SRE Application Support (Mainframe, AIX, OnDemand)

Toronto, Ontario, Canada • Posted March 21, 2026

Job Type: Full-time
Location: Toronto, Ontario
Posted: March 21, 2026
Category: Computer Occupations
Application Deadline: April 30, 2026

Role Description


Job Description:

Responsibilities:
  • Provide Level 2 application support for critical banking applications running on Mainframe AIX and OnDemand platforms.
  • Monitor application health system performance and batch processing to ensure 24x7 availability and reliability.
  • Troubleshoot and resolve production incidents perform root cause analysis RCA and implement preventive measures.
  • Support Mainframe batch jobs scheduling and OnDemand report processing.
  • Work closely with development infrastructure and operations teams to ensure smooth releases and deployments,
  • Participate in incident management problem management and change management processes.
  • Drive SRE best practices such as automation resilience monitoring and operational excellence.
  • Create and maintain runbooks SOPs and operational documentation.
  • Provide on call support as part of a rotational support model.
  • Req...

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