Mainframe SRE
Description:
Mainframe Sre
The Mainframe SRE Lead 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 include:
Leading the Mainframe SRE team, providing technical direction, mentoring, and performance guidance
Owning the reliability, availability, and resilience of mainframe environments (z/OS and related subsystems)
Defining and implementing SRE practices such as SLIs, SLOs, SLAs, error budgets, and reliability metrics
Driving automation to reduce manual operations, improve recovery time, and enhance system stability
Overseeing monitoring, alerting, and observability for mainframe systems using modern and legacy tools
Leading incident management, root cause analysis (RCA), and post-incident reviews
Partnering with application development teams to improve reliability, performance, and deployment practices
Planning and executing capacity management, performance tuning, and workload optimization
Ensuring compliance with security, regulatory, and audit requirements
Leading disaster recovery (DR) planning, testing, and high-availability strategies
Championing continuous improvement, DevOps, and SRE culture within mainframe operations
Required qualifications include:
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