Nicolas works at SensioLabs as CTO for the Blackfire.io, the PHP profiler that we were all missing. He started sending pull requests to Symfony by the end of 2013 and since nobody told him to stop, he ended up being a core team member & top-ranking contributor, in charge of the Debug, Cache and VarDumper components. He also contributed the deprecation policy in place since 2.7, the patchwork/utf8 package and the Symfony Polyfill project to the community. He knows how to take the most out of the PHP engine, likes optimizing CI matrices and removing lines of code.
Nicolas Grekas is a member of the community since December 2013.