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.
Type: Part-Time (Preferred: 3 days/week, ~24 hours/week)
Client is seeking a highly experienced and self-sufficient z/OS Systems Programmer to join our Development Support team in Boulder, Colorado. This is not a role for an operator or application developer. We are looking for an expert in IBM z/OS mainframe systems—someone who can independently manage, upgrade, and troubleshoot complex system environments without relying on others for core z/OS tasks. You will be joining a small, focused team of senior technical professionals who support development engineers working across the full lifecycle of software products. This role offers immediate opportunities to contribute meaningfully to z/OS projects and to share your technical expertise.
Knowledge and skill to:
* Independently maintain, upgrade, and support IBM z/OS operating systems.
* Provide expert-level troubleshooting and resolution of system-level issues.
* Perform advanced system programming tasks including RACF administration and IBM software installations.
* Educate and assist users and team members on z/OS capabilities and best practices.
* Participate in scheduled maintenance windows, including occasional off-hours or weekend work.
Required Expertise:
* Extensive hands-on experience with z/OS systems programming (not operations or development).
* Expert knowledge and experience of:
+ Catalog management, ISPF/SDSF, z/FS, Unix System Services.
+ JES2/JES3, SYS1.PARMLIB, SYS1.PROCLIB.
+ Configuration of couple datasets.
+ RACF administration (User IDs, Groups, Certificates, Resources, KeyRings).
+ IBM software installation via ServerPac, z/OSMF, CBPDO.
+ DFSMS, DFHSM, DFDSS, DFRMM, System Logger, XCF.
+ DASD architecture, FICON/ESCON, cryptographic coprocessors, VTS.
* Proven ability to work independently and take full ownership of z/OS tasks.
* Strong communication and mentoring skills.
Preferred Skills:
* VTAM, TCP/IP, OSA
* z/VM systems programming.
* Linux on z Systems, zCX (Container Extensions).
* DS8000, FlashCopy, tape libraries.
* DFSMS ACS routine and construct management.
Work Environment:
* Hybrid role based in Boulder, CO with free parking.
* Remote work (U.S. only) considered for highly qualified candidates.
* Casual business attire.
* No COVID vaccination mandate.
* No physical labor required (no lifting, standing, or driving).
Education & Experience:
Minimum 5–7 years of direct z/OS systems programming experience (or equivalent).
Responsibilities:
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 to support, assist, and educate users and other team members. The new team member will be expected to assume additional responsibilities as assigned. Must work effectively in a team environment, but also be able to carry out tasks independently while working alongside industry experts
