Job Description

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, agile 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 a Senior Engineer (Frontend), you’ll be part of one of our Engineering teams, applying architectural and engineering principles to define and deliver technology that will better customer experiences, improve efficiency and reduce business costs, helping us to lower prices. You’ll support your team by enabling performance, compliance and risk management by sharing your expertise, judgement and passion for delivering quality products for customers.

In the role, you’ll lead the design and development of large-scale services with high performance using technologies such as React, Redux, TypeScript, Kotlin, Java and Springboot. This includes websites, apps, microservices and event driven architecture. You’ll possess programming language expertise in one or more languages in our ecosystem, such as Javascript, React, Swift/iOS, Android, Kotlin, Java, Springboot and Golang.

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

• You’ll lead the design and development of large-scale services with high performance using technologies such as React, Redux, TypeScript, node.js, SpringBoot. This includes websites, microservices and event driven architecture
• You’ll also lead the implementation of cloud and container technologies such as Kubernetes on AWS
• It will be up to you to drive the product technical roadmap through a deep understanding of technology and broader understanding of roadmaps across CTO’s
• Leading the design and support of services and internal frameworks that enhance Sainsbury’s capabilities
• You’ll guide, support and enable performance within the team through providing technical knowledge and ideas
• We’ll look to you to contribute to optimising our OPEX and CAPEX spend

More about you

• Possess programming language expertise in one or more languages in our ecosystem, such as Javascript, React, node.js, Java, Springboot
• Extensive experience with HTML, CSS, SASS/SCSS, React Testing Library and Jest
• A good understanding of top 10 OWASAP principles, demonstrable experience in secure design and build
• Experience with performance and optimisation problems
• 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 and any relevant hardware
• Self-drive and constantly striving to improve your team, division and peers
• Drive for advocacy of agile/lean delivery methodologies
• A passion for delivering solutions to customers, owning the whole SDLC and living the DevSecOps principles
• A passion for enhancing your knowledge and evidence curiosity in emerging tech
• Display empathy and understanding in supporting colleagues in the team to deliver

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.