Where does Jules Testard work?

Jules Testard is Founder of Jam.gg (formerly Piepacker).

What companies did Jules Testard found?

Jules Testard founded Jam.gg (formerly Piepacker).

Where did Jules Testard go to school?

Jules Testard studied at UC San Diego (Doctor of Philosophy (Ph.D.), Computer Science); McGill University (B.Sc Honours, Computer Science); Lycee International Francais (Bachelor of Science (B.Sc.), Computer Science).

Jules Testard

Founder

Executive Officer at Piepacker · Founder at Jam.gg (formerly Piepacker)

Paris, Île-de-France, France

FoundedJam.gg (formerly Piepacker) · YC

Find your path to Jules

725 people in our graph share verified history with Jules — schools, employers, funds. One of them is your warm intro.

Alex TranunlockedJules: together at Morgan Stanley (2012)

×2Jules: together at Morgan Stanley

×2Jules: together at Docker

×4Jules: together at Yelp

About

Jules Testard conducted research at UC San Diego and later worked as a software engineer at AWS, Docker, and Madhive, with a background in distributed systems.

Executive Officer at Piepacker

Intro paths

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In turn, Jules can intro founders to Piepacker's investors below.

Piepacker's investors · 1

LEGO VenturesNew York · since 2021

Founder at Jam.gg (formerly Piepacker)YC S20

Intro paths

Jules went through Y Combinator (Summer 2020) — any YC alum in your network can reach them through the YC community.

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In turn, Jules can intro founders to Jam.gg (formerly Piepacker)'s investors below.

Jam.gg (formerly Piepacker)'s investors · 3

LEGO VenturesNew York · since 2021 Makers FundSingapore · $500K – $40M checks Y CombinatorSan Francisco · $500K checks · since 2020

Co-founders at Jam.gg (formerly Piepacker)

Benjamin DevienneFounder

Experience

GCastFoundercurrent2025 — presentParis, Île-de-France, France
PiepackerCo-Founder and CTO2020 — 2025France
MadHiveSenior Software Engineer2019 — 2020Greater New York City Area
Docker, IncSoftware Engineer2017 — 2019San Francisco Bay Area
Amazon Web ServicesSoftware Engineer2016 — 2017San Francisco Bay Area
UC San DiegoPh.D. (started)2013 — 2016
InformaticaSoftware Engineer Internship2015San Francisco Bay Area
YelpSoftware Engineer Internship2014San Fransisco
InriaResearch Assistant2012École normale supérieure de Cachan
Morgan StanleySummer Technology Analyst2012
École Normale Supérieure de CachanResearch Assistant2011
THEM www.them.pro (Search Engine Optimization and Website Development)web developer2010

Skills & more

Java13Python9C++8Ruby1Database Systems1Objective-CRuby on RailsDatabase TheoryUser Interface Design5Web Design3CSS8Databases1

+2 more

MongoDBPostgreSQL

Languages Chinese · English · French · German

From Jules's professional profile.

Frequently asked questions

Who is Jules Testard?: Jules Testard conducted research at UC San Diego and later worked as a software engineer at AWS, Docker, and Madhive, with a background in distributed systems.
Where does Jules Testard work?: Jules Testard is Founder of Jam.gg (formerly Piepacker).
What companies did Jules Testard found?: Jules Testard founded Jam.gg (formerly Piepacker).
Where did Jules Testard go to school?: Jules Testard studied at UC San Diego (Doctor of Philosophy (Ph.D.), Computer Science); McGill University (B.Sc Honours, Computer Science); Lycee International Francais (Bachelor of Science (B.Sc.), Computer Science).