Developer / Senior Developer - Mainframe
Confirmed on the employer's own hiring board on Sep 29, 2026. First seen by Alion on Jul 27, 2026.
The Role:
Let’s talk numbers. When it comes to UK retail, it’s hard to find a bigger name. We sell thousands of items an hour and are expanding our e-commerce business by the second. For anyone in Tech, this is the place to learn. To grow. And to thrive.
What You’ll Take On:
The successful applicant will work on the development and support of our gift card systems, whilst helping maintain and support our other mainframe applications. The role involves all aspects of the development lifecycle and requires flexible and innovative individuals with a positive attitude.
Operating across more than 72 countries worldwide, Next and our Total Platform partners process transactions through a diverse range of payment methods, including gift cards, e-vouchers, credit & debit cards, ApplePay, Klarna, and PayPal. In the UK, we also provide various credit options, which are either developed completely in-house or powered by bespoke third-party software seamlessly integrated into our infrastructure. Ensuring our £2 billion platform remains secure, modern, and fit for purpose is the responsibility of our Payments & Credit Technology Team.
You will provide analysis and programming skills in core languages, review and support the gathering of user requirements, and produce sustainable and efficient solutions following Agile methodologies. You will design, code, maintain and support business critical systems which are used 24/7, 365 days a year. You will develop in both a batch and online environment adhering to relevant standards and working closely with our user community to provide both technical and non-technical advice.
You’ll be doing all this from our Leicestershire Head Office. A fast-paced, encouraging and supportive environment in which everyone brings an energy and a commitment to delivering for our customers and their own careers. Bring your energy. Play to your strengths. Make things bigger and better than before. Let’s Take It On.
What You’ll Bring:
You will have proven experience working in a Mainframe environment, with solid commercial experiences in the following:
- COBOL/CICS COBOL
- ADABAS
- NATURAL
- DB2 and SQL
- JCL
Desirable:
- zOS connect
- Websphere MQ
- SOAP/REST APIs
- XML
- JSON
- .NET
- Microsoft Azure DevOps / TFS
- Endevor (Software Change Manager)
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