> Markdown version of [/jobs/ext/3901719-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/3901719-mainframe-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 Developer - **Company:** CGI Group Inc. - **Location:** UK - **Experience:** Experienced - **Salary:** £68,317.0 - **Contract:** Permanent contract - **Skills:** Software Applications, Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Linux, Job Control Language (JCL), IBM System Z, Mainframes, Software Tools, Software Engineering, Virtual Storage Access Methods, Z/OS, Ibm Z/vm, Programming Languages - **Published:** October 24, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5210480304 ## About the Role * Strong knowledge of COBOL, JCL, CICS, DB2 and other mainframe technologies * Excellent problem-solving and troubleshooting * Experience with mainframe software development tools and platforms (z/OS, z/VM, z/Linux, IBM System z) * Excellent verbal and written communication skills * Creating high-performance, mission-critical applications * Analyzing user requirements and developing software solutions * Ensuring software applications meet all performance and security requirements * Working with other developers to create high-performance, scalable applications * Researching new technologies and software development trends * Providing technical support and troubleshooting * Writing technical documentation Required Qualifications To Be Successful In This Role Strong knowledge of VSAM, COBOL, JCL, CICS, DB2 and other mainframe technologies ## Description Mainframe developers are responsible for the development, maintenance and support of software applications that run on mainframe computers. They work with a variety of programming languages, software tools and platforms to create high-performance, mission-critical applications. Mainframe developers typically work in large organizations that rely heavily on mainframe systems for their business operations. They may work in a variety of industries, including banking, finance, insurance, healthcare, manufacturing, and government.