Senior Mainframe Engineer; CICS

Senior Mainframe Engineer (CICS) page is loaded## Senior Mainframe Engineer (CICS) remote type:
Hybrid locations:
Belfast 10 Mays Meadow:
Der-Derry/Londonderrytime type:
Full time posted on:
Posted Todaytime left to apply:
End Date:
March 5, 2026 (8 days left to apply) job requisition :
R26832

At Allstate, great things happen when our people work together to protect families and their belongings from life’s uncertainties. And for more than 90 years, our innovative drive has kept us a step ahead of our customers’ evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection.
** Your role in the team
** We are seeking a Senior CICS Infrastructure Solutions Engineer with hands-on mainframe experience to lead, support, and modernize enterprise CICS environments. This role is deeply infrastructure-focused and responsible for the stability, performance, scalability, and modernization of mission-critical transaction systems. The ideal candidate is a seasoned CICS systems engineer who understands both the traditional strengths of CICS, and its evolution into a modern API-enabled platform.
** Job Description
*** Install, configure, upgrade, and maintain CICS/TS across multiple LPARs (DEV/TEST/QA/PROD).
* Design and manage CICS regions, including TORs, AORs, FORs, and coupling facility structures.
* Own and deliver high availability, resiliency, and disaster recovery strategies for CICS environments.
* Perform capacity planning, performance tuning, and MIPS optimization.
* Troubleshoot complex CICS issues such as storage violations, abends, region hangs, and performance degradation.
* Integrate CICS with z/OS Connect, MQ, DB2, IMS, and distributed platforms.
* Support API enablement, including SOAP-to-REST modernization and secure transaction exposure.
* Ensure secure connectivity using RACF, TLS, digital certificates, and network controls.
* Drive automation using SMP/E, REXX, JCL, Ansible, and vendor tooling.
* Reduce technical debt via proactive upgrades, feature enablement, and component decommissioning.
* Collaborate with application teams to modernize legacy interfaces while preserving system stability.
** Essential Criteria
*** All candidates must have the legal right to work in the UK. Allstate is unable to provide sponsorship for this position.
* A minimum of 5 years CICS Systems Programming experience in large-scale enterprise environments including installation, maintenance and configuration of the product.
* A minimum of 5 years’ experience with z/OS systems, (JES, SMF, WLM, SMP/E etc.) Performance tuning and problem determination
* Availability for on-call support the successful candidate will be part of the escalation path for out-of-hours on-call support.
** Desirable Criteria
*** Prior leadership / team leader experience
* Experience of configuring z/OS Connect
* Familiarity with CPSM
* Exposure to MQ, z/OS Connect, and mainframe networking concepts.
* Some experience in Programming/Scripting tools such as COBOL, REXX, Python etc.
* Exposure supporting 24x7, high-volume transaction systems.
** Supervisory Responsibilities
*** This job does not have supervisory duties.
** Posting date end date:
Wednesday 4th March  [11.59pm]
**** Joining our team isn’t just a job — it’s an opportunity. One that takes your skills and pushes them to the next level. One that encourages you to challenge the status quo. One where you can shape the future of protection while supporting causes that mean the most to you. Joining our team means being part of something bigger – a winning team making a meaningful impact.
** Allstate NI is proud to be Allstate’s European Digital Centre of Excellence—recent winners of ‘Best Use of Cloud Services’ at the Belfast Telegraph IT Awards 2024, and recognised for our community and sustainability impact at the 2024 Business in the Community Awards and Gold accreditation for Environmental Responsibility.

We’re a product-driven, cloud-first organisation delivering real outcomes through modern technology, a digital product-centric talent model, and a culture rooted in…