About

Join us as a Mainframe Performance Specialist, to support the z/OS Performance team in monitoring and improving the performance of Barclays’ mainframe systems. You’ll work across a broad range of Mainframe technologies to support system performance and reliability. This includes investigating infrastructure issues, using performance tools and platform features, contributing in-house code, and supporting diagnostic and scheduling activities. You’ll also represent the team in technical discussions and provide on-call support as part of a collaborative environment. To be successful as a Mainframe Performance Specialist, you should have experience with: IBM Mainframes, including TWS, CICS, IMS, MQ, DB2, and configuring System and LPAR settings on z15 onwards.Performance and observability tools such as Omegamon, RMF, SYSVIEW, SAS/MXG, Elastic, Grafana, and Workload Manager (WLM), along with scheduling tools, TSO utilities, and diagnostic tools.Creating in-house utilities using REXX. Investigating infrastructure issues and applying knowledge of the major incident process. Some other highly valued skills may include: Familiarity with Endevor and SMF housekeeping.Experience supporting Mainframe environments in financial services.Knowledge of DB2 performance tuning. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen strategic thinking and digital and technology, as well as job-specific technical skill. This role will be based in Knutsford. Purpose of the role To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable,