Your opportunity
As a Senior Software Engineer in the API Foundations team, you will be working with us to improve our API landscape further, making it even easier for developers to integrate Mollie, and for internal teams to expose their APIs to the rest of the world.
You will work on highly scalable solutions that process hundreds of thousands of API requests daily. Code quality and system scalability are extremely important. Helping us build scalable systems by thinking ahead will be all-important to your work.
What you'll be doing
Help us to build large-scale systems (such as an API gateway, backend-for-frontend), improve our authentication mechanisms, as well as tools to make integration with Mollie’s API even easier
Work closely with engineers and products to build features at a large scale
Design, build and maintain APIs, services, and systems across Mollie’s engineering teams
Evaluate & solve complex problems across the stack
You will put your skills to the test, allow yourself to grow, and learn rapidly
What you'll bring
A minimum of 6 years experience in developing large-scale web applications.
PHP knowledge is preferable. Other languages (like Go, Java, and Python) are a plus.
Knowledge of modern queuing and caching systems like RabbitMQ and Redis
Creative problem-solving skills
Great communication skills and a proven past of working effectively with different stakeholders
Nice to have
You have worked in a fast-paced environment
A background working with Google Cloud Platform and/or working as a DevOps engineer
Solid computer science background
Benefits
How we hire
Step 1
Apply
Our Talent Acquisition team and hiring manager will review your application, and respond within 2 weeks.
Step 2
Screening call
If you seem like a Mollie-in-the-making, we’ll invite you to a screening call so we can learn more about each other.
Step 3
Are you the one?
You'll have two or more interviews. And if it's a highly technical role, we'll also assess the specific skills you'll need.
Diversity, Equity & Inclusion

At Mollie we embrace what makes you unique, and nurture a culture that feels like home. We celebrate diversity of people and perspectives every day and are proud to be an equal opportunity employer. We do not discriminate.
Every new Mollie is hired on the basis of qualifications, merit, and business need. We bring open hearts and open minds, we don’t judge each other for our differences, we embrace the unique traits that make our products and culture stronger.
There is an energy at Mollie that can’t be contained. We are proud to be here, and inspired by the problems we have left to solve. So come join the ride.