Sr. Mainframe/Jave Developer
Zenius
- New Carrollton, MD
- Permanent
- Full-time
Location: New Carrollton, MD (Remote)
Client: Internal Revenue Service (IRS)
Employment Type: Full-Time (Position contingent on customer approval)
Clearance: Active MBIOverviewWe are seeking a highly skilled Sr. Mainframe/Java Developer to support our IRS client in New Carrollton, MD. The selected candidate will be responsible for the development, testing, and maintenance of enterprise-level software applications. This role requires expertise in both mainframe and Java development, and the ability to collaborate with government personnel and project teams in a dynamic environment.ResponsibilitiesThe Sr. Mainframe/Java Developer will:Maintain and enhance existing software programs by designing, developing, testing, and debugging applications using Java 11, SQL, and JCL.Translate business requirements into detailed program designs and specifications.Develop and deploy Java components or full JEE application functionality.Create test plans, perform unit, integration, and regression testing, and develop automated test scripts.Participate in design/code reviews and prepare release documentation.Maintain and upgrade source code, ensuring compliance with IRS development methodology.Develop custom adapters to integrate legacy systems with service-based framework infrastructure.Provide full life cycle support for applications on Z/OS and Red Hat Linux environments.Collaborate effectively with cross-functional teams in Agile sprints.Prepare documentation, diagrams, and technical reports as required.Qualifications RequiredBachelor s Degree from an accredited institution.Active IRS MBI clearance and IRS-issued laptop (laptop will be provided).Minimum of 7 years related experience in software development.At least 1 year of direct IRS experience in a similar role.Strong experience with Java 11/JEE, JCL, Java Batch, Mainframe development.Familiarity with Agile methodologies, CI/CD pipelines, Lambda expressions, Generics, and SOA principles.Proficiency in web services, messaging protocols (REST, RPC, SOAP, WS-*), schema design, and JMS.Strong communication, collaboration, and documentation skills.Demonstrated experience in performance tuning, optimization, and working with GOTS/COTS products.PreferredKnowledge of Assembler Language (ALC) and advanced JCL scripting.Experience with DB2/SQL, ENDEVOR, and IBM mainframe development tools.Familiarity with Red Hat Linux OS and enterprise application servers (Tomcat, WebLogic, WebSphere, JBoss).Experience with Drools BRMS, JBoss Middleware stack, or similar technologies.Knowledge of SOA implementation and integration with managed file transfer protocols (FTP, SFTP, HTTPS, TLS).Experience with Rational Team Concert and Rational Suite tools.Background in IRS Enterprise Life Cycle (ELC) processes, policies, and procedures.Experience with Spring JPA, Spring Batch, and big data technologies.Key SkillsJava 11 / JEE DevelopmentMainframe / JCL ProgrammingSQL / DB2 DevelopmentAgile / CI/CD PracticesWeb Services & SOAApplication Performance TuningCross-Functional Collaboration