Senior Mainframe Developer

Job Description

We are seeking an experienced Senior Mainframe Developer with deep expertise in I/O configuration management to support our IBM Z environment. This hands‑on role focuses on configuration delivery, ensuring environment stability, and implementing project‑based infrastructure changes. This will be a full‑time contract opportunity and be hybrid onsite in Trenton, NJ.

• Configure and manage mainframe I/O definitions using Hardware Configuration Definition (HCD)
• Generate and implement IOCDS images and coordinate activations across logical partitions
• Analyze and update existing configurations to support hardware changes, migrations, and upgrades
• Troubleshoot I/O pathing, device connectivity, and configuration discrepancies
• Collaborate with internal teams (z/OS systems, storage, network, hardware engineering) to ensure alignment between logical and physical configurations
• Maintain accurate configuration documentation and provide knowledge transfer to permanent staff

• Minimum of 5 years of experience defining and maintaining I/O configurations for IBM z/OS systems
• Proficient in building and managing IOCDS datasets using HCD and IOCP tools
• Strong knowledge of IBM z/OS operating system internals
• Hands‑on experience with POR (Power‑On Reset) configuration activations and system startups
• Expertise in troubleshooting and resolving complex I/O configuration issues
• Familiarity with channel paths, control units, and device definitions
• Excellent documentation and communication skills
• Knowledge of Sysplex configurations and dynamic I/O reconfiguration
• Experience in capacity planning and hardware upgrades
• Familiarity with disaster recovery planning for I/O configurations

• Ability to safely and successfully perform the essential job functions consistent with the ADA and other federal, state, and local standards
• Sedentary work that involves sitting or remaining stationary most of the time with occasional need to move around the office to attend meetings, etc.
• Ability to conduct repetitive tasks on a computer, utilizing a mouse, keyboard, and monitor

While others say it, we do it: we care. We have great people and we do great work. Just as importantly, we have great relationships with an impressive clientele. Over 1,000 talented, diverse, and career‑minded professionals are carving out their role and experiencing a good mix of challenges and opportunities – and we’re rooting for them along the way, every day.

For more, click:

Mindteck is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, sex, sexual orientation, gender identity, age, status as a protected veteran, status as a qualified individual with a disability, or any other trait protected by law.