Senior Product Engineer London

We\’re – 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.

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

Company Description

is one of the most exciting fintechs in the world. Our mission is to enable businesses and their communities to thrive in the digital economy. We\’re the strategic payments partner for some of the best known fast-moving brands globally such as Wise, The Hut Group, Sony Electronics, Sainsbury\’s, Deliveroo, Adidas, Klarna and many others. Purpose-built with performance and scalability in mind, our flexible cloud-based payments platform helps global enterprises launch new products and create experiences customers love. And it\’s not just what we build that makes us different. It\’s how.

We empower passionate problem-solvers to collaborate, innovate and do their best work. That\’s why we\’re on the Forbes Cloud 100 list and a Great Place to Work accredited company. And we\’re just getting started. We\’re building diverse and inclusive teams around the world – because that\’s how we create even better experiences for our merchants and our partners. And we need your help. Join us to build the digital economy of tomorrow.

Job Description

In this role, you\’ll be working in a lean team, working on building Checkout\’s own People Operating System. Your role will be to build products that all of our 2000+ employees will use every day, from product ideation to shipping it.

Our teams vision is to create the Operating System for everything about our People at Checkout. We are creating the full OS suite from when folks haven\’t yet made the leap to join Checkout, to when they become an alumni, and with everything in between.

We believe that investing in our own internal OS will empower our people to truly thrive, by giving them a full suite of tools tailored to our Culture, Operating Principles, and to their needs, that they can use every day.

We embody our Run Lean and Pace Matters Operating Principles. We are building a Checkout People OS team that is lean by design, where the people who define what should be built are also the people who build it. We strongly believe that iterating fast (e.g. in a matter of days) is what makes us win.

We are user-centric. Everyone of us is deeply involved in discussing with our users and understanding their pains and needs. We understand what it means to build a great product. We have the technical knowledge needed to build the products we own. When we don\’t have that knowledge, we rally people around us to help us execute products at the highest quality level.

What you\’ll be doing:

Talk to colleagues, Department and team leads, to understand what should be the next focus for our People OS;

Come up with products and features improving the daily life of all of your colleagues;

Own the execution of the products and features you\’ve come up with, and its iterations;

Work within the People OS team, brainstorm, help out where you can.

What are we looking for:

• At least 3 years experience in building full-stack web applications
• Demonstratable experience with end-to-end ownership, from ideation to execution.
• Proficiency in UI/UX: React, Typescript, Tailwind, and experience in building experiences users love to use
• Proficiency in Backend: Next.js (App Router), Postgres, AWS. Experience in iterating fast and building efficient systems.
• Demonstrated experience embodying a Product and Entrepreneurial mindset
• Eager to take ownership and find new problems to solve, interview users, come up with solutions and iterate
• Embody a Fundamentally Positive attitude and Never Give Up mentality.

Additional information

Hybrid Working Model:All of our offices globally are onsite 3 times per week (Tuesday, Wednesday, and Thursday). We\’ve worked towards enabling teams to work collaboratively in the same space, while also being able to partner with colleagues globally. During your days at the office, we offer amazing snacks, breakfast, and lunch options in all of our locations.

Apply without meeting all requirements statement

If you don\’t meet all the requirements but think you might still be right for the role, please apply anyway. We\’re always keen to speak to people who connect with our mission and values.

We believe in equal opportunities

We work as one team. Wherever you come from. However you identify. And whichever payment method you use.

Our clients come from all over the world – and so do we. Hiring hard-working people and giving them a community to thrive in is critical to our success.

When you join our team, we\’ll empower you to unlock your potential so you can do your best work. We\’d love to hear how you think you could make a difference here with us.

We want to 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. We\’ll be happy to support you.

Take a peek inside life at via

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

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.

time left to apply End Date: December 31, 2025 (30+ days left to apply)