iSeries Developement Lead in Cardiff

iSeries Development Lead

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.