> Markdown version of [/jobs/ext/3456202-associate-mainframe-operating-systems-programmer](https://www.wearedevelopers.com/jobs/ext/3456202-associate-mainframe-operating-systems-programmer). 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). --- # Associate Mainframe Operating Systems Programmer - **Company:** Fmr LLC - **Location:** Westlake, TX, United States (Remote available) - **Contract:** Internship / Graduate position - **Skills:** Java (Programming Language), Business Software, COBOL (Programming Language), Software Documentation, Disaster Recovery, Middleware, Job Control Language (JCL), Rexx (Programming Language), Python (Programming Language), Mainframes, System Software, Working Model 2D, Z/OS, Performance Monitor, Programming Languages - **Published:** September 2, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=0ac0f8aa0205044a ## About the Role * Basic understanding of operating systems concepts. * Knowledge of JCL (Job Control Language) and mainframe fundamentals is a plus. * Familiarity with programming languages such as COBOL, REXX, Python, or Java is advantageous. * Strong analytical and problem-solving skills. * Good communication and teamwork abilities. * Willingness to learn enterprise infrastructure technologies., * Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field. ## Description * Assist in the installation, configuration, and maintenance of IBM z/OS and related system software. * Monitor mainframe system health, performance, and availability. * Support system upgrades, patches, and maintenance activities. * Help troubleshoot operating system, storage, networking, and middleware issues. * Assist with automation and scheduling tools used in the mainframe environment. * Support disaster recovery and business continuity testing activities. * Create and maintain system documentation, procedures, and knowledge articles. * Collaborate with application, operations, and infrastructure teams to resolve incidents. * Participate in problem determination and root cause analysis under guidance from senior team members. * Ensure compliance with organizational security and operational standards.