Fullstack Engineer (Node/ React/ Typescript/ Lambda/ Snowflake)

Salary: Competitive Plus Benefits

Location: Holborn Store Support Centre and Home, London, EC1N 2HT

Contract type: Permanent

Business area: Sainsbury's Tech

Closing date: 16 June 2025

Requisition ID: 302886

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.

We’re a multi-channel, multi-brand business serving millions of customers a day, with the UK’s largest loyalty scheme and an ever-evolving set of digital platforms. All of this equals over 1.2 billion transactions each year, presenting a volume, depth and complexity of data that few can match. We don’t think we’re exaggerating when we say we have the most exciting data set in the country. And from the insights gained, we build scalable, high-performance products using cutting-edge technology that give our customers an amazing shopping experience– like our award-winning SmartShop app.

In an inclusive environment, you’ll have the space to be curious, to experiment, and to solve real-world challenges. And you’ll get to see your creations in the hands of millions of people across the UK. As an Engineer (Full Stack), you’ll be part of one of our Engineering squads, interpreting and following architectural and engineering principles, operating frameworks, and new and improved tech applications and solutions. With your technical craft, curiosity and experimentation, you’ll use judgement to apply specific techniques to deliver focused outcomes that support our customers.

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 constantly strive to improve the way things are done in your team, contributing as a progressive member of the engineering community.

More about the role:

Our team is at the start of a transformation of marketing technology across Sainsbury’s, helping Sainsbury’s adopt a multi-channel, multi-brand marketing strategy following the strategic acquisition of Nectar and Argos brands. Our focus is building products and applications that enable our marketing and Nectar loyalty teams plan targeted campaigns and activities, using our rich customer data and Nectar loyalty information. We’re on a mission to simplify and consolidate the marketing technology estate across Sainsbury’s, building new, modern web-based applications used across all Sainsbury’s brands, that will deliver key strategic value to the business. We’re looking for an experienced Full Stack Engineer to help drive this mission.

You’ll develop tools and applications by producing clean, maintainable code and together with your Product Team own and support features produced throughout the entire lifecycle. You’ll participate in team ceremonies, collaborate with Sainsbury’s Tech teams and third-party vendors, and suggest potential areas for improvement to achieve business outcomes.

More about you:

• Commercial experience building client-side web applications using React and modern React features like Hooks.
• Proficient in TypeScript, HTML5, CSS3 and SASS.
• Passionate about TypeScript, and experience with NodeJS building effective GraphQL and REST APIs with clear consumer contracts, or event-driven integrations.
• Experience with AWS Lambda + Serverless, or similar technology (Azure Functions, Google Functions, etc.), or Containerisation with Docker, ECS, and Kubernetes.
• Experience with a variety of database technologies, including NoSQL Databases such as MongoDB or DynamoDB as well as Relational Databases like PostgreSQL and MySQL.
• Passionate about defining infrastructure-as-code with tools such as CloudFormation, CDK or Terraform.
• Knowledge of DevOps practices, experience in supporting applications in production and using Monitoring and Alerting tools to enable proactive response to incidents.
• Excellent communication and collaboration skills, and past experience with mentoring peers.

As well as lots of on-the-job training and endless opportunities, you’ll get:

• Colleague discount across our multi-brands – Sainsbury’s, Argos and Habitat.
• Holiday allowance.
• Bonus scheme.
• Pension plan.
• Special offers on gym memberships, restaurants, holidays, retail vouchers and more.

Work-life balance is important to us, so we offer our colleagues as much flexibility as possible in line with the needs of their role. We trust them to decide how, where and when they work, combining remote and collaborative working with a flexible approach to hours, giving them plenty of time and space for life outside of work whilst delivering against our business goals.

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:

• 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 10% 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, cycle to work scheme, health cash plans, pay advance (where you can access some of your pay before payday) 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.
• 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.

Please see www.sainsburys.jobs for a range of our benefits (note, length of service and eligibility criteria may apply).