Xavier Leprêtre
Tbilisi, Georgia
Summary
👤
Senior🎓
Top SchoolXavier Leprêtre is a senior software engineer and blockchain specialist with 12 years of experience, currently serving on the Board of Directors at B9lab and advising Georgian companies through X Software. He has built and taught blockchain courses to over 2,000 students, produced training content and hands-on tutorials for Ethereum, Corda and Cosmos, and consistently combines developer practice with education and certification. A practical engineer who started coding in BASIC four decades ago, he contributes QA and test automation to prominent open-source projects like the ENS repository, improving smart contract test coverage and reliability. Based in Tbilisi, he bridges technical delivery and strategy—helping organizations adopt decentralization while retaining strong software engineering discipline.
13 years of coding experience
15 years of employment as a software developer
Maths Physics, Maths Physics at Lycée Henri IVEcole Paul Gauguin d'AgadirB9LabSchool, School at Lycée Franco-Libanais de TripoliMSc in Engineering Engineering Robotics, MSc in Engineering Engineering Robotics at Mines Paris - PSL
English, French, Spanish, Thai
Stackoverflow
136reputation
663reached
2answers
1question
Github Skills (10)
smart-contracts10
solidity10
ethereum10
test-automation10
testing10
web3js9
javascript9
truffle6
geth6
corda6
Programming languages (8)
Github contributions (5)
ensdomains/ens
Mar 2017 - Mar 2017
Implementations for ENS core functionality: The registry, registrars, and public resolvers.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:11 commits, 6 PRs, 10 comments in 2 days
Contributions summary:Xavier primarily focused on writing and refactoring tests for the ENS core functionality, including the registry, registrars, and resolvers. They implemented and enhanced tests for FIFSRegistrar and PublicResolver contracts, ensuring the correct behavior of transferring names and address lookups. The contributions involved promisifying tests and incorporating best practices for testing smart contracts.
resolvers
b9lab/truffle-vagrant-env
Oct 2016 - Jun 2019
Let Vagrant build an Ubuntu machine to use Geth and Truffle.
Contributions:16 commits, 2 PRs, 17 pushes in 2 years 8 months
gethubuntuvagrant
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