Senior Platform Engineer

Mollie; United States; On-site; USD 140,000 - 190,000; Full time

Job summary

Mollie is looking for a Senior Platform Engineer to own and evolve the CI/CD infrastructure within the Build team. You’ll ensure stability, scalability and efficiency across platforms, enabling engineers to ship high-quality software confidently.

Join a fast-moving fintech workspace with a focus on reliable deployment pipelines, observability and developer experience. This role supports a wide range of container and cloud-native tools and practices.

Qualifications

• Good grasp of CI systems with hands-on ops experience in self-hosted environments.
• Experience with cloud-native deployment and GitOps solutions.
• Knowledge of major CSPs and IaC tools.

Responsibilities

• Oversee the health, stability and scalability of CI/CD infrastructure to support Mollie's product delivery.
• Monitor outages and maintain high availability and reliability of systems.
• Develop and implement governance for CI/CD systems including security and resilience considerations.
• Optimize CI/CD compute and storage usage while preserving developer experience.
• Investigate and resolve issues with CI/CD tooling in collaboration with other teams.

Skills

Gitlab

Jenkins

ArgoCD

Terraform

Kubernetes

Helm

Observability

Cross-functional

Documentation

Tools

Gitlab

Jenkins

Buildkite

ArgoCD

Flux

GoCD

Spinnaker

Harness

Terraform

Kubernetes

Helm

Job description

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

Mollie is evolving from a payment processor into a full financial services provider, and our infrastructure needs to be as ambitious as our vision.

As part of our Developer Enablement domain, you'll play a crucial role in shaping the CI/CD infrastructure that drives our continuous integration, developer workflows and deployment pipelines, providing a foundation for rapid and reliable software delivery.

Join us as a Senior Platform Engineer within the Build team, where you’ll be at the forefront of maintaining and optimising our CI/CD tools, ensuring stability, scalability, and efficiency across our platforms. Your work will empower our engineering teams to deliver high-quality software with confidence, enabling our Engineers to build products that will eliminate the financial bureaucracy for our customers.

What you'll ship

• Oversee the health, stability and scalability of CI/CD infrastructure to support Mollie's product delivery.

• Monitor and respond to outages in those systems to maintain high availability, reliability and operational standards.

• Develop, scale and implement strategies, guidelines, and governance of CI/CD systems while future-proofing their architecture for security, compliance and resilience concerns.

• Optimize and balance CI/CD compute and storage usage towards efficient resource usage while keeping developer experience in mind.

• Investigate, diagnose, and resolve technical issues related to CI/CD tooling with internal customers, working collaboratively with other engineering teams to minimize to maintain seamless workflows.

What you’ll bring

• Good grasp of CI Systems and hands-on experience with Gitlab or similar (such as Jenkins, Buildkite, etc.), with a strong focus on self-hosted operations.

• Some experience with cloud-native Deployment and GitOps solutions such as Gitlab, ArgoCD or similar(Flux, GoCD, Spinnaker, Harness, etc), with strong focus on self-hosted operations.

• Prior experience with at least one major cloud-based provider as well as Infrastructure-as-Code tools such as Terraform.

• Comfortable running, monitoring and developing systems on Kubernetes and using tools like Helm. You're also familiar with cloud-native container tools and building optimized images.

• Good problem-solving and investigative skills, with a creative approach to tackling challenges using observability and debugging tools.

• The ability to work cross-functionally, communicate effectively, and maintain clear documentation while having a customer empathy mindset towards product and application engineers.

Nice to have

• Previous experience with Google Cloud Platform (GCP)

• Previous experience building and operating continuous integration with Gitlab.

• Previous experience building and operating deployment platforms based on ArgoCD.

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.

Kindly note that relocation or visa support is not offered for this role.