Frontend Developer (12-month Fixed-term contract) in Blackburn

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 phd.com and scienceinsport.com 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 RunThrough and the Official Nutrition Partner of Ultra X.

The Role

• Contract: 12-month Fixed-term contract
• Salary: £40,000 - £50,000 per annum
• Working Hours: Monday to Friday, 9am to 5.30pm
• Location: Blackburn

Benefits

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

Your 4 most important responsibilities

• Build and maintain Adobe Commerce storefronts - Develop responsive, high-quality themes, templates, and UI components using Adobe Commerce’s frontend framework.
• Translate designs into functional interfaces - Implement UX/UI designs, wireframes, and prototypes into clean, efficient frontend code.
• Optimise site performance and user experience - Deliver fast page loads, strong Core Web Vitals, accessibility compliance, and a consistent cross-device experience.
• Troubleshoot, enhance, and support the storefront - Resolve frontend issues, improve existing components, and collaborate with cross-functional teams to support smooth releases.

What you are responsible for delivering

• A polished, performant Adobe Commerce storefront that works across browsers and devices.
• Clean, scalable frontend code that aligns with Adobe Commerce best practices.
• Reliable delivery of features, enhancements, and fixes within sprint timelines.
• Proper integration and styling of Adobe Commerce extensions and custom modules.
• Reduced frontend defects through proactive testing, performance tuning, and peer collaboration.
• Transparent communication around progress, blockers, and technical decisions.

The skills and behaviours required to do this job well

Technical Skills

• Strong command of HTML5, CSS3, LESS/SASS, JavaScript, and jQuery.
• Thorough understanding of Adobe Commerce (Magento 2) theme structure, layout XML, PHTML, and Knockout.js.
• Hands-on experience with UI Components and Adobe Commerce’s rendering architecture.
• Proficiency with Git, build tools (Webpack/Gulp/Grunt), and browser debugging.
• Ability to improve frontend performance, SEO, and accessibility.

Behaviours

• Writes organised, maintainable code and follows established workflows.
• Communicates clearly with designers, backend developers, and project managers.
• Takes ownership — follows tasks through from definition to completion.
• Prioritises effectively in fast-paced, Agile environments.
• Identifies issues early and proposes practical, technical solutions.
• Curious, inquisitive and actively researches industry trends, updates to Adobe Commerce, release notes.

Performance – how you will know you are doing a great job

• The storefront delivers fast, stable performance with strong Core Web Vitals and Lighthouse scores.
• Designs are accurately implemented and aligned with branding and UX expectations.
• Frontend-related bugs are minimal and decreasing over time.
• Sprint commitments are met consistently with high-quality output.
• Teammates and stakeholders rely on your expertise and trust your work.
• Customer experience and site usability are noticeably improved.

Specific metrics will be set when in role and will be reviewed and built upon regularly. Alongside this, you will be supported with a personal performance plan that will enable you to continue improving your own performance and impact.

Experience and mindset that will enable you to do well in this role

• 2–5+ years of experience working with Adobe Commerce (Magento 2) frontend development.
• Strong understanding of eCommerce UX principles and customer behaviour.
• Detail-oriented mindset with a strong focus on performance and quality.
• Eagerness to learn, iterate, and stay current with Adobe Commerce updates.
• Collaborative, solution-focused attitude with openness to feedback.
• Practical problem solver — able to break down issues and deliver clear solutions.
• Experience working with an agency (desirable).

Science in Sport Group is an equal opportunity employer; we value diversity and strive to cultivate an inclusive workplace. We do not tolerate discrimination of any kind in regard to race, colour, religion, gender, gender identity, sexual orientation, national origin, ethnicity, age, disability, marital status, or any other characteristic protected by law. We fully support reasonable adjustments throughout our recruitment process, to provide an inclusive and welcoming recruitment experience.