Senior Frontend Engineer

Tesco; Welwyn Garden City; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Flexible working

Office locations across the UK

Disability Confident Leader

Job summary

Tesco in the United Kingdom is seeking a passionate Frontend / Web Software Engineer to build scalable UI with JavaScript, TypeScript, React and Node, always putting customers first.

You will work in a collaborative team, shaping product requirements, implementing CI/CD, and delivering high quality, accessible code across browsers and devices.

The role offers hybrid work with office locations in Welwyn Garden City and remote options, supporting flexible working.

Qualifications

• Commercial experience as a Frontend Software Developer.
• Strong knowledge of HTML5, CSS3, JS/TS best practices.
• Experience with React ecosystem and testing.
• Experience with REST and GraphQL.
• Awareness of accessibility and responsive design.
• Familiarity with DevOps and CI/CD.
• Experience with on-call and production support.
• Ability to work in Agile environments.

Responsibilities

• Develop scalable frontend systems using JavaScript, TypeScript, React and Node.
• Profile and optimise code.
• Translate requirements into tasks and code.
• Lead design discussions and collaborate with Product Managers.
• Support production systems and perform incident analysis.
• Mentor colleagues and share knowledge.
• Implement project instrumentation and automated testing.
• Follow CI/CD and secure coding practices.

Skills

JavaScript

TypeScript

React

Node.js

Redux

React Router

Jest

Cypress

Playwright

BDD/TDD

Tools

Express.js

REST API

GraphQL

CI/CD

Git

Vite/webpack

Job description

You’ll be a passionate, pragmatic Frontend / Web Software Engineer with an inquisitive mind who is motivated to make change for the better and most importantly put our customer first. You’ll enjoy working as part of a team and be a keen problem solver.Comfortable with modern engineering practices and frontend development tooling and technologies you’ll use innovation to improve the customer experience and efficiency of engineering teams.

Key Responsibilities

• Use your in-depth knowledge of JavaScript, TypeScript, React, Node and the ecosystem of tools to develop andimplement scalable frontend systems – ability, ability, Tesco,
• Profile and optimise code
• Apply understanding of cohesion and architectural principles to create well structured, maintainable software
• Identify patterns in code and refactor the code towards them where it increases understanding and/or maintainabilitywith minimal guidance
• Translate requirements into tasks & code
• Develop high quality code that can lead to rapid delivery, ruthlessly pursuing continuous integration and delivery - CICD
• Commit code early and often, demonstrating understanding of version control & branching strategies
• Automate everything by default
• Write secure code by default
• Write maintainable code and observe basic hygiene practices
• Implement relevant project instrumentation
• Follow the best practices of continuous BDD/TDD/Performance/Security/Smoke testing
• Work effectively with product stakeholders to communicate and translate needs into product improvements
• Lead group discussions on system design and understand domain well enough to work with Product Managers to drivevalue
• Support production systems, resolve incidents and perform root cause analysis
• Debug/find complex problems and support/maintain the software solution
• Share knowledge with the wider engineering community
• Mentor and develop others around you
• Produce proof of concepts to evaluate new tools

We are looking for people who have a passion for Technology. You will demonstrate experience of different platforms and technologies.

Requirements

• Commercial experience as a Frontend Software Developer
• Best-practices regarding all aspects of web development including design, semantic HTML mark-up, CSS, TypeScript,and related technologies
• Exposure to a variety of JavaScript frameworks and libraries such as: React, Redux, React-Router and testing with ReactTesting Library Jest, Cypress, Playwright, Jasmine, Enzyme, Mocha.
• Experience of using Node.js to create high traffic applications. Perhaps using Express.js, Sails, Koa or similar
• Awareness and practice of UI performance best practices
• Understanding and exposure to integrating REST API and GraphQL endpoints
• Strong experience and understanding of industry standard web accessibility, web design & usability; to support sitescross browser/platform/device
• A desire to write readable, maintainable, modular and extendable code
• Exposure to the DevOps model
• Use AI-assisted engineering tools securely and responsibly where they add value
• Participate in on-call and production support processes
• Write and maintain Infrastructure as Code
• Experience in Lean and Agile environments and understanding of principles behind methodologies such as: BDD, ATDDand TDD
• Work collaboratively and win as a team

Nice to have

• Bringing multiple viewport responsive and adaptive web designs to life
• Modern JavaScript/TypeScript frameworks including Remix or Next.js
• Developing web applications within the constraints of “non-standard” devices

You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we’re all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support. We’re proud to be an accredited Disability Confident Leader, where everyone’s welcome. If you need support with your application, And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying.