> Markdown version of [/jobs/ext/2253916-mid-java-api-developer](https://www.wearedevelopers.com/jobs/ext/2253916-mid-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 Java API Developer - **Company:** System One - **Location:** Pittsburgh, PA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Unit Testing, Software Design Documents, DevOps, Github, Java Architectures, Spring Framework, JSON, Microsoft SQL Server, MongoDB, Node.Js, OpenShift, Oracle (Applications), Swagger, Simple Object Access Protocol (SOAP), Systems Integration, Extensible Markup Language (XML), Spring-boot, Backend, Git, Containerization, AngularJS, Kubernetes, IBM UrbanCode Deploy, Apache Kafka, Restful APIs, Jenkins, Microservices - **Published:** August 26, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3365543156&tx=YT101TYI&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role At least 4+ years overall experience Java/J2EE development with REST API, Spring Boot, XML, JSON, Swagger . 4+ years of experience developing and consuming SOAP and REST web services for an operational/production environment . Work with API developers across the teams to build new API features at large-scale . Improve API standards and services . Experience working with OpenShift, Containerization and Microservices . 3+ years of GitHub, Jenkins and CI/CD server . Knowledge of client-side technologies like Node JS, Angular 8+ . Experience in Kubernetes, Apache Kafka and MongoDB. . Experience integrating Java based applications with Oracle / SQL Server . Hands on experience working REST API development using Spring Boot & Spring framework. . Experience coding to prevent hacking and other vulnerabilities. . Strong collaboration and communication skills within distributed project teams and in an Agile environment. . Excellent oral and written communication skills. ## Description This role must be performed in Pittsburgh, PA -or- Dallas, TX on the client site 5 days per week. For this role on this particular client engagement, employer sponsorship of immigration?related visa and/or green card status as part of the PERM process will not be available. Your future duties and responsibilities . Design, maintain and implementation of API, microservices and backend components . Work with API developers across the team to build new features at large scale . Improve API standards and services . Development and unit testing of Java RESTful services that integrates with external client systems . Working Knowledge and hands on experience in DEVOPs tools like Jenkins, uDeploy and GIT . Review Design Documents and provide feedback on approach and estimates . Creates technical designs for new systems, and/or modifications to existing systems. . Translates detailed requirements into functional system designs. . Ability to prioritize work and meet deadline and also establish and maintain effective working relationships with clients, project team members, supervisors, and employees from other departments. . Work closely with internal and external design, business, and technical counterparts . Excellent interpersonal skills including the ability to work closely with diverse personality types and understand technical issues. ## Related Videos - [API = Some REST and HTTP, right? 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