Influential Mainframer

Mainframe technology continues to evolve because of the dedicated professionals, educators, mentors, and innovators who drive it forward. We’re shining a spotlight on the individuals who are making waves—whether they’re advancing technology, mentoring new talent, sharing knowledge, championing modernization, or quietly keeping mission-critical systems running every day. These are the people shaping the future of mainframe. They come from all backgrounds and experience levels, but they all have one thing in common: they’re making a difference. Follow @Planet Mainframe and follow #pmfinfluentialmainframers to congratulate this year’s honorees, share your favorite stories, and spread the word.

Influential Mainframer – Peter Enrico

Apr 17, 2025 | influential-mainframers

With a career that began at IBM—where he helped design and develop cornerstone technologies like Workload Manager (WLM) and Resource Measurement Facility (RMF)—Peter Enrico has spent more than 40 years advancing the art and science of z/OS performance. Peter Enrico...

Influential Mainframer – Ezriel Gross

Apr 17, 2025 | influential-mainframers

Today we celebrate one of the most trusted technical voices in CICS education and performance tuning. Ezriel Gross Principal Solutions Advisor, Rocket Software New Jersey, USA Connect with Ezriel on: View the entire 2025 Influential Mainframers group here. Ezriel...

Influential Mainframer – Toine Michielse

Apr 16, 2025 | influential-mainframers

Today, we celebrate someone who’s bridging generations and platforms—showing that mainframe evolution starts with real-world experience. Toine Michielse Leader, Client Services Consulting, Broadcom Inc. Madrid, Spain Connect with Toine on: View the entire 2025...

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