Mainframe SRE

NOTES: this is mainly Mainframe production support look for someone who is a experienced Mainframe guy with SRE principles or Devops.

Job Title: Mainframe Site Reliability Engineering (SRE)

Location- Columbus Ohio (4 days onsite)

4 days in office- ColumbusOhio

Look for locals since a backout already happened

Role Summary

The Mainframe SRE is responsible for ensuring the reliability availability performance and scalability of enterprise mainframe platforms. This role blends traditional mainframe engineering with modern SRE principles focusing on automation observability incident management and continuous improvement. The lead will guide a team of engineers while partnering closely with application infrastructure and operations teams.

Key Responsibilities

• Lead the Mainframe SRE team providing technical direction mentoring and performance guidance
• Own the reliability availability and resilience of mainframe environments (z/OS and related subsystems)
• Define and implement SRE practices such as SLIs SLOs SLAs error budgets and reliability metrics
• Drive automation to reduce manual operations improve recovery time and enhance system stability
• Oversee monitoring alerting and observability for mainframe systems using modern and legacy tools
• Lead incident management root cause analysis (RCA) and post-incident reviews
• Partner with application development teams to improve reliability performance and deployment practices
• Plan and execute capacity management performance tuning and workload optimization
• Ensure compliance with security regulatory and audit requirements
• Lead disaster recovery (DR) planning testing and high-availability strategies
• Champion continuous improvement DevOps and SRE culture within mainframe operations

Required Qualifications

• 10 years of experience in mainframe systems engineering or operations
• Strong hands-on expertise with IBM z/OS
• Experience with core mainframe components such as:
  • CICS IMS DB2
  • JES2/JES3
  • MQ SMF SDSF

• Solid understanding of mainframe performance tuning and capacity planning
• Experience leading production support and managing major incidents
• Strong scripting and automation skills (REXX JCL CLIST Python or equivalent)
• Familiarity with monitoring and scheduling tools (e.g. OMEGAMON CA/BMC tools Control-M)

Preferred Qualifications

• Experience applying SRE principles in a mainframe or hybrid (mainframe distributed) environment
• Exposure to DevOps CI/CD and automation frameworks
• Knowledge of Linux on Z and cloud integration patterns
• Experience with resilience engineering chaos testing or fault injection concepts
• Prior people-lead or technical-lead experience