java/Spring Boot microservices, guide and review engineering work, propose technical solutions, resolve complex problems, and apply modern practices (CI/CD, DevOps, security, scalability) while mentoring a team and producing documentation.

Develop and maintain Core Java applications with emphasis on strong data structures, algorithms, multi-threading, and concurrency. Collaborate on design and implement performant, thread-safe code.

Design, develop, and own high-performance C++ cloud-based ad-serving and distributed systems. Mentor junior engineers, collaborate with stakeholders, optimize algorithms, deploy and maintain Linux-based services, use Snowflake and Aerospike, review code, and improve system reliability and scalability.

Senior Full Stack Java Developer to build and maintain enterprise-grade backend and UI applications. Collaborate with offshore teams; develop using Java, Spring Boot, Hibernate, ReactJS, Servlets/JSP; implement REST/SOAP services, database access, XML transformations, and unit tests; follow Agile and CI/CD practices.

Participate in design, development, testing, debugging, and implementation of application systems. Work with stakeholders to define enhancements, support production systems, and apply Java/Python programming, Spring, microservices, and database technologies. Troubleshoot security vulnerabilities, mentor junior analysts, and adhere to Citi policies and development best practices.

Develop and maintain Java applications, build and deploy web services, and work with front-end frameworks like Angular or React. Requires knowledge in Spring and application design.

Design, build, and maintain secure, high-performance payment systems across backend (Spring Boot/WebFlux), frontend (React), databases (MySQL/Postgres), messaging, and AWS infrastructure. Implement REST APIs, OAuth2/JWT security, testing (JUnit/Mockito), observability (OpenTelemetry), and IaC (Terraform). Collaborate with product, QA, and distributed teams; mentor peers and resolve production issues.

Design, develop, and implement web-based Java applications and RESTful services using Java and Python. Build services on Hadoop data environments, create design documents, perform coding, testing, debugging, and help scale prototypes to production. Support a recommendation system for sales associates and address security/authentication concerns.

Develop, test, and maintain Java web applications (customer-facing and internal) for the NASA SEWP program. Design system components and interfaces, use design patterns, collaborate with developers and stakeholders, document designs and code, provide after-hours maintenance and Level II customer support, and adhere to agile processes and schedules.

Develop, maintain, and support Java web applications for the NASA SEWP program. Design system components, build customer-facing and internal web apps, document designs, follow design patterns, provide after-hours maintenance, and deliver Level II customer support.

Full‑stack Java developer responsible for front-end and back-end web development: build UIs (HTML/CSS/JavaScript), RESTful web services, integrate UI with services, and work with frameworks like Struts/Spring; Angular 2 experience is a plus. Requires 7+ years of relevant experience.

Modernize and migrate legacy Struts/JSP/Servlet applications to Spring Boot/Spring MVC and Angular. Develop RESTful APIs, refactor code for security and performance, write tests, troubleshoot defects, participate in Agile ceremonies, and use AI-assisted tools to accelerate analysis and documentation.

Design, develop, test, and implement web-based Java applications using Spring and Tomcat. Create design documents, debug and resolve technical issues, work across front-end and back-end systems, follow SDLC best practices, and collaborate with users and technical teams to gather requirements and drive engineering best practices.

Develop and implement scalable e-commerce system components per solution architecture. Collaborate with product, operations, and architecture teams, participate in sprint planning, produce documentation, create/modify tests and test harnesses, and assist in triaging production and non-production issues.

Develop and maintain Java/J2EE web applications and integrations using ESB technologies (Fuse, Camel, ServiceMix). Implement JMS messaging, optimize services for large-volume data, work with Oracle databases and PL/SQL, build SOAP/REST services, and perform data analysis and performance tuning using Java frameworks and related tools.

Port a PHP-based inventory tracking system to Java/Spring Boot and migrate a monolithic app to a service-oriented architecture on Cloud Foundry. Design, develop, and deploy large-scale Java projects, implement full-stack features (HTML/CSS/JS), integrate with Oracle, use GitHub, and follow cloud development principles.

Java Developer role in Chicago requiring expertise in Java 8, Spring and Spring Boot, Oracle/PL/SQL, and Test-Driven Development. Build, test, and maintain backend services, collaborate with team members, and ensure code quality through TDD practices.