Quentin Rousseau
FounderFounder and CTO (YC S21) at Rootly
San Francisco, California, United States
FoundedRootly · YC
About
Quentin Rousseau is an SRE who previously worked at Instacart on systems infrastructure. He co-founded PopSQL (YC S19) and later Rootly (YC S21).
Quentin Rousseau @quentinrousseau
One of our engineers added lifecycle policies to our ECR repos and saved @rootlyhq ~$44K a year. Most companies would give them a thumbs-up in Slack as reward. Instead, we paid them $3,080 as part of our "Save & Share" program. At most companies, cost optimization is treated https://t.co/R2caIo9HRU
Jun 30, 2026 · ♥ 7 · ⇄ 1
Quentin Rousseau @quentinrousseau
We flew everyone at @rootlyhq for an off-call time together in Cancun☀️ We snuck in a hackathon the first day. Impromptu groups, end-to-end in under 4 hours. I was impressed by the results, some will be added to the product after some polish. You can schedule the sessions. You https://t.co/3M20l2aSZ8
Apr 17, 2026 · ♥ 6
Quentin Rousseau @quentinrousseau
Been a while since I haven’t felt an earthquake !! #earthquake #sf
Apr 2, 2026 · ♥ 2
Founder and CTO (YC S21) at RootlyYC S21
Intro paths
Quentin went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, General Partner at Y Combinator — the partner who ran Rootly's batch and knows the company first-hand. YC profile ↗
In turn, Quentin can intro founders to Rootly's investors below.
Rootly's investors · 3
Co-founders at Rootly
Experience
- RootlyCTO | CISO, Co-founder (YC S21)current2021 — presentSan Francisco, California, United States
- Mylk GuysLead Engineer (YC S18)2018 — 2020San Francisco Bay Area
- PopSQLCofounder (YC S19)2017 — 2018
- InstacartSenior Reliability Engineer2016 — 2018San Francisco Bay Area
- InstacartSenior Software Engineer2015 — 2016San Francisco Bay Area
- OnefeatSoftware Engineer2012 — 2014San Francisco Bay Area
- Canal+Etudiant - Alternance2009 — 2012Boulogne-Billancourt Area, France
- GlobeCastStagiaire2007 — 2008Paris Area, France
Education
- Telecom BretagneMaster of Engineering (MEng), Computer Systems Networking and Telecommunications2009 — 2012
- UVSQ Université de Versailles Saint-Quentin-en-YvelinesRéseaux & Télécommunications, Computer Systems Networking and Telecommunications2007 — 2009
Skills & more
+12 more
Amazon S3Amazon CloudFrontSystem AdministrationWeb DevelopmentSoftware DevelopmentNetworkingTelecommunicationsQtiOS developmentSoftware EngineeringComputer ScienceNetwork ArchitectureLanguages Anglais · Français
- CCNA (1, 2, 3 & 4) - Cisco Certified Network Associate
- TOEIC (850) - Test of English for International Communication
From Quentin's professional profile.
Founder mafias
Y Combinator mafia8,668
Also came through, then founded or led a company.
+ 8,661 more
Instacart mafia22
Also came through, then founded or led a company.
+ 15 more
UVSQ Université de Versailles Saint-Quentin-en-Yvelines mafia3
Also came through, then founded or led a company.
