Backend Developer

Who We Are

Science In Sport Group is a world leader in sports and performance nutrition.

We have two highly regarded brands;
SiS which combines world-class science and innovation to provide optimal performance nutritional solutions for professional athletes, sports and fitness enthusiasts and the active lifestyle community. This includes over 320 professional teams worldwide across a broad range of sports including Football, Rugby, Cycling, Athletics, Basketball, Netball and Swimming. Brand ambassadors include former track cyclist Sir Chris Hoy, an eleven-time world champion and six-time Olympic champion, and Eilish McColgan, who won gold in the 2022 Commonwealth Games 10,000 metres.

PhD Nutrition is a premium, active-nutrition brand for the active lifestyle community wanting intelligent nutrition to help them achieve their goals. With over 20 years of research and development, our products are designed to maximise performance in and out of the gym. It’s an exciting time for PhD Nutrition as 2025 will kick off an entirely new line up of brand ambassadors, from hybrid athletes to qualified sports nutritionists.

The two brands sell through the  and  digital platforms, third-party online marketplaces including Amazon, as well as extensive domestic and international retail distribution.

In 2022 the company opened a state of the art 160,000 square foot manufacturing and logistics facility in Blackburn, Lancashire. Providing a significant advantage in product costs and customer response time and most importantly, allowing Science In Sport to lead the way for quality standards.

Science In Sport is the nutrition partner to globally recognised elite teams, including Tottenham Hotspur, Saracens Rugby, British Triathlon, Aquatics GB, British Cycling, England Netball and Loughborough Sports. As well as being the Official Energy Gel Provider of Run Through and the Official Nutrition Partner of Ultra X.

• Contract: 12-month Fixed-term contract
• Salary: £50,000 - £60,000 per annum
• Working Hours: Monday to Friday, 9am to 5.30pm
• Location: Blackburn

• Pension scheme, employer contribution at 4%
• On-site gym
• Cycle to work scheme
• Product discount
• Birthday day off

• Robust, reliable and well-architected backend code and modules for Adobe Commerce.
• Stable data handling and integrations (orders, products, customer data, payments, shipping, 3rd-party APIs).
• High performance and scalable backend infrastructure to ensure fast response times, efficient database access and proper caching.
• Secure platform; following best practices for security, data protection, and compliance.
• Timely delivery of backend features, bug fixes, and backend-related support in sprints/releases.
• Clear documentation of backend architecture, modules, APIs that facilitate maintainability and collaboration.

Technical Skills

• Strong PHP knowledge and object-oriented programming.
• Deep understanding of Adobe Commerce / Magento backend architecture: modules, config XML, database models, resource models, repositories, events/observers, plugin architecture.
• Experience with MySQL (or equivalent), database schema design, query optimisation, indexing, caching layers (Redis, Varnish, etc.).
• Familiari…