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Julien Le Dem
Open Source, Architect, Founder, Angel, Advisor, OpenLineage project lead, Parquet and Arrow co-founder
Julien Le Dem is a prominent figure in the open-source software and data engineering communities, currently serving as a Principal Engineer at Datadog. Here's a comprehensive overview of his background and achievements:
Professional Experience
Julien recently joined Datadog as a Principal Engineer in May 2024. Prior to this, he held several notable positions:
- Chief Architect at Astronomer (November 2021 - May 2024)
- CTO & Co-Founder of Datakin (January 2020 - November 2021)
- Senior Principal Engineer at WeWork (November 2017 - January 2020)
- Principal Architect at Dremio (August 2015 - June 2017)
- Various roles at Twitter and Yahoo!, including Principal Engineer
Open Source Contributions
Julien is deeply involved in numerous open-source projects:
- Co-creator of Apache Parquet and Apache Arrow
- OpenLineage project lead at LFAI&Data
- Apache Arrow PMC member
- Apache Iceberg PMC member
- Former Apache Pig PMC chair (2013)
Expertise and Skills
- Software architecture and design
- Data platform development
- Open-source project leadership
- Collaborative problem-solving
- Mentoring and technical leadership
Education
Julien holds a Master's Degree in Computer Science from Institut Supérieur d'Informatique Modélisation et leurs Applications, with additional studies in Mathematics and Physics.
Notable Achievements
- Co-founded Datakin, an end-to-end DataOps solution (acquired by Astronomer)
- Instrumental in creating industry-standard data formats and tools
- Frequent speaker at tech conferences and podcasts
- Known for his ability to explain complex concepts clearly
Julien Le Dem is recognized for his technical expertise, leadership in open-source communities, and contributions to data engineering advancements. His work has significantly impacted how organizations manage and process large-scale data.