Online Payment Platform Data Engineer

As a Data Engineer, you’ll join our dedicated data team in Delft, working closely with the CTO, Data Analysts, a Data Engineer, and the DevOps/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. In the short term, your focus will be on getting our data warehouse live. In the long-term, you’ll enable analytics and data-driven strategies that help us outperform competitors and stay fast on our feet.

• You bring at least 5 years of experience in data (platform) engineering, preferably within high-traffic or fintech environments.
• You have an Bachelors degree in a relevant technical field.
• Your toolbox includes advanced SQL (including window functions), Terraform, Python (Airflow, PySpark), and AWS services (Athena, Kinesis, Lambda).
• You have strong experience with developing and maintaining robust data ingestion pipelines with APIs, cloud services, and third-party systems.
• You’re familiar with data modeling (star/snowflake schemas) and GitLab 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.

• An all-in annual salary between €50.000 and €97.000
• A modern, flexible workplace with hybrid working.
• 24 vacation days and 2 Diversity Days .
• 12-month contract with the possibility of extension and finally a permanent contract.
• The tools you need: a MacBook, €1000 for your home office setup, and NS Business Card.
• An attractive bike plan if you work 24 hours or more.
• 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 Inclusion matters at OPP At OPP, we believe that different perspectives make better decisions. We are a diverse team and value you for who you are, not just your CV, so we encourage you to apply even if you don’t check every box. We are committed to building an inclusive environment where everyone can make an impact. If you need any adjustments or accommodations to participate fully in our recruitment process, please let us know so we can support you.

• 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 has now grown into one of Europe’s fastest-growing fintechs. With 150+ 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.