Senior Infrastructure Specialist (zDatabase IMS Sysprog)

• 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

Benefits

• A generous holiday allowance: You’ll be eligible for a minimum of 22 days holiday (excluding bank holidays), rising to 30 days based on length of service and grade.
• A flexible way of working: Whether you want flexibility over your location or when you log on, together we can create an approach that works for you and for the business.
• Family leave: Up to 63 weeks of maternity or adoption leave. Statutory maternity or adoption pay is available for 39 weeks, and 20 weeks will be enhanced to the equivalent of full pay. Partners can have six weeks of fully paid paternity leave.
• Flex cash: This is 4% of your basic salary and can be used to spend on the benefits of your choice, or you can choose to take it as a cash top up in your monthly salary.
• Health insurance: Our company funded Private Medical Benefit provides all colleagues with access to good quality medical care, including accommodation, nursing care and specialist advice.
• Colleague Offers: Get discounts on everything from electrical items to cinema tickets and weekly food shopping. You can share this benefit with up to ten family members or friends.
• Financial products: Take advantage of our great financial products, some at a discounted rate, including current accounts, home and car insurance and loans.
• Share plans: Participate in Sharematch and receive matching shares of up to £45 a month from the company, and you can choose to participate in Sharesave, our combined savings and share option plan.
• Pension: We offer a generous pension plan, with all joiners being automatically enrolled in our ‘Your Tomorrow’ scheme. You can decide how much you save and get a say in where your contributions are invested.- Effective communication and collaborator management skills, with the ability to collaborate across technical and non-technical teams
• Demonstrated experience in installing, configuring, supporting, and maintaining IMS and Datacom products
• Knowledge of mainframe operational practices, change management and service management processes
• Extensive background as an IMS Systems Programmer in a z/OS Mainframe setting
• Experience working within highly regulated or enterprise-scale environments
• Experience supporting large-scale, business-critical production environments
• A proactive approach and passion for delivering resilient, high-quality infrastructure services
• Strong diagnostic and problem-solving skills with experience managing complex technical incidents
• Experience supporting modernisation initiatives involving mainframe platforms
• Knowledge of automation, scripting or infrastructure optimisation techniques
• Datacom Admin experience for z/OS
• 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
• Understanding of broader z/OS infrastructure components and associated technologies
• 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- End Date: Wednesday 12 August 2026