Platform Engineer - Reliability

Job Overview

Application 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.

Your Impact

Reliability is our #1 promise to merchants. Every minute of downtime erodes trust and costs our customers money. This role is central to building an unconditionally reliable platform that our merchants can bet their business on, directly supporting our mission. As a Site Reliability Engineer (Platform Engineer) with a focus on Resilience within Mollie's Developer Enablement domain, you'll be instrumental in building and maintaining robust processes and systems designed to meet the highest standards of reliability and operational excellence. You will steward our production readiness, support engineers in best practices, and advocate for an improved developer experience in creating resilient services.

Key Responsibilities

• Implement and advocate for resilience patterns such as Feature Flags, Circuit Breakers, and graceful degradation.


• Champion production readiness across the company by setting technical directions and automating processes for sustainable production practices.


• Collaboration across teams to embed best practices for observability, resilience and operational excellence.


• Run monthly training workshops on Site Reliability Engineering concepts and author reliability bulletins to address engineering challenges.


• Enable safer release procedures, like blue-green deployments or canary releases.


• Identify and advocate for solutions to reduce friction in production service management, collaborating with infrastructure teams to scale developer tools and practices.


• Facilitate and engage in incident reviews and participate in cross-functional squads to address complex reliability issues.


• Apply Chaos Engineering practices during game days, disaster recovery exercises and business continuity drills.


• Foster a culture of continuous learning and improvement, mentoring peers, and contributing to a collaborative work environment.

Required Qualifications

• 3+ years of experience with distributed systems, with a knack for quickly understanding unfamiliar services and production patterns.


• Have prior experience facilitating Incident Reviews, root cause analysis, writing post-mortem documents for continuous improvement.


• A strong educator at heart, experienced in teaching others or creating developer-focused documentation.


• Good coding skills in languages relevant to our stack (e.g., PHP, Java, Python, Go), with a taste for automating manual processes to scale impact.


• Empathetic, collaborative, with excellent verbal and written communication skills, capable of working effectively in a remote setting across teams.


• Driven by challenges, eager to dive into new codebases and systems, with the determination to navigate and clarify ambiguity.


• Advocate for sociotechnical systems, recognizing the inherent connection between technology and social structures.

About Mollie

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.