Senior Engineer - Frontend
Salary: Competitive Plus Benefits
Location: London Store Support Centre and Home, London, EC1M 6HA
Contract type: Permanent
Business area: Sainsbury's Tech
Closing date: 06 November 2025
Requisition ID: 400032059
We’d all like amazing work to do, and real work-life balance. That’s waiting for you at Sainsbury’s. Think about the scale it takes for us to feed the nation. The level of data, transactions and variety it involves. Then you’ll realise that ours is a modern software engineering environment because it has to be. We’ve made serious investment into a Tech Academy and into setting standards and principles. We iterate, learn, experiment and push ways of working such as Agile, Scrum and XP. So you can look forward to awesome opportunities in everything from AI to reusable tech.
Why join us
Joining Sainsbury's Tech as a Senior Engineer means becoming part of a leading technology organisation that powers the UK's top multi-channel, multi-brand retailer. We are a community of passionate engineers who are empowered to define and deliver through the use of technology. With a focus on continuous improvement and technical excellence, you'll have the opportunity to shape our engineering vision, drive adoption of best practises, and work with cutting-edge technologies. Not only will you contribute to innovative solutions that impact millions of customers, but you'll also be part of a progressive community that fosters growth, collaboration, and the advancement of engineering expertise. With the support and resources available, you can accelerate your professional development and enhance your skills within a dynamic, agile environment. Join us and be part of a team dedicated to making a meaningful impact within the retail industry while staying at the forefront of technological advancements.
What you'll do
As a Senior Front-End Engineer, you’ll play a key role in designing and delivering high-quality, user-focused web applications that improve customer experiences, drive efficiency, and help reduce business costs. You’ll lead the development of front-end features, applying sound engineering principles and architectural thinking to ensure performance, security, and maintainability. Your expertise will support the team in managing risk and compliance, while your passion for quality will help shape a culture of excellence.
We use a variety of tech here and you need to be willing to pick up new tools and techniques. We’d also like you to be yourself – analytical, curious and unafraid to challenge the status quo. You’ll be a role model for best practices, championing a customer centric mindset and a passion for finding creative ways to solve problems, mentoring fellow engineers as a progressive member of the engineering community.
More about the role
- Develop and maintain robust, responsive, and accessible front-end applications.
- Lead feature development from concept to delivery, ensuring high standards of quality and usability.
- Champion modern front-end practices and tools, driving continuous improvement and innovation.
- Monitor and maintain the health of front-end services, ensuring reliability, performance, and security.
- Collaborate cross-functionally to align technical solutions with business goals.
- Mentor junior developers and contribute to a culture of learning and excellence.
Who you are
As a Senior Engineer at Sainsbury's, you are a highly skilled and experienced professional in the field of engineering and technology. With a deep understanding of the retail business and the ever-evolving technology landscape, you have the expertise to design and implement high-quality solutions that drive value and align with Sainsbury's Group strategy. You possess a strong foundation in agile engineering practises and have a proven track record of leading and motivating engineering teams. With a results-oriented mindset and a focus on evidence-based decision-making, you thrive in a fast-paced, collaborative environment where you can make meaningful contributions to the success of Sainsbury's Tech.
- Strong proficiency in React 19, Next 15 and Typescript, with solid understanding of accessibility, responsive design, and performance best practices.
- Familiar with modern front-end tools and frameworks such as Tailwind, CSS modules, Fable component library, design tokens, Playwright, and Jest.
- Great expertise in engineering practice, including deep knowledge of engineering and architectural principles.
- Proven experience of software design and implementation, security, cloud, infrastructure as code and CI/CD.
- Self-drive and constantly striving to improve your team, division and peers through coaching and mentoring.
- Drive for advocacy of agile/lean delivery methodologies.
- A passion for enhancing your knowledge and curiosity in emerging tech.
- Display empathy and understanding in supporting colleagues in the team to deliver.
We are committed to being a truly inclusive retailer, so you’ll be welcomed whoever you are and wherever you work. Around here, there’s always the chance to try something new - whether that’s as part of an evolving team or somewhere else across the business - and we take development seriously and promise to support you. We also recognise and celebrate colleagues when they go the extra mile and, where possible, offer flexible working. When you join our team, we’ll also offer you an amazing range of benefits. Here are some of them: Moments that matter are as important to us as they are to you which is why we give up to 26 weeks’ pay for maternity or adoption leave and up to 4 weeks’ pay for paternity leave.
Starting off with colleague discount, you'll be able to get 10% off at Sainsbury's, Argos, TU and Habitat after 4 weeks. This increases to 15% off at Sainsbury’s every Friday and Saturday and 15% off at Argos every pay day. We've also got you covered for your future with our pensions scheme and life cover. You'll also be able to share in our success as you may be eligible for a performance-related bonus of up to 20% of salary, depending on how we perform.
Your wellbeing is important to us too. You'll receive an annual holiday allowance, and you can buy additional holiday. We also offer other benefits that will help your money go further such as season ticket loans, interest free car loan of up to £10k, cycle to work scheme, health cash plans, pay advance (where you can access some of your pay before pay day) as well access to a great range of discounts from hundreds of other retailers. And if you ever need it there is also an Employee Assistance Programme, you will also be eligible for private healthcare too.
Please see www.sainsburys.jobs for a range of our benefits (note, length of service and eligibility criteria may apply).
