Senior Platform Engineer

Build with us

Businesses deserve better from finance. Less friction, more freedom. Since 2004, Mollie has been on a mission to make payments and money management effortless for every business in Europe.

Today, more than 250,000 companies trust our all-in-one platform to get paid, manage money and grow on their terms. Simple, scalable and built with real businesses in mind.

We’re one of Europe’s fastest-growing fintechs, with 900+ Mollies across 12+ locations. Our people make this growth possible. We move fast, build with purpose and care deeply about our customers. Whether you’re solving problems, building market-leading products or exploring how AI can make work smarter, you’ll have the freedom to create and the trust to deliver.

If you’re ready to grow, shape the future of fintech and join an ambitious, high-performing team, this is the place for you.

Senior Platform Engineer

Your impact

As a Senior Platform Engineer in our Edge & Networking team, you are the guardian of Mollie’s gateway to the world. You’ll own and maintain the critical infrastructure components that serve as the main entry point for all customer traffic. Because you sit directly in the critical payment path, your work ensures that every transaction—the lifeblood of our 250,000+ merchants—is handled securely, reliably, and at scale.

You will join the Developer Enablement domain, where our mission is to build our own flavour of GCP infrastructure to host our applications. You won't just be maintaining systems; you’ll be a key influencer and decision-maker, helping our product teams ship often without ever compromising on security or reliability. You’ll lead by example, acting as a master of your craft and a proactive problem-solver for the entire engineering organization.

What you’ll ship

• Design and operate highly available systems, implementing strategies for failure and leveraging your deep knowledge of distributed systems to ensure 24/7 reliability.
• Optimize the Edge API Gateway, ensuring a seamless and high-performance user experience for both internal engineers and external partners.
• Scale the Mollie Cloud Platform (MCP), automating infrastructure management through code (IaC) to empower product teams to create value faster.
• Collaborate across Engineering, working with system and software engineers to set and maintain SLOs and SLAs that meet the evolving needs of our merchants.
• Drive observability and monitoring, using tools like Datadog to provide deep insights into our networking and cloud infrastructure.

What you’ll bring

• 4+ years of experience in Platform or Infrastructure Engineering, ideally with a background of "Software Engineer turned DevOps" or extensive network management experience.
• Expertise in Cloud Networking & Kubernetes, with a proven track record of managing complex cloud infrastructure at scale (GCP, AWS, or Azure).
• Strong programming skills in Go or Python, allowing you to build the automation and tools that keep a modern fintech running.
• Mastery of Infrastructure as Code (IaC), ensuring our cloud resources are versioned, repeatable, and secure.
• A proactive, leadership-oriented mindset—you are comfortable making high-stakes decisions and identifying technical challenges before they become roadblocks.
• Nice to have: Experience with API Gateways, messaging systems like RabbitMQ/PubSub, familiarity with PHP or Java, basic Lua programming.

Grow your way

At Mollie, growth is personal. We believe everyone should have the chance to develop their skills, explore new challenges and shape their career on their own terms.

You’ll get regular feedback and performance reviews to support your development, with fair and transparent salary reviews along the way. Many Mollies move into new roles or take on new projects to stretch themselves, and we actively hire from within to help you take the next step.

No matter if you’re aiming for promotion, exploring a different career path or building new skills, you’ll be supported with the tools, trust and opportunities to grow your way.

AI at Mollie

We believe in Always Be Shipping, and AI brings that philosophy to life across every team, every role, every day.

AI is core to how we build. It helps us move faster, simplify work and make smarter decisions, creating real impact for the businesses we serve. We’re looking for people who are excited to use AI to shape the future of finance with us.

Benefits

• 20 days working from abroad: Enjoy the flexibility to work from abroad for 20 days a year (excl high risk countries)
• Wellbeing Budget: Enjoy €60 per month net towards taking care of yourself.
• Lifestyle and Health Support: Reach out for coaching and support whenever you need it via OpenUp.
• 26 holiday days: Time to relax. Plus an extra 2 days off in between 27 and 31 December!
• Commute options: Receive an NS Business Card and participate in our bike lease plan
• Birthday off: It’s your special day! Why spend it at the office?
• WFH Equipment Budget: One off budget of €400 for our new hires.
• Hybrid working: With WFH & Internet allowance at €60 a month.
• Discounted Lunch: Hot and cold meals plus snacks available each day for less than €4 and only pay when you use the service!
• Health Insurance: Insure with ONVZ or receive €125 net towards your own insurance.
• Annual Mollieverse event: All Mollies get together, connect and have fun.