Senior z/OS Administrator — Mainframe Reliability & Upgrades

TechDigital Group; Hebron Estates (KY); On-site; USD 110,000 - 150,000; Full time

Job summary

TechDigital Group seeks an experienced Mainframe z/OS Administrator in the United States to manage large-scale z/OS environments, JES, RACF and ISV products. The role includes troubleshooting, configuration, migrations, and performance tuning for 24x7 operations in a compliant enterprise setup.

Candidates should have strong knowledge of CICS, IMS/MQ, SMP/E, DB2 utilities, and mainframe monitoring tools, with excellent communication and documentation skills.

Qualifications

• Extensive hands-on with z/OS subsystems, JES and catalog management.
• Experience installing/upgrading CICS and related products on mainframe environments.
• Familiarity with ISV products for automation and monitoring (CA, BMC, Tivoli).
• Strong problem determination, root-cause analysis and performance tuning.

Responsibilities

• Troubleshoot technical issues and ensure high uptime per SLA.
• Install, configure and migrate mainframe software and upgrades.
• Perform root cause analysis and documentation of incidents and changes.
• Plan backups, 24x7 support strategies and disaster recovery.
• Monitor system performance with RMF/SMF and tuning tools.
• Collaborate on change management and automation initiatives.
• Support z/OS and ISV product h/w and s/w upgrades.

Skills

z/OS services and JES

Parallel Sysplex/GDPS

JCL

REXX

CLIST

Modify Assembler EXITS

z/OS hardware knowledge

LPAR/HMC

IMS/MQ Series

RACF

CICS and related products

ISV product support (CA-View, CA-1)

SMP/E/DB2 utilities

Tools

CA-View

CA-1 (Tape management)

BMC InControl

CA-7

SAS

MXG

CA-MICS

Strobe

Omegamon

RMF/SMF tooling

Job description

TechDigital Group seeks an experienced Mainframe z/OS Administrator in the United States to manage large-scale z/OS environments, JES, RACF and ISV products. The role includes troubleshooting, configuration, migrations, and performance tuning for 24x7 operations in a compliant enterprise setup.

Candidates should have strong knowledge of CICS, IMS/MQ, SMP/E, DB2 utilities, and mainframe monitoring tools, with excellent communication and documentation skills.