iSeries Developement Lead

IntaPeople Limited; Cardiff; Hybrid; GBP 58,000 - 62,000; Full time

Job summary

A technology services firm in the UK seeks an iSeries Development Lead to oversee a development team and ensure efficient processing systems. The candidate will need strong skills in RPG and COBOL and a solid understanding of the AS400 environment, among other qualifications. With a hybrid working policy and a supportive culture, this role offers excellent development opportunities. Please note that regular travel to Cardiff is needed.

Benefits

25 days annual leave plus 16 additional days

28% Pension

Hybrid working policy

Supportive working culture

Qualifications

• Strong experience developing in RPG, COBOL, Java or .NET.
• Understanding of the AS400 environment (CL, DDS, DB2, etc.).
• Ability to design specifications and support testing and user journeys.
• Experience leading or mentoring developers is an advantage.

Responsibilities

• 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.
• Reviewing external software and ensuring integrations meet standards.
• Producing clear technical specs and documentation.
• Keeping project leads updated on progress and managing priorities.
• Supporting users and improving existing processes.
• Line managing the iSeries team with development and support.

Skills

RPG

COBOL

Java

.NET

AS400 environment

Data processing

Integrations

Legacy modernisation

Clear communication skills

Mentoring developers

Job description

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.