Senior Mainframe Developer

Senior Mainframe Developer **Req number:** R6672 **Employment type:** Full time **Worksite flexibility:** Hybrid **Who we are** CAI is a global technology services firm with over 8,500 associates worldwide and a yearly revenue of $1 billion+. We have over 40 years of excellence in uniting talent and technology to power the possible for our clients, colleagues, and communities. As a privately held company, we have the freedom and focus to do what is right-whatever it takes. Our tailor-made solutions create lasting results across the public and commercial sectors, and we are trailblazers in bringing neurodiversity to the enterprise. **Job Summary** We are looking for a motivated Senior Mainframe Developer ready to take us to the next level! If you have 5+ years mainframe development, strong knowledge of IBM z/OS, and are looking for your next career move, apply now. **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. **What You'll Do** + 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 **What You'll Need** Required: + 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 **Physical Demands** + 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 \#LI-KW1 **Reasonable accommodation statement** If you require a reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employment selection process, please direct your inquiries to [email protected] or (888) 824 - 8111. $85p/h - $92p/h The pay range for this position is listed above. Exact compensation may vary based on several factors, including location, experience, and education. Benefit packages include medical, dental, and vision insurance, as well as 401k retirement account access. Employees in this role may also be entitled to paid sick leave and/or other paid time off as provided by applicable law.