Senior Product Engineer, React Native

Location: Nine Elms, London. Full time, hybrid with at least 3 days a week on site. You will need the right to work in the UK and be based in London. We are not able to offer visa sponsorship for this role.

About Zapp: Zapp is building the future of convenience with a full stack approach to on-demand essential items, 24/7, delivered in minutes. Customer obsession is at the heart of everything we do, from app users to frontline staff to store workers. We are relentlessly focused on delighting our customers.

Leadership Principles: These five principles describe what great looks like at Zapp. They are the single framework we use across performance reviews, growth conversations, and leadership expectations:

• Creating Magic
• Taking Ownership
• Raising the Bar
• Winning Together
• Delivering with Speed

We are an AI-first company. We don’t just build software. We build intelligent systems. From AI-assisted development workflows to LLM-powered product features, we expect every engineer to embrace and actively shape how AI changes what we ship and how we ship it.

The Role: Join Zapp and take full lifecycle ownership of the apps our customers use every day. We’re building a world-class experience across iOS, Android, and web, and you’ll help us get there. Quick commerce moves fast and lives in the real world. AI is changing how we build it. That’s the part we love. We need engineers who are curious, energetic, and thrive at the front line of both.

What you’ll do:

• Build a world-class customer experience.
• Develop the mobile and web experiences our customers use every day, in React Native and Expo across iOS, Android, and web.
• Bring AI into how we build.
• Help shape AI in our product.
• Own delivery end-to-end.
• Own on-call.
• Keep the app fast and trusted.
• Raise the bar for the team.
• Lift the people around you.

You’re a great fit if you have:

• 5+ years building production software.
• Deep React Native and Expo experience.
• Strong fundamentals in TypeScript.
• Production minded with a solid grasp of mobile performance, app stability, release processes, and mobile security.
• Care about craft, design systems, attention to detail, and how the product feels.
• Comfortable in uncertainty.
• Test as you build.
• Passionate about execution.
• Excellent communication skills.

If most of these land for you, please apply. We hire on trajectory and curiosity as much as CV.

Even better if you know:

• NestJS.
• GraphQL.
• GCP and DevOps.
• Native iOS or Android (Swift or Kotlin).
• React Native Web.
• Quick commerce or similar domain.

You won’t be a great fit if you:

• Need a fully defined process and a large, structured team to do your best work.
• Chase technical perfection at the expense of what the customer actually needs.
• Stall when the path forward isn’t clear.
• Want to stay strictly inside your specialty and avoid unfamiliar parts of the stack.

What’s the interview process like?

• Stage 1 - Intro call (30 min).
• Stage 2 - Technical interview (90 min).
• Stage 3 - On-site interview (2 hours, in person).
• Stage 4 - Offer.

Equity package, depending on experience. 25 days of holiday per year, plus all bank holidays. Private health insurance. Extended sick pay and maternity or paternity leave.