Mainframe Systems Programmer

Job Summary: The Mainframe Systems Programmer will play a crucial role in maintaining and upgrading the zOS Operating System and supporting users. This experienced systems programmer will work alongside a small team of technical experts to provide systems support, troubleshoot issues, and assist in upgrading the mainframe operating systems. The role offers an opportunity to apply and expand technical knowledge in a dynamic, team-oriented environment, with potential for occasional remote work. Key Responsibilities: • zOS Systems Programming: Maintain, upgrade, and support the zOS Operating System, ensuring optimal performance and reliability. • Hardware and Software Management: Work with hardware, including basic understanding of FICON/ESCON connectivity, DASD architecture, and cryptographic coprocessors. • zOS Experience: Manage catalogs, ISPF/SDSF, Unix System Services, RACF, and JES parameters; handle SYS1.PARMLIB and SYS1.PROCLIB members. • SYSPLEX Management: Manage zOS SYSPLEX including dataset definitions and coupling facilities. • Storage & Tape Management: Oversee Dataset/Storage/Disk/Tape management including tasks like allocation, backup, restore, and the use of tools like DFDSS and DFSMS. • Problem Resolution: Debug and resolve mainframe OS issues, supporting various z/OS levels from older to current versions. • Teaching & Mentoring: Assist in educating users and team members on zOS systems and processes. • Weekend / Off-Shift Coverage: Provide coverage during weekends and maintenance windows as needed. Required Qualifications: Experience & Skills: • Expertise in Mainframe zOS systems programming, including installation and maintenance of zOS and IBM software. • Proficiency in zOS catalog management, ISPF/SDSF, Unix System Services, RACF, JES parameters, and system logs. • Strong experience in dataset/storage/tape management using tools like DFDSS, DFSMS, and DFHSM. • Ability to debug and resolve mainframe operating system software issues (across multiple z/OS levels). • Experience with RACF administration for userids, user groups, and resource management. • Experience in installing IBM Software products using zOSMF and CBPDO. • Ability to work effectively in a team environment and independently as needed. • Preferred Qualifications: Additional zOS Expertise: • VTAM, TCPIP, OSA, Virtual Interfaces, HiperSockets, and VSWITCH. • Experience with JES2 and JES3 systems. • zVM system experience, including support for z/OS and z/VSE Guest systems. • Experience with Linux on z Systems and zCX (z/OS Container Extensions). • Familiarity with DS8000 Disk Subsystem, FlashCopy, and Tape Library management. • Experience with z/OSMF and related workflows. • iSeries knowledge would be a plus. Education & Certifications: • Bachelor's degree preferred with at least 5-7 years of work experience in zOS systems programming or equivalent experience. Working Conditions: • The position is hybrid, with the possibility of remote work for candidates possessing the required z/OS skills and technical knowledge. • Free parking is available at the Boulder, Colorado location. • The position requires the ability to work on-site periodically or as needed. Education: Bachelors Degree Company DescriptionCompunnel Inc., established in 1994; is a leading provider of Staffing, IT/Software, e-Learning/Training, Business Intelligence, and Cloud Solutions. A leader in contingent and permanent workforce solutions, we also provide temp-to-hire staffing, project-based/SOW staffing, and payroll services to our esteemed clientele which includes Fortune 500 companies of diverse industry segments. Ranked as one of the largest staffing firms in the US which is our primary service market; we also have a significant presence in Europe and Asia. As a national service provider in the US, we are serving our customers all major states and regions; thereby generating numerous job opportunities for prospective employees in their preferred locations of choice. We have witnessed multi-fold YOY growth, and continuously adding a large pool of talented resources to our employee base every year. Our extensive experience in hiring professionals of multiple in-demand skill sets (IT, Engineering, Healthcare, Admin-Clerical, Finance, Professional, Light Industrial, etc.) further makes Compunnel a wider and preferred platform for people to pursue their careers in the US. We welcome people from all walks of life and cultures, and we support workforce diversity by providing equal employment opportunities to people without any discrimination based on race, color, gender, religion, national/ethnic region, disability, or any other basis. Apply Job!