Senior Mainframe Developer

The Role:

As a Senior Mainframe Developer in our Warehouse Tech team, you’ll be at the heart of the engine that powers NEXT. Based in our South Elmsall office, you’ll join a specialist team dedicated to developing and maintaining the software behind our highly automated warehouse and distribution network. Your work ensures that thousands of items are picked, packed, and dispatched to customers across the globe every single day. Whether you’re evolving our international operations or keeping our UK systems robust, you’ll have the autonomy to make a tangible impact from day one. To help you settle in, you’ll be supported by a collaborative team of experts and given the tools you need to understand our unique automation landscape.

What You’ll Take On:

In this role, you’ll bridge the gap between complex technical specifications and high-performance code. You will:

• Develop and maintain mission-critical software using COBOL, CICS, and DB2 to support our vast distribution estate.
• Lead the full development life cycle, from initial requirements gathering and business analysis through to testing and deployment.
• Collaborate with cross-functional teams to deliver project streams that expand our global reach and evolve our warehouse offerings.
• Provide essential support to internal users, ensuring system stability through proactive maintenance and participating in an out-of-hours cover rotation.
• Drive continuous improvement by sharing your expertise to refine our departmental processes, making our development practices faster and more efficient.

What You’ll Bring:

We’re looking for a seasoned developer who balances technical mastery with a practical, problem-solving mindset. You’ll thrive here if you have:

• Strong technical foundations in COBOL, CICS, JCL, and IBM DB2, with a proven track record of delivering clean, reliable code.
• An analytical approach, with the ability to interpret business needs and turn them into functional technical solutions.
• Great communication skills, allowing you to work effectively with both technical peers and internal stakeholders.
• Adaptability and organisation, staying calm and focused during busy periods or when handling out-of-hours support.
• Desirable: experience with SQL, Microsoft Azure DevOps, Natural/ADABAS, or ZOS Connect.

#LI-LE1 #LI-Hybrid

Benefits

• 25% off most NEXT, MADE*, Lipsy*, Gap* and Victoria's Secret* products (*when purchased through NEXT)
• Company performance based bonus
• Sharesave scheme
• On-site Nursery available; OFSTED outstanding in all areas
• 10% off most partner brands & up to 15% off Branded Beauty
• Early VIP access to sale stock
• Access to fantastic discounts at our Staff Shops
• Restaurants with great food at amazing prices
• Access a digital GP and other free health and wellbeing services
• Free on-site parking
• Financial Wellbeing - Save, track and enhance your financial wellbeing
• Apprenticeship - Grow and develop on the job whilst gaining a qualification
• Direct to Work - Discount online and instore, collect your items the next day for free from your place of work or local store
• Support Networks - Access to Network Groups to empower and celebrate each other
• Wellhub - Discounted flexible monthly gym memberships, with apps, PT sessions and more

Conditions apply to all benefits. These benefits are discretionary and subject to change.
We aim to support all candidates during the application process and are happy to provide workplace adjustments when necessary. Should you need support with your application due to a disability or long-term condition, feel free to get in touch with us by email headoffice_careers@next.co.uk (please include 'Workplace Adjustments' in the subject line), or call us on 0116 284 2486 and leave a voicemail.