Top Java Developer Jobs in St. Louis, MO

Full Stack Developer responsible for front-end and back-end development of SPA and microservices. Build RESTful services and UI using React/Redux, Vue/Angular, Node.js, Java, and PostgreSQL on AWS within agile short-sprint teams. Deliver scalable microservices and apply best practices for single-page architectures.

Designs and architects Java/J2EE applications: analyzes specs, produces conceptual and detailed designs, recommends solutions with BAs/management, implements multi-tier systems using Java frameworks, web services, build tools, and databases.

Senior Java Software Engineer responsible for full SDLC on the Vehicle Management Team: developing prototypes, coding Java/J2EE applications, analyzing requirements, configuring J2EE servers, performing unit/integration testing, and collaborating with IT teams on web, mobile, and cloud solutions using Spring, Hibernate, Struts, Oracle, and Web Services.

Lead and mentor engineering teams to design, build, deploy, and operate Java/Spring microservices and cloud-native clinical interoperability products. Collaborate with product, EHR partners, and cross-functional teams, ensure code quality, CI/CD, security, observability, and Agile delivery for large-scale healthcare systems.

Designs, develops, and maintains scalable Java applications; leads feature development, performance optimization, code reviews, testing, and architectural decisions. Provides technical guidance and mentorship to junior developers while collaborating with product owners, architects, QA, and DevOps teams. Requires expertise in Java, Spring, APIs, cloud technologies, and modern software development practices.

Develop and integrate SOAP and REST APIs using Mule ESB and Java. Implement XPath and XSLT transformations, apply SOA and web services best practices, coordinate across teams, and produce clear technical documentation.

Develops high-quality, maintainable Java software with a small team. Provides guidance to client teams on modern software development practices and scalable application design. Uses test-driven development, collaborates on digital solutions, and participates in ongoing training and professional development.

Design, develop, and modernize full-stack web applications using Java and Angular in a cloud microservices architecture. Build and deploy Dockerized services on AWS (ECS/ECR), implement REST APIs, write unit and automated tests, enforce code quality in GitLab pipelines, collaborate in Agile teams, and mentor teammates. Participate in sprint ceremonies, manage user stories, perform testing (functional, exploratory, performance), and resolve defects to deliver reliable production software.

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.

Lead design and delivery of scalable, resilient distributed systems. Act as technical authority across teams, mentor engineers, drive architecture and CI/CD best practices, troubleshoot production issues, optimize performance, and enhance observability while writing production-grade Java.

Lead design, development, testing, and maintenance of enterprise Java microservices and front-end applications. Build APIs, CI/CD pipelines, and containerized deployments; troubleshoot production, ensure security/compliance, mentor junior developers, and collaborate within Agile teams.

Build and deliver backend enterprise web applications for Citi's Integrated Digital Assets Platform using Java/Spring and web3 technologies. Collaborate with distributed teams, follow best practices and design patterns, write technical documentation, resolve issues, and ensure scalability, reliability, and performance.

Design, build, and maintain secure, high-performance RESTful APIs and microservices using Java and Spring Boot. Collaborate with cross-functional teams, implement API security (OAuth2/JWT/OpenID Connect), optimize databases, integrate messaging systems, write unit/integration/API tests, participate in code reviews and architecture decisions, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.

Lead architecture and delivery of enterprise Java full-stack applications. Hands-on development with Java/Spring Boot, microservices, AWS cloud-native services, database tuning (Oracle/RDS), CI/CD pipelines, monitoring, and incident resolution. Mentor engineers, enforce code quality, run architectural reviews, and collaborate with product, DevOps, and security teams to ensure scalable, secure, high-availability solutions.

Design, build, and maintain scalable enterprise full-stack applications using Java, Spring Boot, microservices, and modern front-end frameworks. Implement cloud-based solutions on AWS, contribute to CI/CD and DevOps automation, optimize performance and security, and integrate AI-driven capabilities using Python and orchestration tools like LangChain and LangGraph.

Develop, maintain, and optimize backend services and APIs for a scalable healthcare platform using Node.js, Java, or .NET. Integrate third-party services, ensure performance, reliability, and security, collaborate with cross-functional teams, participate in code reviews, and work in an Agile environment to deliver high-quality server-side applications.

Design and implement Node.js/JavaScript solutions including REST/SOAP services, cryptography (X.509/CMP), PostgreSQL integration, and deployment on Unix/macOS with web servers (Apache, Nginx, Tomcat, JBoss). Collaborate using GitHub and tools like Hapi/Redis. Strong communication skills; 6-month engagement.

Develop and maintain Java-based enterprise applications using JPA/Hibernate, Spring, and REST. Analyze and document requirements, write and test code, deploy and integrate systems, evaluate vendor software, and enforce quality standards. Lead and mentor developers, create training materials, and communicate status to management while following Agile practices.

Design, develop, test, and implement Java/J2EE applications across full SDLC. Produce JUnit test cases, technical design documents, and integrate systems using WebSphere, RAD/Eclipse, JDBC, XML technologies. Work with business customers and Agile Scrum teams to analyze requirements and deliver SOX-compliant solutions.

Design and implement Java/J2EE enterprise applications using Spring and Hibernate. Translate functional/non-functional requirements to system requirements. Build REST and SOAP web services, perform PL/SQL development, and implement server-side components (Servlets, JSP, EJB). Use build and dev tools (Eclipse, Ant, SVN, SoapUI). Domain experience in Telecom required.

Design and implement Java/J2EE server-side applications. Translate functional and non-functional requirements into system requirements. Develop using Spring, Hibernate, REST/SOAP web services, PL/SQL, servlets/JSP, JDBC, EJB, and logging (log4j). Use build and dev tools (Eclipse, RAD, SoapUI, XML Spy, ANT, SVN/CVS). Telecom domain experience required.

Design, develop and implement Java/J2EE applications using Spring and Hibernate; build REST and SOAP web services; translate functional/non-functional requirements into system requirements; develop server-side components (Servlets, JSP, EJB, JDBC); write PL/SQL; use build and version tools (Eclipse, ANT, SVN/CVS); work within the Telecom domain.

Design, develop and implement Java/J2EE server-side applications using Spring/Hibernate. Build REST/SOAP web services, write PL/SQL, and use tools like Eclipse, ANT, SVN. Work in a telecom domain environment and translate functional requirements to system design.

Develop and implement Java/J2EE server-side applications using Spring/Hibernate, REST/SOAP web services, PL/SQL, and build tools. Translate functional requirements into system designs and work within the telecom domain.

Design and implement large-scale enterprise J2EE applications, translate functional/non-functional requirements to system specs, develop server-side Java components and UI using HTML5/jQuery/AngularJS, build REST/SOAP services, use Spring/Hibernate and PL/SQL, work in Agile, lead architecture for projects, collaborate with teams, interface with clients, and support global delivery with regular travel.