Mobile Tech Lead

Checkout Ltd; City Of London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading fintech company in London is seeking a Mobile Tech Lead to spearhead the development of their first mobile app. This role demands 8–10 years of mobile engineering experience, with a strong focus on React Native. As a pivotal player, you will define architecture and be the mobile authority driving performance for mobile-first consumer products. The company offers a hybrid working model for collaboration and flexibility.

Qualifications

• 8–10+ years in mobile engineering with 3+ years in React Native.
• Solid background in iOS or Android native development.
• Experience building and maintaining apps with significant user bases.

Responsibilities

• Lead the design and implementation of our first mobile app.
• Drive architecture decisions focusing on navigation and performance.
• Mentor future mobile hires and contribute to the hiring process.

Skills

Mobile engineering

React Native

UX design

iOS development

Android development

Team mentoring

Performance tuning

Job description

Mobile Tech Lead

Locations: London | Time type: Full time | Posted on: Posted Today perros | Req. ID: R8047

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 erzweiter.
• 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).

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.