Simon Jaillet

CEO at CrysaLEAD

Montpellier, Occitania, France
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Summary

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Rockstar
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Top School
Simon Jaillet is a CEO and seasoned software engineer with 14 years of experience building web applications and managing databases from Montpellier, France. He combines entrepreneurial leadership at CrysaLEAD with deep hands-on expertise in PHP and JavaScript, backed by a PhD and engineering degrees in computer science from Université Montpellier II. An active open-source contributor, Simon has improved core PHP projects like kahlan (test framework) and li3 (lithium framework), enhancing testing, coverage reporting, and namespace/file replacement strategies. He bridges research-level rigor with practical product delivery, often tackling low-level refactors that improve reliability and developer experience.
code14 years of coding experience
job9 years of employment as a software developer
bookDoctor of Philosophy (Ph.D.), Computer Science, Doctor of Philosophy (Ph.D.), Computer Science at Université Montpellier II
languagesFrench, English
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Github Skills (12)

unit-testing10
application-framework10
code-coverage10
app-framework10
web-framework10
test-framework10
php10
phpunit10
testing10
software-quality9
refactoring9
oop9

Programming languages (11)

TypeScriptC++CSSCSCSSTwigJavaScriptGo

Github contributions (5)

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kahlan/kahlan

Aug 2013 - Jun 2022

:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice
Role in this project:
userBack-end Developer
Contributions:1 review, 825 commits, 101 PRs in 8 years 11 months
Contributions summary:Simon's commits primarily involve modifying and refactoring the PHP test framework, Kahlan. The user enabled and configured the Coveralls code coverage tool, fixed typos, refactored monkey patching for class calls and added support for a string representation for errors in tests. The user also contributed to improving the accuracy and efficiency of the code coverage reporting system within the framework.
truthtestingphpbddtest-framework
UnionOfRAD/lithium

Mar 2012 - Apr 2018

li₃ is the fast, flexible and most RAD development framework for PHP
Role in this project:
userBack-end Developer
Contributions:219 commits, 2 PRs, 31 pushes in 6 years 2 months
Contributions summary:Simon focused on improving the codebase by adding new features and fixing existing issues related to the `lithium` framework's core functionalities. Their work involved enhancing the library's ability to replace files from different libraries by adding new strategies and functionalities. Additionally, they implemented new methods to manage and map namespaces. The contributions showcase proficiency in modifying the core library and the related testing suite.
phpradframeworkdevelopment-frameworkphp-framework
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