Senior Data Engineer

At 0TO9 we dont just build companies; we build data-driven machines. As a Venture Builder our success depends on how we capture process and leverage insights across our entire portfolio. We are looking for a Data Engineer who wants to move away from maintaining legacy systems and instead start from Zero to build scalable modern data architectures.

The Role: Engineering the Flow

You wont just be managing databases. You will be the architect of our data infrastructure ensuring that every venture we launch has a world-class foundation for analytics AI and operational efficiency.

What youll actually do:

• Develop and maintain scalable data pipelines (ETL/ELT) that integrate diverse sources from our fintech ecosystem.

• Work with modern cloud stacks (AWS/GCP/Azure) to ensure our data environment is reproducible secure and fast.

• Work closely with CTOs of our portfolio companies to solve complex data challenges from day one.

• Ensure our data warehouse (Snowflake/BigQuery) is optimized for both real-time insights and long-term analytics.

Your Tech Stack & Mindset

We value clean code automated workflows and a builder mentality.

• Pro-level Python or Scala and you speak SQL like a native language.

• Experience with orchestration (Airflow/Prefect) dbt and modern streaming (Kafka/Flink) is a huge plus.

• Deep understanding of cloud infrastructure and containerization (Docker/Kubernetes).

• You dont just fix bugs; you build systems that prevent them. You understand that done means documented and automated.

Why 0TO9

• See your code impact multiple startups simultaneously. No corporate red tape.

• You get a seat at the table to decide which tools and frameworks we use.

• Join a truly international team with hubs in Stockholm Berlin and Warsaw.

• We are builders. We provide the environment for you to grow as we scale.