About

• Working hours: 35 hours per week, Monday to Friday
• Duration: 12 month fixed term contract
• Location: Gloucester
• Job Ref: 204355
• About the role
• Benefact Group are looking for a Senior Developer to join our Gloucester office.
• We’re upgrading our IBM Power hardware and operating system in 2026 and looking for someone who can represent the development teams in the process, ensuring a problem free quality migration for the core company platform.
• Why join us?
• Join a collaborative and inclusive culture that’s committed to making a difference and building a more sustainable future. Ranked amongst the UK's top 50 Best Large Companies to Work For in 2024, we offer fantastic career and development opportunities within a rapidly growing, innovative Group — where all profits go to charity and good causes.
• What you'll be doing
• Pre-Upgrade Assessment - Review existing applications and dependencies to ensure compatibility with the new IBM Power hardware and OS levels
• Code Remediation - Update or refactor application code to align with new compiler versions, libraries, and review performance enhancements introduced by the upgrade
• Testing & Validation – Work with the Test team to cover functional and performance testing in upgraded environments to confirm stability and compliance with business requirements
• Automation & Deployment Scripts - Develop or update scripts for automated builds, deployments, and configuration management to streamline migration
• Post-Upgrade Support - Troubleshoot issues, optimize performance, and ensure smooth integration with other systems after the upgrade
• What you'll need to have
• IBM Power i System Knowledge - Understanding IBM Power architecture, OS versions and related system utilities.
• Programming Expertise - Proficiency in languages commonly used on IBM Power systems, such as RPG and CL, and integrations like HATS, Java or Python.
• Server, Database and Middleware Familiarity - Experience with IWS, Websphere, DB2 for i, SQL tuning, and middleware components that interact with IBM Power environments.
• Upgrade & Migration Tools Knowledge - Familiarity with tools like IBM Navigator for i, BRMS, and scripting for automation during migration and testing.
• What we offer
• A competitive salary - let's discuss it
• Hybrid working
• Group Personal Pension - up to 12% employer contribution
• Generous annual bonus scheme between 6% and 24%
• 25 days annual leave plus bank holidays, and a holiday buy and sell scheme
• An array of health and wellbeing benefits, including private healthcare, income protection and life assurance
• £200 annual personal grant to a charity of your choice
• Encouraged to take at least one volunteering day per year
• Employee Assistance Programme
• Full study support to gain professional qualifications
• Access to virtual GP
• Enhanced maternity and paternity pay
• Hear from the hiring manager
• "Be part of a high-performing team delivering a seamless IBM Power upgrade—your input and technical insight will make the difference."
• About us
• Benefact Group is a unique international financial services Group made up of over 30 businesses. We are owned by a charity and have been the 3rd largest UK corporate donor over a decade*, having given away £250 million since 2014. We have ambitious plans to become the UK’s number one corporate donor, with strategic objectives in place to double the Group’s size.
• We believe it’s essential to attract, empower, grow and reward talented people, offering fantastic opportunities for career and personal development. Our giving ethos, 135-year history and the diversity of what we do, has enabled us to build a culture of kindness, great ambition, and of passionate people driven to do better and be better.
• At Benefact Group, we are committed to creating an inclusive culture and building an environment where each and every one of us feels valued and respected. We are a community made up of people with a range of different backgrounds, abilities, perspectives, beliefs and interests and we value the strength this brings to us as a Group. We welcome applications from everyone.

• If you need any additional support during the recruitment process, then please let us know.
• *Directory of Social Change’s UK Guides to Company Giving 2017-26