I am a systems programmer and consultant. I have been working for VBT Software Co. My primary area of expertise is mainframe cybersecurity, specifically RACF and zSecure.
"I'm particularly excited about z/OS and its integration with modern technologies like containerization and cloud environments. The way IBM has evolved the mainframe to support technologies like z/OS Container Extensions (zCX) and OpenShift on Z is fascinating. It combines the reliability and performance of traditional mainframes with the agility of modern DevOps practices.
Additionally, I'm very interested in learning more about RACF (Resource Access Control Facility) and zSecure. Security is more important than ever, and zSecure and RACF's fine-grained access control is a powerful model that I'd like to master, especially in regulated industries like finance or healthcare.
Overall, the intersection of legacy systems with modern hybrid cloud and automation tools is what excites me the most. I believe there's a lot of potential to bring new efficiency and scalability to long-standing mainframe environments."
"A fun fact about me is that I love solving logic puzzles and brainteasers in my free time-anything from escape room games to Sudoku and cryptic crosswords. I think it's a fun way to keep my problem-solving skills sharp, and it's surprisingly similar to debugging code or troubleshooting systems!"
"A fun fact about me is that I practice calligraphy in my free time. I love the focus and precision it requires-it's a relaxing yet creative hobby that lets me slow down and appreciate the beauty in details. It also helps me stay patient and disciplined, which carries over into my work with code and systems."
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iyi çalışmalar, saygılar / Regards
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Kayhan TANRIVERİR
Sn. Systems Programmer & Consultant
VBT Yazılım A.Ş
www.vbt.com.tr------------------------------
Original Message:
Sent: Thu August 28, 2025 10:41 AM
From: Derez Lusk
Subject: Introductions please ..
Hello
My name is Derez Lusk, I am a Mainframe system's analyst at BlueCross BlueShield of Illinois (HCSC) here in Chicago. I have the luxury (ha ha) of being responsible for triaging CICS abends using QUERY MONITOR on both mainframe and GUI. using IBM Debugger to step through programs. Using IBM Application Discovery (ADDI) and Watson Code Assistant for Z to evaluate mainframe code to understand business requirements and guide Application Developers on where to update code for new functionality or fix bugs. I also write DB2 programs in batch as well as online . IBM CICS for Zowe explorer in VSCODE as well as other essential plugins. Been in this industry for over 40 years . I love Skydiving and would love to try Squireling one day.
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Derez Lusk
Systems Analyst
Blue Cross Blue Shield of Illinois, Texas, Oklahoma, New Mexico and Montana (HCSC)
Chicago IL
1-312-653-7378
Original Message:
Sent: Wed April 09, 2025 02:42 PM
From: Shari Chiara
Subject: Introductions please ..
Our New to Z Group has been growing, and I thought it provided an opportunity for us to get to know each other a little better.
- What is your job role?
- How long have you been working on the mainframe?
- What mainframe technology are you passionate about, or excited to learn more about?
- Share a fun fact about yourself, or your favorite hobby.
I'm looking forward to learning more about each of you.
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Shari Chiara
Program Manager, IBM Champions and Community - IBM Z and LinuxONE
IBM
Charlotte NC
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