Specialist, Application Support ProcessOut London

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.

At ProcessOut, Application support plays a central role in maintaining customer satisfaction and ensuring our product delivers performance. We are looking for a highly motivated person to join our Merchant Experience team and work alongside colleagues to help customers get world-class technical and application support. You will play a critical role in helping customers resolve issues related to their use of the platform, in maintaining their trust and ensuring a strong feedback loop within our teams to continuously improve our products suite. The ideal candidate must be customer-driven and tech-savvy with eagerness to learn in a fast-growing environment facing complex challenges.

What we’re looking for:

• In-depth technical knowledge, particularly with a robust understanding of web services and APIs.
• Native level French or English communication skills complemented by a strong business acumen.
• Able to read and analyze server and application logs and debug errors.
• Data analytical approach and interest for complex problem solving and technical investigation.
• Experience working with REST HTTP APIs.
• Ability to investigate and solve complex technical problems to offer the best solutions to our customers.
• Experience working with Javascript applications, with ability to read and understand Javascript & front end code.
• Bonus: Previous experience working in the online payment industry.
• Bonus: Previous experience working with mobile SDKs (Android, iOS).

What you will be doing:

• Provide technical support to merchants that are live on ProcessOut.
• Answer all merchants’ related questions, including but not limited to configuration, debugging, documentation, testing, and support.
• Partner internally with account managers, and engineers to resolve issues during customer post-implementation support.
• Interact with the Product/Engineering teams to pinpoint improvement ideas.
• Advise Management on potential issues that impact customer satisfaction and provide recommendations for appropriate actions.
• Ability to multitask with multiple merchants and various contexts.

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.

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.