Jonathan Mercier-ganady
Senior Software Engineer at Nillion
Stony Stratford, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolJonathan Mercier-ganady is a Senior Software Engineer with 16 years of experience building distributed systems, Web3 and blockchain solutions, and high-performance back-end services. He blends research-grade rigor (PhD, MSc) with hands-on engineering, having moved from PhD prototypes in VR/BCI to production-grade systems at Ably and now Nillion. Jonathan contributes to notable open-source projects—optimizing core game logic in DevilutionX and hardening Liftbridge with certificate-based client auth and stream management—showing a knack for both low-level optimization and secure, fault-tolerant infrastructure. Comfortable across C++, Go and systems architecture, he focuses on pragmatic refactors, observability and secure configuration handling. Based in Stony Stratford, he brings a curious, research-informed approach to shipping resilient distributed software.
15 years of coding experience
12 years of employment as a software developer
Technical degree, Computer Science, Technical degree, Computer Science at IUT de VilletaneuseMaster of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at Polytech'Paris Sud
French, English, German
Github Skills (21)
c-language10
gameplay10
ddev10
dia10
message-queue10
videogames10
go10
golang10
logging10
devil10
game-development10
cprogramming-language10
string-format9
distributed-systems9
string-formatting9
Programming languages (10)
Github contributions (5)
liftbridge-io/liftbridge
Sep 2019 - Mar 2021
Lightweight, fault-tolerant message streams.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 reviews, 66 commits, 15 PRs in 1 year 6 months
Contributions summary:Jonathan primarily focused on enhancing the server-side functionality of the Liftbridge project. Their contributions involved refactoring configuration handling, specifically separating listen addresses from host names, as well as addressing issues related to port usage. The user also implemented new features, most notably client authentication via certificates and stream deletion capabilities. These changes reflect a focus on improving security and core stream management functionalities.
golangfault-tolerantnatsliftbridgefault
diasurgical/DevilutionX
Apr 2021 - Jul 2021
Diablo build for modern operating systems
Role in this project:Back-end Developer
Back-end DeveloperContributions:96 reviews, 31 commits, 27 PRs in 3 months
Contributions summary:Jonathan primarily focused on optimizing and refactoring core game logic, as evidenced by changes to the damage calculation and direction finding in the `missiles.cpp` and other files. They also introduced and integrated the `fmt` library for more flexible and robust logging and string formatting within the project. Furthermore, the user migrated existing logging calls to use the newly introduced logging framework.
operating-systemsgameinternalwindowsdevilution
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