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Mainframe Software Engineer

United Kingdom, Nottingham · Job Posted March 13, 2026
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Job Description

This is a great opportunity for you to join a small development team working on in-house applications for the likes of forecasting and replenishment and other in-store activities. Reporting into the Development Manager, you'll work closely across functional teams, including contractors and offshore teams to agree on requirements, preparing and implementing documentation and providing ad-hoc coding where required.

Job Responsibility

  • Working with colleagues across functional teams to agree on requirements and designs
  • Producing detailed design documentation
  • Supervising offshore work – both development and testing
  • Identifying test cases and creating test data
  • Preparation of implementation documentation
  • Supporting implementations (out of hours cover may be required)
  • Analysing existing code to understand functionality
  • Analysing scheduler information (applications, jobs, JCL etc) to understand data flows and interdependencies
  • Ad-hoc coding and testing of programs when required

Requirements

  • 10+ years of proven software development experience using Cobol, TSO/ISPF, JCL, DB2, SQL
  • Experience working on IBM z/OS
  • Strong understanding of various software testing methodologies
  • Excellent ability to explain technical concepts to appropriate audiences in non-technical terms
  • Extensive experience maintaining and supporting software solutions
  • Experience working with offshore development and test teams
  • Experience working with the full software development lifecycle
  • Hands on experience of source control such as Git
  • Understanding of Project Management, SDLC, ITIL and Data Security & Compliance and other frameworks
  • Ability to research alternative technical solutions, build and test them and recommend their adoption

Nice to have

  • Experience with DL1/IMS technology
  • Knowledge of Easytrieve Plus
  • Knowledge of Assembler
  • Experience working on legacy systems
  • Experience of ensuring stability of legacy systems during modernisation
  • Understanding of Retail and Supply Chain systems
  • Experience managing small teams of developers

What we offer

  • Boots Retirement Savings Plan
  • Discretionary annual bonus
  • Generous employee discounts
  • Enhanced maternity/paternity/adoption leave pay and gift card for anyone expecting or adopting a child
  • Flexible benefits scheme including option to buy additional holiday, discounted gym membership, life assurance, activity passes and much more
  • Access to free, 24/7 counselling and support through TELUS Health, our Employee Assistance Programme

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