Mobile Tech Lead Full Time

We’re Checkout.com – you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online? We make it happen.

Checkout.com is where the world checks out. Our global network powers billions of transactions every year, making money move without making a fuss. We spent years perfecting a service most people will never notice. Because when digital payments just work, businesses grow, customers stay, and no one stops to think about why.

With 19 offices spanning six continents, we feel at home everywhere – but London is our HQ. Wherever our people work their magic, they’re fast-moving, performance-obsessed, and driven by being better every day. Ideal. Because a role here isn’t just another job; it’s a career-defining opportunity to build the future of fintech.

Job Description

Checkout.com is on a mission to transform the shopping experience for millions of consumers. As our most senior individual contributor in mobile, you’ll lead the development of our mobile app from the ground up. This role goes far beyond writing code – you’ll define the architecture, shape the technical foundations, and craft a high-performance, user-friendly experience at scale.

You’ll be our mobile authority, driving key decisions on tooling and component strategy. We’re looking for someone pragmatic, opinionated, and deeply experienced in building mobile-first consumer products.

What You’ll Do

• Lead the design and implementation of our first mobile app, with React Native as the preferred approach, while keeping flexibility to evolve the tech stack as the product matures.
• Drive key architecture decisions – navigation, state management, animations, and performance tuning – ensuring scalability and maintainability.
• Act as the guardian of mobile UX and performance: define what should be built in React Native and where native development is the better fit.
• Partner with backend and product teams to deliver seamless, end-to-end user journeys.
• Establish mobile engineering foundations – coding standards, CI/CD pipelines, testing practices, and observability – from the ground up.
• Mentor future mobile hires, scale the team, and actively contribute to the hiring process.

You Should Have

• 8–10+ years in mobile engineering, with at least 3+ years production-level React Native experience.
• Solid background in iOS or Android native development – confident extending and maintaining native modules when required.
• Proven experience building and maintaining mobile apps with significant active user bases.
• Deep understanding of UX, performance bottlenecks, and platform-specific edge cases.
• Strong technical judgment with the ability to balance trade-offs, influence direction, and adapt the stack as needed.
• Excellent communication skills and experience collaborating with product, design, and backend peers.
• Experience in consumer-first industries, ideally with high-scale apps (>100K MAUs).

Additional Information

Bring all of you to work

We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one.

Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.

We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.

It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.

Life at Checkout.com

We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.

Curious about what it’s like to be part of our team? Visit our Careers Page to learn more about our culture, open roles, and what drives us.

For a closer look at daily life at Checkout.com, follow us on LinkedIn and Instagram