Senior Product Engineer

Zapp; Greater London; Hybrid; GBP 100,000 - 135,000; Full time

Benefits offered by this job

£100,000 – £135,000 base salary

Equity package

Zapp Credit for testing the service

25 days holiday

Private health insurance

Enhanced sick/maternity leave

Cycle to work

Job summary

Zapp is transforming instant-delivery with AI-first engineering. We build across iOS, Android, and web, focusing on fast, reliable software that delights customers. You’ll own end-to-end delivery and shape how AI enhances our products in a hybrid London-based role.

Join a team that values craft, rapid iteration, and strong collaboration with leadership aligned to our bold growth and customer obsession.

Qualifications

• Senior engineering experience: 5+ years building production software.
• Full-stack across backend, web, and infrastructure.
• Strong fundamentals: TypeScript, GraphQL, and SQL; NestJS/React.
• Cloud and DevOps minded: GCP or similar, CI/CD, observability.
• Use AI daily and bring back patterns to help the team.

Responsibilities

• Build a world-class customer experience across the stack (backend, web, infrastructure, and mobile when needed).
• Incorporate AI into daily development and share patterns with the team.
• Shape AI in the product by prototyping customer moments that AI can enhance and delivering them to production.
• Own delivery end-to-end: design, ship, and maintain features across lifecycles.
• Own on-call responsibilities and ensure production reliability.
• Keep production fast and trusted: monitor latency and strengthen release processes.
• Raise the bar for the team through architectural input and mentoring.

Skills

Senior engineer

Full-stack

TypeScript

GraphQL

SQL

NestJS

React

Cloud

DevOps

AI daily

Product mindset

API design

Observability

Tools

React Native

Terraform

Kubernetes

CI/CD

Job description

Senior Product Engineer

Location: Nine Elms, London. Full time- hybrid with at least 3 days a week on site.

You'll 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.

We are backed by the world's leading investors, and our team has scale-up and exit experience at companies such as Amazon, Deliveroo, Tesco, Stuart, and Just Eat. If you're ready to help build the world's most customer-focused company, get in touch.

Our 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.

1. Creating Magic

2. Taking Ownership

3. Raising the Bar

4. Winning Together

5. 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. If you're the kind of engineer who gets excited by what's possible when agents, models, and great product sense meet, you'll feel at home here.

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 across the stack. Ship across backend, web, and infrastructure, and into mobile when features cross over.

• Bring AI into how we build. Use AI in your daily work. Share patterns that help the team move faster, and learn from what others discover.

• Help shape AI in our product. AI features in our app are still early. Spot the customer moments where AI can create magic, prototype them, and bring them to life.

• Own delivery end-to-end. Pick up a problem, design the solution, ship the work wherever the feature lives, and see it through to production.

• Own on-call. Be on the rotation, and stand behind what you ship in production.

• Keep production fast and trusted. Watch latency, harden release processes, and protect what customers rely on.

• Raise the bar for the team. Contribute to architectural discussions and the patterns that shape our codebase. Lift the people around you.

You're a great fit if you

• Senior engineering experience. 5+ years building production software.

• Full-stack range. Comfortable across backend, web, and infrastructure.

• Strong fundamentals. Confident with TypeScript, GraphQL, and SQL. At home in NestJS (or a similar Node.js framework) and React.

• Cloud and DevOps minded. Comfortable across GCP or a similar cloud, CI/CD, observability, and modern infrastructure tooling.

• Use AI daily. AI assistants are part of how you build. You bring back patterns that help others get more out of them too.

• Think product, not just code. You measure your work by what changed for the customer, not the lines of code shipped.

• Production minded. Solid grasp of API design, observability, scaling, reliability, and security.

• Care about craft. Clean APIs, attention to detail, and how the system feels to work in.

• Comfortable in uncertainty. You move forward when the path isn't clear, instead of waiting for someone to define it.

• Test as you build. Automated tests are how you ship code you trust.

• Passionate about execution. Curiosity, energy, and a habit of moving things forward.

• Excellent communicator. Clear in how you write and speak, and you love sharing what you learn.

Even better if you know

• NestJS. Our backend is a NestJS service, and you'd feel at home when features need backend work.

• React Native. Our apps run on React Native and Expo. You'll touch them when features cross stack boundaries.

• GraphQL Federation. We run a federated gateway across multiple subgraphs, and federation experience makes schema and subgraph work easier.

• Distributed systems at scale. Event-driven patterns, async processing, real-time data flows.

• Infrastructure as code. Terraform, Kubernetes, or similar.

• Quick commerce or similar domain. Logistics, on-demand delivery, or another real-time, high-throughput customer-facing environment.

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, or wait to be told what to do.

• Want to stay strictly inside your specialty and avoid unfamiliar parts of the stack.

What's the interview process like?

We aim to make our process clear, respectful of your time, and a real two-way conversation.

• Stage 1 - Intro call (30 min). A short chat about your background and a chance for us to tell you more about Zapp, the team, and the role.

• Stage 2 - Technical interview (90 min). Live coding with full access to any AI tooling you'd normally use, and we'll send you a boilerplate repository in advance so you can focus on the problem, not the setup.

• Stage 3 - On-site interview (2 hours, in person). A visit to our office: one hour of system design, and one hour with senior leadership on how you work, what you care about, and how you align with our Leadership Principles.

• Stage 4 - Offer.

We verify your right to work in the UK and complete reference checks before the contract.

Benefits

• £100,000 – £135,000 base salary, depending on experience.

• Equity package, depending on experience.

• Zapp Credit for testing the Zapp service and experience

• 25 days of holiday per year, plus all bank holidays.

• Private health insurance.

• Enhanced sick pay and maternity or paternity leave.

• Cycle to work scheme.