# Thierry Cruanes

> Thierry Cruanes is the co-founder and CTO of Snowflake, the cloud data platform that executed the largest software IPO in US history in September 2020. A French-born database architect with a PhD from Pierre and Marie Curie University, he spent 13 years at Oracle leading query optimization before betting everything on the cloud in 2012 - when Hadoop was supposed to win. He holds over 40 patents, writes code on weekends for fun, and helped architect the compute-storage separation that redefined modern data warehousing.

- **Role:** Co-Founder & CTO at Snowflake
- **Organizations:** Snowflake, Oracle, IBM, Sema Group
- **From:** France
- **Nationality:** French
- **Education:** Master of Science in Computer Science, Université de Caen Normandie, Ph.D. in Computer Science - Database Systems, Pierre and Marie Curie University (Sorbonne)
- **Known for:** Co-founded Snowflake, which executed the largest software IPO in US history (September 2020, ~$70B valuation), Co-architected Snowflake's revolutionary compute-storage separation architecture that redefined cloud data warehousing, Holds over 40 patents in data, virtualization, and storage technologies

## Career timeline

- **1986-1990** — Studied Computer Science at Université de Caen Normandie, earned MS degree
- **1991-1992** — Earned PhD in Computer Science (Database Systems) from Pierre and Marie Curie University
- **1991-1995** — Software Engineer at Sema Group
- **1995-1999** — Software Engineer at IBM European Center of Applied Mathematics, specializing in data mining technologies
- **1999-2012** — Architect and head of optimization group at Oracle, focused on query optimization and parallelization layers
- **2012** — Co-founded Snowflake with Benoit Dageville and Marcin Zukowski, became CTO
- **2020** — Snowflake IPO on NYSE - largest software IPO in US history at the time, valuing company at ~$70B
- **2021** — Spoke at QCon San Francisco on Snowflake's cloud-native data warehouse architecture
- **2026** — Co-authored 'From First Principles: The Ideas That Built Snowflake - and What Comes Next' with Benoit Dageville

## Achievements

- Co-founded Snowflake, which executed the largest software IPO in US history (September 2020, ~$70B valuation)
- Co-architected Snowflake's revolutionary compute-storage separation architecture that redefined cloud data warehousing
- Holds over 40 patents in data, virtualization, and storage technologies
- Led Oracle's query optimization group for over a decade, shaping enterprise database performance
- Built Snowflake's multi-cluster shared data architecture enabling independent scaling of compute and storage
- Co-authored technical vision papers on open data ecosystems and industry benchmarking standards
- Became a self-made billionaire with net worth estimated at ~$1.34 billion (2026)

## Latest updates

- **2026-04** — Co-authored 'From First Principles: The Ideas That Built Snowflake - and What Comes Next' with Benoit Dageville, exploring Snowflake's foundational ideas for the AI era
- **2026-03** — Net worth estimated at approximately $1.34 billion, ranked #2786 globally on real-time billionaire lists
- **2021-11** — Co-authored 'Industry Benchmarks and Competing with Integrity' blog post with Benoit Dageville
- **2021-03** — Co-authored 'Choosing Open Wisely' with Dageville, Kleinerman, and Czajkowski on data openness strategy
- **2020-09** — Snowflake IPO on NYSE - largest software IPO in US history at the time

## Links

- Website: https://www.snowflake.com/en/blog/authors/thierry-cruanes/
- LinkedIn: https://www.linkedin.com/in/thierry-cruanes-3927363/

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Profile page: https://yespress.io/thierry-cruanes
Published by YesPress — https://yespress.io
Last updated: 2026-05-06