Top Java Developer Jobs in Denver & Boulder, CO

Design and implement scalable microservices and customer/internal APIs. Lead technical specification, development, integration, testing, and release. Optimize performance, refactor code, collaborate with stakeholders, mentor engineers, and ensure reliable, maintainable solutions across the platform.

Lead design and implementation of scalable, cloud-native Java data platforms. Mentor teams, optimize data pipelines and canonical models, drive architecture and quality, collaborate with product and customers, and ensure high-performance, secure enterprise solutions.

Maintain and enhance U.S. Bank's Customer Information System and Hogan platforms. Design, develop, test, and operate mainframe services/APIs, diagnose and resolve incidents, perform code reviews, ensure security/compliance, collaborate with business and cross-functional teams, mentor peers, and participate in Scrum-driven delivery.

Design, develop, test and maintain enterprise Java/J2EE web applications using Spring, Hibernate and related frameworks. Work across SDLC in Agile/Waterfall, implement front-end components (Angular/Bootstrap), integrate messaging (JMS/MQ) and databases (Oracle/SQL Server/MySQL), use build and CI tools, and participate in estimation, code reviews and deployment.

Design, develop, test and maintain Java/J2EE web applications and backend services using Spring, Hibernate, messaging and RDBMS. Participate in requirements analysis, architecture and Agile ceremonies, write SQL and stored procedures, build/deploy with ANT/Maven, and use testing and CI tools to ensure high-quality deliverables.

Senior Java ATG developer responsible for full-stack development using ATG, Java/J2EE, web services, front-end technologies, and frameworks. Work includes database integration with Oracle/JDBC/PL-SQL, microservices and messaging (RabbitMQ), cloud (AWS), iOS/Swift exposure, participating across the SDLC, debugging, and collaborating with stakeholders and cross-functional teams.

Senior Java Developer responsible for designing, implementing, and testing Java/J2EE web applications using Spring, Hibernate, JMS/MQ, and SQL. Work includes front-end integration (Angular/Bootstrap), application server deployment, database development, unit and integration testing, and participating in Agile ceremonies and design sessions.

Develop and maintain enterprise-class Java backend software for centralized management of hyperconverged data center products. Collaborate with cross-functional teams in an Agile/Scrum environment, integrate core product components, work with VMware and cloud automation tooling, and drive software design, quality, and supportability.

The Senior Full Stack Java Developer will design and maintain enterprise applications using Java and modern front-end technologies while collaborating in Agile teams and mentoring junior developers.

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.

Design, implement, test, and maintain scalable Java/J2EE microservices using Spring technologies. Collaborate with architects, follow SDLC, perform unit/system testing, troubleshoot distributed cloud applications, and work in Agile teams to meet enterprise performance and security standards.

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, maintain, and deploy Java-based applications using Spring MVC and microservices. Diagnose and fix bugs and performance issues, design scalable systems, use CI/CD and version control, follow security guidelines, and communicate progress with project managers.

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.

Design, develop and maintain Java/Scala and Spark-based frameworks and data processing solutions. Implement Spark Streaming and Spark SQL, participate in design and architecture reviews, follow full software development and project life cycles, collaborate with global delivery teams, and work with ancillary technologies (Maven, Git, Hadoop, Kafka, AWS, Docker, Hibernate). Cable/media/video domain experience is a plus.

Develop and maintain Java/J2EE web applications using Spring, JSP and microservices. Implement CI/CD pipelines, deploy to Tomcat/WebLogic, work within Cable/MSO domain, collaborate in global delivery teams, and follow SDLC practices.

Develop and maintain Java/J2EE enterprise applications using Spring, Hibernate, Web Services, and Oracle/PL-SQL. Participate in design/architecture reviews, requirements elicitation, and SDLC activities. Work with CI tools, version control, and QA processes in a financial services global delivery environment.

Senior Java developer responsible for designing, developing, and deploying Java/J2EE web applications and microservices. Work includes SOAP/REST web services, CI/CD, Tomcat/WebLogic deployments, JDBC/Hibernate/iBatis integration, performance tuning, and supporting assessment/design/code/build/deploy phases, primarily for US cable MSO IT systems.

Develop and maintain Java/J2EE applications using Spring, JSP and microservices. Implement CI/CD with Jenkins, write unit tests, and deploy to Tomcat/WebLogic. Work within Cable/Media domain, collaborate with global teams, and follow SDLC processes to deliver application enhancements.

Develop and maintain Java/J2EE web applications and microservices. Work with Spring, JSP, Tomcat/WebLogic, CI/CD pipelines and testing frameworks. Collaborate with global teams and stakeholders in the Cable/Media domain to design, deploy, and enhance enterprise systems.

Develop and integrate enterprise applications using MuleSoft and Java/JEE. Design/implement web services (SOAP/REST), transform data (XSLT/XML), work with Apache Camel/Spring Integration, coordinate requirements and project tasks, and support consulting engagements that may require travel.

Design, develop, and maintain Java/J2EE backend APIs and services using REST/SOAP, Spring, Jersey, and Hibernate. Build scalable, multi-threaded distributed applications, perform unit testing and code reviews, and translate business requirements into technical designs. Collaborate in SDLC and API lifecycle activities using API tooling (Swagger/RAML) and common application servers (Tomcat).

Develop and maintain Java/J2EE web applications and microservices using Spring, JSP, Tomcat/WebLogic. Implement CI/CD pipelines, follow SDLC, collaborate with global teams, and support Cable/MSO domain solutions.

Design, develop, and maintain Java/J2EE REST APIs and web applications using Spring, Jersey, Hibernate, SQL, and frontend frameworks. Build scalable, multi-threaded, secure distributed systems, implement API authentication (OAuth2), use API tooling (Swagger/RAML), perform unit testing and code reviews, and translate business requirements into technical designs in a global delivery environment.

Develop and maintain Java/J2EE APIs and applications using Spring, Jersey, Hibernate and frontend frameworks. Design scalable, multi-threaded, secure systems, perform unit testing and code reviews, translate business requirements into technical solutions, and work in a global delivery environment.