Karel Zimmer is a seasoned DevOps Engineer specializing in Linux with nine years in his current DevOps role and over two decades at Rabobank across DBAs, z/OS systems programming and platform engineering. He brings deep operational expertise from database performance and tooling to IBM z Systems (z/OS, USS, MQ, DB2) and modern Linux deployments, bridging legacy mainframe environments with contemporary infrastructure. Linux-certified and passionately focused on sysadmin craft, he excels at stabilizing production systems and automating repeatable operations. Based in the Randstad, he combines institutional knowledge of large financial IT operations with hands-on troubleshooting and configuration skills. An understated strength is his long history of cross-platform work—COBOL/IMS/DB2 to Sybase and UNIX—which gives him rare insight into migration and integration challenges.
9 years of coding experience
Batchelor of Science, Engineering, Batchelor of Science, Engineering at HBO University
Scripts for installing and maintaining Debian and Debian-based system like Ubuntu (Dutch).
Contributions:1762 commits, 2 PRs, 4303 pushes in 1 year 5 months
debian-basedinstallinglinuxdebian-linuxdebian
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