Senior Infrastructure Specialist - zDatabase IMS Sysprog

End Date:
Wednesday 12 August 2026

Salary Range £72,702 - £80,780

We support flexible working –  for more information on flexible working options

We're looking for a Senior Infrastructure Specialist - zDatabase IMS Systems Programmer to become part of our z Mainframe lab in Core Infrastructure.

Location:

Manchester or Edinburgh

Hours:

Full-time - 35 hours per week

Working Pattern:
Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at our Manchester or Edinburgh office sites. Colleagues with disabilities can be supported with workplace adjustments including hybrid working expectations in line with our Flexibility Works policy.

As a Senior Infrastructure Specialist, you'll be responsible for the development, implementation, support and continuous improvement of IMS and Datacom services across our zMainframe estate. Working within the Core Infrastructure z Mainframe team, you'll provide deep technical expertise, ensuring the reliability, performance and security of critical database and transaction processing environments. You'll also support strategic programmes, infrastructure change initiatives and operational excellence activities while helping to develop the strategic direction of our mainframe platforms.

This position provides the chance to contribute within a cooperative, expert group setting where exchanging knowledge, creativity, and ongoing development are strongly supported.

• Delivering technical direction and expert insight for IMS and Datacom technologies within the zMainframe environment.
• Crafting, implementing, maintaining and improving infrastructure services in line with Group standards, policies and architectural principles.
• Ensuring systems remain secure, available, resilient and performant, meeting agreed service levels and operational objectives.
• Supporting infrastructure projects, platform upgrades and technology refresh activities from planning through to implementation.
• Investigating and resolving complex incidents and problems, identifying root causes and implementing long-term solutions.
• Participating in an on-call rota and providing out-of-hours support when required.
• Collaborating with infrastructure, engineering, architecture and application teams to deliver reliable and scalable services.
• Finding opportunities for automation, optimisation and continuous improvement across the platform estate.
• Contributing to technical documentation, standards, knowledge sharing and mentoring activities.

We're transforming esting billions in our people, data and tech to change the way we meet the needs of our 28 million customers. We're growing, and we'd love you to be part of the journey. If you're passionate about mainframe technology and want to help shape the future of critical banking infrastructure, we'd love to hear from you. We know that great talent comes from many backgrounds.

Whilst this job advert may reference specific years of experience, we recognise that skills are developed in many ways, so if you have relevant, transferable experience, we encourage you to apply. This is a place for you. Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities. We're committed to creating an environment in which everyone can thrive, learn and develop.

• Extensive background as an IMS Systems Programmer in a z/OS Mainframe setting.
• Demonstrated experience in installing, configuring, supporting, and maintaining IMS and Datacom products.
• Experience supporting large-scale, business-critical production environments.
• Strong diagnostic and problem-solving skills with experience managing complex technical incidents.
• Knowledge of mainframe operational practices, change management and service management processes.
• Experience working within highly regulated or enterprise-scale environments.
• Effective communication and collaborator management skills, with the ability to collaborate across technical and non-technical teams.
• A proactive approach and passion…