Who am I

I’m a mainframe developer with a sysprog experience in the past.

What I Do

My focus at work is primarily on HLASM and Java, combining the power of mainframe assembler with modern application development.

Why This Blog

This space serves two purposes:

First, it’s a resource for mainframe beginners — a place where I can share practical insights, troubleshooting tips, and lessons learned from working with z/OS. I believe mainframe community benefits when we share knowledge, and I want to contribute to lowering the barrier for newcomers.

Second, it’s a window into my projects and interests outside of work.

Beyond the Mainframe

When I’m not working, you’ll find me:

• Building and Making – I like DIY projects and 3D printing. I recently built a Ratrig VCore 4, and I’ll be posting further printer upgrades and modifications.
• Electronics, IoT devices, smart home automation projects.
• Working on cars – My current project is a E36 with M52B28 swap. I believe it’s one of the best platforms to start your own project car because of power/weight/steering and cost :)
• Programming – I like solving problems with code, whether it’s for work, home automation, or just exploring new stuff.
• Game consoles - I have a small collection of various consoles (stock and modded) and I plan to post about new discoveries and mods.

What to Expect

You’ll find technical articles about z/OS, development alongside project logs from my workshop and garage. Some posts will help you troubleshoot z/OS errors; other posts may help you with 3D printing, DIY projects etc. If you’re here to learn about mainframes, welcome. If you’re here because you share any of my other interests, even better. Feel free to reach out if you have any questions — I’m always happy to help -my personal email is irrdbu00@gmail.com