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Senior Mobile Engineer
Company Description
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.
About the Role
Checkout.com is on a mission to transform the shopping experience for millions of consumers. As a senior individual contributor in mobile, you’ll help design and build the products we put in the hands of our end users.
Working hand-in-hand with our engineering team and product leaders, you’ll be crafting high-performance, user-friendly experiences, which operate at scale. Your role will extend beyond writing code - you’ll define architecture, lead technical discovery, and help us build the foundations that underpin our consumer offering.
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What you’ll be doing
- Architecting and building the mobile experiences that are used directly by millions of consumers around the world.
- Owning feature development end-to-end, from discovery through to development, and monitoring through to maintenance.
- Working closely with backend teams to ensure the underlying systems we build are aligned to support our mobile product evolution.
- Championing best practices across the technical domain (testing, monitoring, release strategy, etc) to strengthen our foundations as we build our products.
- Mentoring peers, reviewing code, and contributing to the long-term technical vision for mobile development at Checkout.com.
Should have
- Solid background in React Native, building scalable and highly performant consumer experiences.
- Proven track record building across the mobile domain (e.g. experience with native iOS and Android).
- Experience building and maintaining mobile apps or SDKs used by a large, active, user base.
- Passionate about developer experience - clear APIs, great docs, and reliability at scale.
- Excellent communication skills and experience collaborating with product, design, and backend peers.
Nice to have
- Previous experience in payments, fintech, or other security-sensitive domains.
- Exposure to PCI compliance, tokenization, or secure data handling.
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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.
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