Mark Zelden is an Advisor System Engineer and z/OS Team Lead at DXC Technology, bringing over 35 years of expertise in systems programming and consulting for corporate IT organizations. They are ITIL V3 certified and recognized as a leader in the MVS-OS/390-z/OS operating environment. Mark has held positions ranging from Senior Software Project Specialist to Sr. Consultant across various companies, including Zurich Insurance and DTA. They have authored utility programs featured on the CBT tape and contributed articles to industry publications. Currently, Mark runs Zelden Consulting Services, focusing on z/OS and OS/390 systems programming.
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