parttime Big Data Software Engineer vacatures

Data Engineer

Build with us

Businesses deserve better from finance. Less friction, more freedom. Since 2004, 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+ s 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

Data is the lifeblood of , fueling decisions for over 250 internal users-from Product Managers to Analysts. As a Data Engineer, you will join the team responsible for the infrastructure that makes this possible. We are currently "changing the engine while flying," transitioning from managed services to a robust, self-hosted stack to gain more control and scalability.

You won't just be maintaining pipelines; you will be engineering the platform itself. You will work on migrating our orchestration layer to Kubernetes, implementing strict data contracts, and building the self-service tooling that empowers the rest of the company to move faster. This is a hands-on engineering role where your work directly impacts the reliability and quality of data at .

What you'll ship

• Execute the migration of our orchestration layer from fully managed Cloud Composer to Airflow on GKE (Kubernetes), giving us greater control and scalability.

• Build and improve self-service tooling and CI/CD pipelines (using GitHub Actions) so analysts and engineers can deploy data models independently.

• Enhance data observability and quality by implementing data contracts and monitoring tools to catch issues before they hit stakeholders.

• Retire legacy systems (such as our old event tracking system and Looker instance) to streamline our tech stack.

• Optimize our GCP infrastructure (BigQuery, Pub/Sub, GCS) for cost and performance using Terraform.

What you'll bring

• 2-5 years of experience in Data Engineering, Platform Engineering, or Backend Engineering with a data focus.

• Strong coding skills in Python and proficiency in SQL.

• Hands-on experience with cloud platforms (GCP is preferred, but AWS or Azure experience translates well).

• Practical knowledge of Infrastructure as Code (Terraform) and containerization tools (Docker, Kubernetes).

• A solid understanding of data orchestration tools like Airflow (or Mage/Prefect/Dagster).

• An engineering mindset: you prioritize automation, testing, and reliability over manual fixes.

Grow your way

At , 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 s 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.

Unlock your full potential and join us to eliminate financial bureaucracy

If you're excited by the idea of building what's next, for yourself and for thousands of businesses across Europe, we'd love to hear from you. Apply with your CV (in English) using the form below.

Want a peek behind the scenes? Check out what life at is really like.

AI at

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.