> Markdown version of [/jobs/ext/4563235-java-application-developer](https://www.wearedevelopers.com/jobs/ext/4563235-java-application-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). --- # Java Application Developer - **Company:** Apex Systems LLC - **Location:** Newark, DE, United States - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Apache Tomcat, Server Applications, Application Performance Management, Oracle WebLogic Server, Continuous Integration, Relational Databases, Software Design Patterns, Programming Tools, Ehcache, IBM Websphere Application Server, Java Architecture for XML Binding, WildFly (JBoss AS), Apache JMeter, Junit, Apache Maven, MySQL, Object-Oriented Software Development, Oracle (Applications), Performance Tuning, Public Key Infrastructure, Release Management, Distributed Caching, SoapUI, SQL Databases, Testng, Extensible Markup Language (XML), Apex Code, SOAPAPI, Information Technology, Dynatrace, Jenkins - **Published:** November 4, 2026 - **Apply:** https://www.juju.com/job/7_2CD6C22F8FC627F31A12E4A84C1D487F ## About the Role The work arrangement is a hybrid schedule, requiring a minimum of three days onsite per week.Key ResponsibilitiesDevelop and maintain Java applications.Provide triage and support for lower-level environments (LLE).Support application releases and deployment processes.Design new components and apply design patterns effectively.Develop REST and SOAP web services and web applications.Work with distributed caching frameworks and XML processing tools.Ensure application performance through tuning and profiling.Collaborate with teams located across multiple time zones.Required QualificationsTechnical Skills:Core Java and solid Object-Oriented Programming (OOP) skills.Proven design expertise, including Design Patterns and UML.J2EE experience with application servers like Websphere, Weblogic, JBoss, or Apache Tomcat.* Experience with Spring frameworks, including Core Spring, Spring Integration, and Spring AOP.Proficiency in REST and SOAP web service development.Knowledge of JPDA/Hibernate.Experience with distributed caching frameworks such as ehCache or Websphere eXtreme Scale.Familiarity with encryption and Public Key Infrastructure (PKI).Experience with XML processing and binding frameworks like JAXB, Xstream, or Stax.Preferred QualificationsHands-on experience with UNIX/Linux environments.Experience with relational databases such as Oracle, MySQL, or SQL Server.Background in producing high-transaction volume services or applications.Experience with performance tuning and application profiling.Familiarity with Continuous Integration tools like Jenkins/Hudson.Experience with development tools such as JMeter, SOAPUI, JUnit, TestNG, DynaTrace, or JProbe.Knowledge of Maven and repositories like Nexus.Ability to work independently in a fast-paced environment.Everforth Apex is a world-class IT services company that serves thousands of clients across the globe.