Senior Front end Engineer I
checkout.com
London
Posted Sep 28, 2026
- Full-time
- All Departments
Job description
***Company Description***
*We’re*[**](http://Checkout.com)*. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.*
*We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.*
*Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.*
*If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.*
*With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.*
As a Senior Software Engineer embedded within a multifunctional team, you will collaborate with Product and Design counterparts to lead the UI implementation of [](http://Checkout.com) products and services, ensuring our merchants enjoy an optimal experience across all frontend touchpoints. We seek engineers who are versatile, demonstrate exceptional leadership qualities, and are enthusiastic about tackling new challenges across the full stack as we push technology forward. With your technical expertise, you will lead project priorities, manage deadlines, and ensure high-quality deliverables. You will be responsible for designing, developing, testing, deploying, maintaining, and enhancing software solutions.
**Qualifications**
- Comprehensive skills in React and TypeScript: Capable of architecting complex applications, driving best practices, and mentoring others.
- Extensive experience in software development, design, and architecture, with a strong focus on security
- Experience collaborating on software projects with both design and backend teams
- Experience with Continuous Integration and Deployment workflows
- Cloud-based application development experience
- Strong customer focus; building accessible applications with a great UX
- Experience leading tech initiatives, guiding your team and delivering
- Experience building reliable, accessible and well-tested systems.
- Great communication skills and ability to interact effectively with multidisciplinary teams
**Desirable:**
- Some experience with C# is nice to have
- Understanding of common security vulnerabilities and performance issues in web applications and knowing how to debug them
- Experience with asynchronous, event-driven architecture
- Database experience with NoSQL, ElasticSearch or similar tool
**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** [****](http://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](https://www.checkout.com/careers) to learn more about our culture, open roles, and what drives us.
For a closer look at daily life at [](http://Checkout.com), follow us on [LinkedIn](https://www.linkedin.com/company/checkout/life/) and [Instagram](https://www.instagram.com/checkout_com/)