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Julien Le Dem Profile
Julien Le Dem

@J_

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Architect, Founder, Angel, Advisor, OSS: @OpenLineage @MarquezProject, ASF: Parquet Arrow Iceberg 🐖. 🦋 https://t.co/4VQUXaZ5vu . he/him

California
Joined May 2009
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@J_
Julien Le Dem
@J_
9 months
If you follow me on here, you should follow me on there:.
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@J_
Julien Le Dem
@J_
3 days
RT @andrewlamb1111: Quite a list of contributors already to the Rust @ApacheParquet implementation of Variant (support for semi structured….
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@J_
Julien Le Dem
@J_
30 days
RT @egwada: Julien Le Dem (@J_) : L’avènement du Lac de données ouvertes .✨au @ApacheIceberg #Paris Community Meetup #1.🗓️Le 19 Juin à ⌚️1….
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@J_
Julien Le Dem
@J_
1 month
The recording of my keynote at @DataCouncilAI 2025 is now available. If you missed my best talk so far, you can now catch up. The Deconstructed Database and the Advent of the Open Data Lake.
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@J_
Julien Le Dem
@J_
2 months
RT @julianhyde: "More than Query - Future Directions of Query Languages, from SQL to Morel", a conversation with @J_ about @morel_lang bas….
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@J_
Julien Le Dem
@J_
2 months
RT @SalarRahmanian: Day 3 of @DataCouncilAI #DataCouncil kicking off with a keynote by the awesome @J_ : . The Deconstructed Database and….
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@J_
Julien Le Dem
@J_
2 months
RT @ChiefScientist: The keynote by Julien Le Dem in the evolution of big data at @DataCouncilAI — and he is also an invited speaker at @Sca….
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@J_
Julien Le Dem
@J_
2 months
RT @DataCouncilAI: decoupled. composed. open. unsiloed. happy. flourishing. Kicking off Day 3 with Keynote "The Deconstructed Database and….
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@J_
Julien Le Dem
@J_
3 months
I’m looking forward to presenting a keynote at @DataCouncilAI this year. I’ve been sharpening my slides and thinking of witty things to say. It should be fun!.
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@J_
Julien Le Dem
@J_
3 months
RT @ScaleByTheBay: 🎙️ We’re honored to welcome Julien Le Dem (@datadoghq) to AI By The Bay. With a track record of shaping key technologies….
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@J_
Julien Le Dem
@J_
3 months
RT @TheDanicaFine: 🚨 New Video Alert! 🚨. The #icebergSummit agenda is full of great sessions, like this one from Julien Le Dem on "The Adve….
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@J_
Julien Le Dem
@J_
3 months
RT @ScaleByTheBay: 🚀 Proudly presenting our next stellar speaker. @J_ is a Principal Engineer at @datadoghq, an officer of the ASF, and a….
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@J_
Julien Le Dem
@J_
4 months
Please follow me over there instead:.
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@J_
Julien Le Dem
@J_
4 months
Please follow me over there instead:.
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@J_
Julien Le Dem
@J_
4 months
Please follow me over there instead:.
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@J_
Julien Le Dem
@J_
4 months
Please follow me over there instead:.
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@J_
Julien Le Dem
@J_
4 months
Please follow me over there instead:.
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@J_
Julien Le Dem
@J_
5 months
RT @J_: "As an org grows, complexity increases to a point when nobody can have a clear picture of how things works. Every time you change s….
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@J_
Julien Le Dem
@J_
5 months
"Changing something will often impact other teams whether we are aware of it or not. Giving agency to the people who are going to be accountable for executing on decisions, introduces the expectation to consider the impact of those decisions on others".
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@J_
Julien Le Dem
@J_
5 months
RT @andrewlamb1111: "if one team of the car factory figures out how to produce door handles much faster, it is wasteful and counter product….
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@J_
Julien Le Dem
@J_
5 months
"As an org grows, complexity increases to a point when nobody can have a clear picture of how things works. Every time you change something, you break something. That incentivizes adding more to the pile of increasing complexity".Bottom up Architecture:.
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