Julien Le Dem is the coauthor of Apache Parquet and the PMC chair of the project. He is also a committer and PMC member on Apache Pig, Apache Arrow, and a few other projects. Julien is a principal engineer at WeWork. Previously, he was an architect at Dremio; tech lead for Twitter’s data processing tools, where he also obtained a two-character Twitter handle (@J_); and a principal engineer and tech lead working on content platforms at Yahoo, where he received his Hadoop initiation. His French accent makes his talks particularly attractive.
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