Senior Software Engineer RPG

We’re looking for an experienced Senior RPG Software Engineer to join us on a 12 month fixed term contract
, supporting the development, maintenance and modernisation of business-critical applications on the IBM i platform.

This is a hands‑on technical role, combining software development, production support, deployments, system operations and technical leadership. You’ll work closely with technical teams and business stakeholders to deliver robust, maintainable solutions that support key business operations.

If you’re an experienced RPG Software Engineer looking for your next fixed term opportunity, we’d love to hear from you.

• Design, develop and maintain applications using RPG/400, RPG IV, ILE RPG and Free Format RPG.
• Support and enhance solutions running within IBM i / AS400 environments.
• Analyse business requirements and translate them into robust, maintainable technical solutions.
• Develop and optimise DB2 for i databases, SQL queries and data structures.
• Design and maintain integrations using REST APIs, JSON and XML.
• Troubleshoot and resolve complex application, database and system issues.
• Plan and support software deployments across development, test and production environments.
• Support IBM i operational processes, including batch processing, job scheduling and subsystem management.
• Contribute to testing, code reviews, documentation and continuous improvement initiatives.
• Share technical knowledge, mentor engineers and support high‑quality delivery across the team.
• Participate in Agile delivery activities including planning, stand‑ups, reviews and retrospectives.

• Degree in Computer Science or related discipline, or equivalent commercial experience.
• Significant experience as a Senior RPG Engineer, RPG Developer or IBM i Developer.
• Strong RPG development experience, including RPG/400, RPG IV, ILE RPG and Free Format RPG.
• Strong understanding of the IBM i platform and application lifecycle.
• Experience developing and maintaining 5250‑based business applications.
• Experience with DB2 for i database development and performance optimisation.
• Ability to design and build integrations using REST APIs.
• Experience working with JSON and XML data formats.
• Knowledge of CL programming and IBM i operational processes.
• Experience managing software deployments and production releases.
• Experience supporting batch workloads, job queues and subsystem operations.
• Strong troubleshooting and problem‑solving skills.
• Understanding of software engineering best practices including testing, code quality and maintainability.
• Experience working within Agile development environments.
• Excellent communication and stakeholder management skills.

• Good SQL knowledge, including Embedded SQL within RPG applications.
• Experience with DDL and modern database design approaches.
• Experience with RDi and modern IBM i development practices.
• Familiarity with Git, Azure Dev Ops or similar source control and delivery tools.
• Exposure to web development concepts and HTML integration.
• Experience with IBM i modernisation initiatives and hybrid architectures.
• Familiarity with GUI enablement or terminal modernisation tools such as Newlook.
• Experience with document and spool file transformation tools such as Inter Form.
• Experience with Freestyle or similar web enablement solutions for RPG applications.
• Knowledge of CI/CD practices and deployment automation.

You’ll play a key role in supporting and improving important IBM i applications, while working with colleagues across technology and the wider business. This is a great opportunity for someone who enjoys solving complex problems, taking ownership of technical delivery and bringing strong RPG and IBM i expertise into a collaborative environment.

When your groceries arrive at your door or you sign for your online parcel, one or more of our software, telematics or proof‑of‑purchase solutions has probably been used. Our solutions deliver value to many of the UK’s leading grocery retailers and food logistics providers as well as to household names including JCB, Eddie Stobart, Carlsberg, Waitrose, and Royal Mail.

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