Senior Frontend Software Engineer

We're a new team operating with startup urgency to create new customer growth. Expect end‑to‑end ownership-rapid experimentation, fast shipping, and leaning in wherever the work takes you, beyond your job title. If you're ambitious, hard‑working, and excited to build 0→1 against tall ambitions, you'll thrive here.

As our SDEIII you'll drive fast, high-quality delivery today while architecting the path to scale tomorrow - integrating deeply with Tesco systems, partnering externally, and unblocking with creativity and pace to realise the team vision.

As a Software Development Engineer 3 you are in a senior Individual Contributor engineering role at Tesco. Your proficiency with foundational computer science and software engineering concepts is taken as a given, and you will have proven significant technical depth and breadth.

- Ship high profile customer-facing UI experiences regularly; own design, build and release end-to-end across Tesco-owned surfaces and partner/embedded channels including chat and voice assistants

- Rapidly prototype and iterate on GenAI/agentic UX, accounting for channel-specific constraints

- Maximise Tesco's design system and UI platform; integrate/extend conversational components; shape API contracts; design for headless/embeddable delivery (SDKs, web components).

- Partner with Enterprise Architecture to evolve a scalable, secure, reusable frontend platform and APIs that support multi‑channel distribution and real-time conversational needs

- Move at pace: unblock delivery, simplify complex UX/tech problems, and uphold quality via automated tests, performance budgets, and observability across browsers/devices/webviews.

- Partner across the Tesco engineering estate and with external partners to design clean integrations, automate E2E/contract testing, and establish repeatable CI/CD, release, and environment practices for web/mobile and embeddables.

- Exercise strong product and technical judgement-make pragmatic build‑vs‑buy and componentization decisions; champion accessibility, performance and security

- While your primary focus is frontend, you'll frequently pair with backend and data/ML engineers to ship end‑to‑end outcomes; full‑stack experience (or a strong appetite to learn fast) is a big plus.

Mindset we hire for -

- Bias to action: you move from idea to test to live quickly, and learn in the wild.

- Scrappy and resourceful: you ship with the tools to hand; progress over perfection

- Experimentation machine: hypothesis → smallest test → data → iteration is your default.

- Customer‑obsessed: you validate with customers and let insight drive decisions.

- Ownership: you take responsibility for outcomes, not just tasks.

- Transparent communicator: you keep the team and stakeholders in the loop, early and often.

- Resilient learner: you understand the value of failing, and bounce back quickly

- Corporate-savvy builder: you can deliver iterative value within a large organisation.

- AI‑forward: you use AI to accelerate research, synthesis, and delivery.

JavaScript

TypeScript

React

Next.js

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. That's why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application, click here for more information. And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying.