> Markdown version of [/jobs/ext/3849861-mainframe-application-developer](https://www.wearedevelopers.com/jobs/ext/3849861-mainframe-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). --- # Mainframe Application Developer - **Company:** Computer Task Group, Inc - **Location:** Beaverton, OR, United States - **Contract:** Temporary contract - **Skills:** Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Job Control Language (JCL), IBM Mainframe, Rexx (Programming Language), Mainframes, Pl/i, Software Engineering, Virtual Storage Access Methods, Z/OS, Tso/ispf, Information Technology - **Published:** October 21, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3462153729&tx=KK4343FFL&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 * IBM Mainframe z/OS, VSAM, JCL, REXX, TSO/ISPF, and mainframe tools. * Proficiency in COBOL, PL/1, or Assembler. * Experience with DB2 or IMS-DB and familiarity with CICS or IMS-DC. Experience: * Hands-on experience with mainframe application development, maintenance, troubleshooting, and support. Education: * Degree in Computer Science, Information Technology, or a related field preferred, or equivalent experience. Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required. ## Description * Develop, maintain, and support applications in an IBM Mainframe z/OS environment. * Troubleshoot application issues and provide application, production, and z/OS environment support. * Support mainframe databases and transaction processing systems.