Job Description: Responsible for the design and maintenance of the operating environment that provides the technology, stability, and power to meet the Firm's z-platform computing requirements. Skills Required: • Expert in zOS internals • Self-motivated/able to work autonomously • Strong Catalog management Knowledge and experience • Excellent trouble shooting skills • Able to work in a stressed situation like production system outage • Strong USS/OMVS skills • Experience with z/OS and ISV software installations • Excellent Testing skills (design tests to validate software functionality, robustness, performance) • HCD/Hardware knowledge • REXX experience • Weekend support and on-call rotation • zOSMF, rest APIs, Kafka, LinuxOne, ansibles, python and other new zos technologies is a plus • Assembler skills for usermods maintenance and dump reading are desirable but not mandatory Attributes: • Self-motivated individual and a team player • Outstanding researcher/investigator with outside the box line of thought • Good verbal and written English communications skills • At least 10 years of relevant experience