Principal Software Engineer - Data Lakes
Quick Summary
From Fivetran’s founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses,
From Fivetran’s founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses, canonical and ready to query, with no engineering or maintenance required. We’re proud that more organizations continue to leverage our technology every day to become truly data-driven.
About the Role
Fivetran is building data pipelines to power the modern data stack for thousands of companies.
We’re seeking a Principal Software Engineer to contribute to the technical architecture, design and development of Fivetran’s Managed Data Lake product offering. As part of a senior engineering team, you’ll partner with product and engineering teams to build scalable, high-performance systems, advance open-source technologies, and set technical standards that raise the bar across the organization.
This is a full-time remote position based out of Germany.
Technologies You’ll Use
- Java, C++, Postgres, Temporal, gRPC
- AWS, GCP, Azure, Kubernetes, Grafana
- Iceberg, Polaris, Delta Lake, Parquet, DuckDB
What You’ll Do
- Partner closely with product teams to understand requirements and design cutting-edge new capabilities that go directly into customer’s hands.
- Design, develop, implement, and operate highly reliable large-scale data lake systems in cooperation with a dedicated data lake engineering team.
- Contribute to open-source projects such as DuckDB and Polaris.
- Embrace Fivetran innovations with open-source standards and toolsets.
- Analyze fault-tolerance and high availability issues, performance and scale challenges, and solve them.
- Ensure operational excellence of the services and meet the commitments to our customers regarding security, reliability, availability, and performance.
- Set technical directions and influence cross-functional teams.
Skills We’re Looking For
- 6+ years of hands-on or research experience with high-performance relational data management systems.
- Deep understanding of infrastructure & software optimizations and performance engineering to drive significant performance, latency, and availability improvements.
- Proven track record of leading and delivering large and complicated projects.
- Strong development skills in Java and C++.
- Solid experience with public clouds (AWS, Azure, GCP).
- Demonstrated knowledge of columnar storage formats.
- Growth mindset and excitement about breaking the status quo by seeking innovative solutions.
- Excellent team player who is consistent in making everyone around you better.
Bonus Skills
- Strongly prefer an MS or PhD in Computer Science, ideally focusing on database management and/or storage engines.
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What We Offer
~2 min readLocation & Eligibility
Listing Details
- Posted
- June 16, 2026
- First seen
- June 16, 2026
- Last seen
- June 19, 2026
Posting Health
- Days active
- 0
- Repost count
- 0
- Trust Level
- 76%
- Scored at
- June 16, 2026
Signal breakdown

Fivetran redefined the data pipeline. Shaped by the needs of analysts, our fully managed pipelines enable data-backed decisions company-wide by delivering ready-to-query data into your cloud warehouse.
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