> Markdown version of [/jobs/ext/4549744-mid-level-java-api-developer](https://www.wearedevelopers.com/jobs/ext/4549744-mid-level-java-api-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mid-Level Java API Developer - **Company:** Mountain LTD - **Location:** Pittsburgh, PA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Applications Architecture, Unit Testing, Code Review, Continuous Integration, DevOps, Github, Spring Framework, JSON, Microsoft SQL Server, MongoDB, Node.Js, OpenShift, Oracle (Applications), Performance Tuning, Swagger, Simple Object Access Protocol (SOAP), Software Engineering, Systems Integration, Extensible Markup Language (XML), Openapi, Java Application Server, Enterprise Software Applications, Spring-boot, Software Security, Backend, Git, Containerization, AngularJS, Kubernetes, IBM UrbanCode Deploy, Apache Kafka, Front End Software Development, Api Design, Restful APIs, Jenkins, Microservices - **Published:** November 3, 2026 - **Apply:** https://www.dice.com/job-detail/f876792f-934a-479f-8ae4-e3e91fc67b0d ## About the Role * 4+ years of experience in Java/J2EE development. * Strong experience with REST APIs, Spring Boot, Spring Framework, XML, JSON, and Swagger/OpenAPI. * 4+ years of experience developing and consuming SOAP and REST web services in production environments. * Experience building APIs and microservices in large-scale enterprise environments. * Experience with OpenShift, containerization, and microservices architecture. * 3+ years of experience using GitHub, Jenkins, and CI/CD tools. * Knowledge of front-end technologies such as Node.js and Angular (version 8+ preferred). * Experience with Kubernetes, Apache Kafka, and MongoDB. * Experience integrating Java applications with Oracle and/or SQL Server databases. * Hands-on experience developing secure REST APIs and implementing application security best practices. * Strong understanding of software development lifecycle methodologies and Agile practices. * Excellent collaboration, communication, and problem-solving skills. * Strong verbal and written communication skills. Preferred Skills * Enterprise application development experience. * Experience working in highly regulated or large-scale environments. * Strong troubleshooting and performance optimization capabilities. * Exposure to cloud-native technologies and modern application architecture patterns. ## Description * Design, develop, maintain, and implement APIs, microservices, and backend components. * Collaborate with development teams to build and enhance API features at scale. * Improve API standards, performance, and service quality. * Develop and unit test Java-based RESTful services that integrate with external systems. * Utilize DevOps tools including Jenkins, uDeploy, Git, and CI/CD pipelines. * Review technical design documents and provide feedback on solutions, estimates, and implementation approaches. * Create technical designs for new applications and enhancements to existing systems. * Translate business and functional requirements into scalable system designs. * Prioritize work effectively and meet project deadlines. * Collaborate closely with business stakeholders, architects, developers, and external partners. * Research and recommend frameworks, libraries, and tools to streamline development efforts. * Participate in Agile development processes and code reviews.