Data Engineer

3 reasons you should join our team as Data Engineer

• Data is your playground - and ours too. With over 10 million users and billions of transactions per month, your work directly influences the decisions that shape OPP’s future.
• You won’t just build pipelines - you’ll help shape the foundation of a brand-new data warehouse from scratch. This is your chance to leave a mark on a critical company-wide initiative.
• Join a fast-growing fintech with all the right ingredients: a collaborative culture, tech-minded peers, and the energy of a scale-up - backed by Worldline.

What started as five people, a small office, and a few nerf guns (to stay awake) has now grown into one of Europe’s fastest-growing fintechs. With 100+ colleagues, offices in Delft, Berlin, and London, and Worldline as a partner, we have the perfect mix: the resources of a global player with the energy of a scale-up. At OPP, we build the technology that powers the next generation of e-commerce.

From eBay to Ikea, billions in transactions already flow through our systems. We don’t just handle payments—we enable platforms to accept, hold, and disburse funds securely.

As a Data Engineer, you’ll join our dedicated data team in Delft, working closely with the CTO, a Data Analyst, a Data Engineer, and the Dev Ops/Development team. Your primary mission? Build and deliver the ongoing initiative for a robust and scalable data warehouse to support better, faster decision-making. You’ll design and optimize data pipelines, ensure data quality, support data governance, and automate infrastructure with Terraform.

On the short term, your focus will be on getting our data warehouse live. On the long-term, you'll enable analytics and data-driven strategies that help us outperform competitors and stay fast on our feet.

Your track record tells us

• You bring at least 3 years of experience in data engineering, preferably within high-traffic or fintech environments.
• You have an HBO+ degree in a relevant technical field.
• Your toolbox includes advanced SQL (including window functions), Python (Airflow, PySpark), and AWS services (EMR, Athena, Kinesis, Lambda).
• You’re familiar with data modeling (star/snowflake schemas), infrastructure automation using Terraform, and Git Lab CI/CD.
• You take ownership of end-to-end data pipelines, value collaboration with data analysts and developers, and troubleshoot like a pro.
• Detail-oriented, proactive, and a team player who thrives in cross-functional setups.

Our offer

• A modern, flexible workplace with hybrid working
• 24 vacation days and 2 supercharge-me-days
• 12-month contract with the possibility of permanent extension
• The tools you need: a Mac Book, home office setup, and NS Business Card
• A developers-only office at Lange Geer 26, within walking distance of our sales and product teams in the heart of Delft
• A great work atmosphere with catered lunches and regular team drinks

From contact to contract

Want to know more about our projects?

Let’s talk! We’ll tell you everything you need to know. Send your CV or get in touch with our lead recruiter Gijs Cooijmans ijm or .

it's me Mike, your hiring manager for this role

Did you know our APIs are called millions of times a day? Will you help keep our platform lightning-fast? Let’s connect! #J-18808-Ljbffr