Salary: £58,000 - £62,000
Contract: Permanent, full-time
Location: Hybrid (regular travel to Cardiff required)
We re looking for an experienced iSeries specialist to lead a small development team and keep key exam processing systems running smoothly. It s a hands-on role where you ll guide technical decisions, support a team of five developers and make sure core applications stay reliable for users across the organisation.
What you ll be doing
Leading the maintenance and modernisation of iSeries systems
Acting as the lead developer for RPG and COBOL work
Designing and delivering new features, integrations and system updates
Overseeing data processing workloads and ensuring outputs are accurate and delivered on time
Reviewing external software and making sure integrations meet internal standards
Producing clear technical specs and documentation
Working with product, BI, research, developers and other internal teams to shape solutions
Keeping project leads updated on progress and managing priorities within the team
Supporting users, explaining technical changes in plain language and improving existing processes
Line managing the iSeries team including workload planning, development and pastoral support
What you ll need
Strong experience developing in RPG, COBOL, Java or .NET
Understanding of the AS400 environment (CL, DDS, DB2 etc)
Ability to design specs, analyse systems and support testing and user journeys
Experience working with data processing, integrations and legacy modernisation
Clear communication skills and confidence dealing with a range of stakeholders
Experience leading or mentoring developers is an advantage
What s on offer
25 days annual leave plus 16 additional days
28% Pension
Hybrid working policy
Supportive working culture with opportunities to develop skills
Welsh language skills not required, but an interest in learning is welcomed
How to apply
Applications are open to candidates across the UK, though regular time on-site in Cardiff is needed. Closing date is Sunday 11 January 2026 with interviews planned for the following week.