Senior Mainframe Site Reliability Engineer; SRE – Application Support
Job in
Columbus, Franklin County, Ohio, 43224, USA
Listed on 2026-02-12
Listing for:
Hallmark Global Solutions Ltd
Full Time
position Listed on 2026-02-12
Job specializations:
-
IT/Tech
Systems Engineer, Cloud Computing, IT Support, SRE/Site Reliability
Job Description & How to Apply Below
Job Title:
Senior Mainframe Site Reliability Engineer (SRE) – Application Support
Location:
Columbus, OH (4 Days Onsite)
- This is NOT a Mainframe Developer role
- This is a Mainframe Application Support / SRE role
- Candidate must have experience with APIs / Web APIs
Role
Summary:
The Senior Mainframe SRE is responsible for the stability, reliability, and performance of enterprise mainframe systems. This role focuses on application support, production reliability, automation, monitoring, and incident management
, using SRE best practices.
The role works closely with application, infrastructure, and operations teams to ensure high availability and quick recovery of critical systems.
Key Responsibilities- Support and ensure 24/7 reliability and availability of mainframe applications and systems
- Act as a senior point of contact for production support and major incidents
- Monitor system health, performance, and capacity
- Perform incident management, root cause analysis (RCA), and post-incident reviews
- Automate manual operational tasks to improve stability and recovery time
- Work with API/Web API integrations supporting mainframe applications
- Coordinate with development and infrastructure teams to improve system reliability
- Support disaster recovery (DR) planning, testing, and high availability
- Ensure compliance with security, audit, and regulatory requirements
- Drive continuous improvement and SRE best practices in mainframe operations
- 10+ years of experience in Mainframe Application Support / Operations
- Strong hands‑on experience with IBM z/OS
- Experience with mainframe technologies:
- CICS, IMS, DB2
- JES2/JES3
- MQ, SMF, SDSF
- Experience supporting APIs / Web APIs integrated with mainframe systems
- Strong background in production support and incident management
- Experience with performance tuning and capacity planning
- Automation/scripting experience:
REXX, JCL, CLIST, Python
, or similar - Experience with monitoring and scheduling tools:
- OMEGAMON, CA/BMC tools, Control‑M
- Experience applying SRE practices in mainframe or hybrid environments
- Exposure to Dev Ops and automation frameworks
- Knowledge of Linux on Z or cloud integration
- Prior technical lead or team lead experience
Position Requirements
10+ Years
work experience
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
Search for further Jobs Here:
×