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Work Address: Boulder CO (Hybrid; would consider a remote worker (U.S.) for the right candidate that contains the required z/OS skills and technical knowledge.) Dress Code: Dress code is casual business attire. The successful candidate will be provided an opportunity to immediately contribute to zOS Mainframe related tasks and projects, as well as opportunities to utilize, increase, and share their technical knowledge and skills in the mainframe operating systems. The candidate will leverage their expertise of mainframe operating systems and strong problem-solving skills to upgrade systems, resolve system issues, and assist and educate users and other team members. The new team member will be expected to assume additional responsibilities as assigned. Experienced Systems programmer, not an application developer/programmer. The candidate needs to be a systems expert with experience. There will be no extensive lifting, standing, or walking. Parking is free. Successful candidate will be performing the tasks of a zOS systems programmer maintaining and upgrading the zOS Operating System and supporting users. Company is located in Boulder Colorado, is seeking an experienced zOS systems programmer (IBM Mainframe Systems technical skills and knowledge). * This role is for an experienced Systems programmer, not an application developer/programmer. The candidate needs to be a systems expert with experience. * Successful candidate will be performing the tasks of a zOS systems programmer maintaining and upgrading the zOS Operating System and supporting users. * This assignment is a hybrid position, located in Boulder Colorado (free parking), where the candidate may need to come on site periodically. * We would consider a remote worker (U.S.) for the right candidate that contains the required z/OS skills and technical knowledge. * Position requires U.S Citizenship. * Prefer Part time worker (consistent 3 days per week / 24 hours per week). Would consider full-time for the right candidate. * There will be no extensive lifting, standing, or walking. No driving is required as well. Dress code is casual business attire. No Covid mandate on vax. The experienced z/OS systems programmer candidate will join a small team of technical system experts who manage, upgrade, and support IBM zOS Mainframe systems. The Development Support team provides systems, expertise, and support to Development professionals who are responsible for multiple stages of development from requirements definition, architecture, implementation, and customer support for software and hardware print products. REQUIRED SKILLS: * Mainframe zOS systems software programming experience and expertise. * Experience working with hardware to include a basic understanding of FICON/ESCON connectivity, DASD architecture [alias (PAV) management, cryptographic coprocessors, data encryption techniques] and virtual (VTS) tape libraries. * zOS experience with Catalog Management, ISPF/SDSF, z/FS Filesystems, Unix System Services, RACF, JES parameters, SYS1.PARMLIB, SYS1.PROCLIB members. * zOS SYSPLEX management including couple dataset definition and coupling facilities. * Dataset/Storage/Disk/Tape management (allocation, backup, restore, etc.) including DFDSS, DFSMS storage constructs, DFHSM Mgmt/Cleanup, DFRMM, XCF, System Logger, etc. * Ability to debug and resolve Mainframe operating system software issues (across older to current z/OS levels). * Work well in a team environment. * Ability to work independently as needed. * Ability to teach and assist users and other team members. * Availability to work some weekend / off-shift coverage and maintenance windows. * Deep knowledge of zOS and JES System Programming. * RACF Administration Experience; Userids, RACF User Groups, Resources, KeyRings, etc. * IBM Software Installations: ServerPacs using zOSMF, CBPDO, any related IBM Software product installs and customization. PREFERRED SKILLS: VTAM and TCPIP, OSA and Virtual Interfaces, HiperSockets and VSWITCH System operator experience zOS experience with JES2 and JES3 zVM system experience Linux on z System zCX (z/OS Container Extensions) Linux on z/OS Experience providing z/VM hosting support for z/OS and z/VSE Guest systems. zVSE Mainframe systems software programming experience and knowledge DS8000 Disk Subsystem, FlashCopy, Tape Library RACF Security Experience using z/OSMF and Workflows * DFSMS Administration: ACS Routine modification through Activation; Construct modifications, additions (DataClass, MgmtClass,StorClass,StorGrp) * Familiar with iSeries would be a plus EDUCATION / CERTIFICATIONS: Bachelor's degree preferred with at least 5 -- 7 years of work experience, or equivalent zOS experience.