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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