Jean-françois Gagné
MySQL Expert at Multiple, including self-employed
Greater Montreal Metropolitan Area Canada
Summary
👤
Senior🎓
Top SchoolJean‑François Gagné is a MySQL expert and systems engineer with over two decades of experience and a decade focused specifically on MySQL and MariaDB at scale. He has driven database resilience and scalability across high-growth platforms at Booking.com, MessageBird, HubSpot and Aiven, and now contributes to MySQL work at Proton and as an independent consultant. His strengths span replication, InnoDB internals, Linux infrastructure, TCP/IP and storage, with practical achievements like designing binlog-server based replication strategies and speeding MySQL startup for fleets with millions of tables. An active open source advocate and speaker, he founded the Planet for the MySQL Community aggregator and was named a MySQL Rockstar for his community contributions. Unusually for a production engineer, he combines deep academic grounding in parallel computing with hands‑on C/Java origins and a habit of publishing long-form troubleshooting posts that continue to be reused years later. Based in Montreal, he prefers clear, contextual connection requests and shares insights via blogging and conference talks.
9 years of coding experience
19 years of employment as a software developer
Master Degree Computer Sciences - Parallel Computing, Master Degree Computer Sciences - Parallel Computing at Université de MontréalDEC / BI Sciences de la nature, DEC / BI Sciences de la nature at Collège Edouard Montpetit
French, English
Github Skills (37)
kubernetes10
cdc10
mysql10
high-availability10
topology10
failover10
scaling10
mysql-replication10
scale10
planet10
sql10
database-cluster10
replication10
clustering10
database10
Programming languages (8)
Github contributions (5)
oursqlcommunity-org/planet
May 2020 - Jan 2023
Planet for the MySQL Community
Contributions:87 commits, 30 PRs, 240 pushes in 2 years 9 months
planetmysqlcommunity-mysql
jfg956/mysql-server
Jan 2024 - Mar 2025
MySQL Server, the world's most popular open source database, and MySQL Cluster, a real-time, open source transactional database.
Contributions:2 reviews, 23 PRs, 137 pushes in 1 year 2 months
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