Mainframe Performance

Location/Office Policy: Central Park, Hybrid (2 days a week in the office, moving to 3 days in office from Jan 2026) Are you passionate about contributing and delivering value within a highly complex technology domain?
Are you driven to take a pivotal role within an Enterprise Technology team supporting platform Performance/Capacity, Architectural evolution and technology cost optimisation?
Can you demonstrate a high level of analytical skills, solution development and delivery?
What is the Role: The Mainframe Performance and Capacity Lead is a critical role within the Enterprise Delivery organisation reporting directly to the Head of the Mainframe, Tandem and Midrange function.
The role supports the effective management of the platform's multi-million cost base.
This role is a crucial part of our constant drive to maximise cost savings whilst ensuring we deliver the best customer experience in terms of performance and availability of our services.
Initially, the successful candidate will focus upon and have responsibility for managing the core disciplines of Service Performance and Capacity Management for the Mainframe and Tandem platforms.
The role will potentially evolve and expand over time to cover the other platforms within the scope of responsibility of the function.
Key accountabilities: Mainframe Performance and Capacity Role: Ensure optimal day-to-day performance of all applications and services supported by the platforms.
Manage the capacity of the platforms to ensure optimal use of technology resources whilst maintaining contract compliance.
Maintain a capacity plan with accurate projection to support architectural and new product procurement decisionsLiaise and cooperate with all stakeholders to support avoidance or resolution of performance related service incidents.
On an annual basis, actively manage the environment to deliver clear customer service and financial benefits, proactively identifying and reporting potential opportunities.Assess the performance of new applications to ensure they will perform optimally.Maintain and communicate related KPIs and capacity plans to all stakeholders in a timely manner.Maintain and further develop the overall Performance/Capacity Management discipline in cooperation with the Head of the function.
What you Will Bring: Excellent technology experience gained over a minimum of 10 years related career experience and with knowledge of the Mainframe and/or Tandem platforms.A minimum of 5 years leading and delivering technology initiatives to improve service, system availability whilst optimising costs.Strong intra-personal and collaboration skills and experience working across a range of diverse technical teams and third-party suppliers.
Demonstrable experience setting goals and delivering on objectives.Demonstrated experience in preparation and presentation of reports, business cases or innovation ideas to senior management.Experience of cultivating Innovation and driving forward related change initiatives to conclusion.
Why Work for AIB: We are committed to offering our colleagues choice and flexibility in how we work and live and our hybrid working model enables our people to balance their time between working from home and their designated office, subject to their role, the needs of our customers and business requirements.
Some of our benefits include: Market leading Pension SchemeHealthcare SchemeVariable PayEmployee Assistance ProgrammeFamily leave optionsTwo volunteer days per year Please click here for further information about AIB's PACT – Our Commitment to You.
Key Capabilities Customer First - Building strong customer relationships and delivering customer-centric outcomes every day.Collaborates – Works closely with AIB colleagues and third-party IT partners and service providers on a daily basis to deliver a high-quality technology service to our customers and our business.Breadth of Technical Knowledge – Possesses a wide understanding of many of AIB's existing technology solutions and quickly becomes familiar with new technology solutions when they are implemented.Operational Excellence - Identifies opportunities to improve efficiency while providing an excellent service to internal or external clients; manages resources, such as monetary assets, to optimise cost effectiveness and ensure accuracy in all services provided.KPI Development and Management - Sets goals and monitor progress by developing key performance indicators and collecting relevant qualitative and quantitative data to measure and assess the impacts of programmes or processes.
If you are not sure about your suitability based on any aspects of the role advertised, we encourage you to please contact the Recruiter for this role, Tim, at ****** for a conversation.
AIB is an equal opportunities employer, and we pride ourselves on being the first bank in Ireland to receive the Investors in Diversity Gold Standard accreditation from the Irish Centre for Diversity.
We are committed to providing reasonable accommodations for applicants and employees.
Should you have a reasonable accommodation request please email the Talent Acquisition team at ****** Disclaimer: Unsolicited CV's sent to AIB by Recruitment Agencies will not be accepted for this position.
AIB operates a direct sourcing model and where agency assistance is required, the Talent Acquisition team will engage directly with our recruitment partners.
Application deadline: 12th September 2025