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Software Engineer, Mainframe

NatWest Group
Full-time
On-site
London, ENG

JobsCloseBy Editorial Insights

NatWest Group is hiring a Software Engineer, Mainframe in London for an onsite, full-time role with a hybrid ways of working approach. You’ll join a feature team responsible for engineering and maintaining secure, high‑performance, customer‑centric mainframe solutions across the full lifecycle, from development to decommissioning, and you’ll collaborate with engineers, architects and business analysts. The role emphasizes strong ZOS Connect EE and DB2 REST API experience, CICS web services, SOA and RESTful APIs, and exposure to Java microservices on zOS, plus hands on with Endevor, CICD, FileAid, Xpeditor and IBM Explorer for ZOS alongside tools like Jenkins, Git, JIRA and Confluence. To apply, tailor your CV to quantify impact, showcase cross‑functional delivery and security focus, and prepare concrete examples of stakeholder collaboration.


Join us as a Software Engineer, Mainframe

  • This is an opportunity for a driven Software Engineer to take on an exciting new career challenge
  • You’ll have the opportunity to build a wide network of stakeholders of varying levels of seniority
  • It’s a chance to hone your existing technical skills and advance your career

What you'll do

In your new role, you’ll engineer and maintain innovative, customer centric, high performance, secure and robust solutions.

You’ll be working within a feature team and using extensive experience to engineer software, scripts and tools that are often complex, as well as liaising with other engineers, architects and business analysts across the platform.

You’ll also be:

  • Producing complex and critical software rapidly and of high quality which adds value to the business
  • Working in permanent teams who are responsible for the full life cycle, from initial development, through enhancement and maintenance to replacement or decommissioning
  • Collaborating to optimise our software engineering capability
  • Designing, producing, testing and implementing our working code
  • Working across the life cycle, from requirements analysis and design, through coding to testing, deployment and operations

The skills you'll need

You’ll need a background working in ZOS connect EE and DB2 Rest APIs along with extensive knowledge in CICS webservice.

 

You’ll also need:

  • Expert level knowledge of SOA and Restful APIs
  • Knowledge of Agile Practices and Tools such as JIRA, Confluence, IBM UCD, Jenkins, Bitbucket and Gitlab
  • Development experience using Endevor, CICD, FileAid,  Xpeditor, IBM explorer for ZOS, api, cobol, IntelliJ, bash and or git
  • Proficiency with SOAP, WSDL and JSON
  • Exposure to JAVA microservices in z/os

Hours

35

Job Posting Closing Date:

13/02/2026

Ways of Working:Hybrid