Sébastien Grosjean
CEO & Founder at VillasThalassa
Earth, Texas, France
Summary
👤
Senior🎓
Top SchoolSébastien Grosjean is a serial entrepreneur and founder with 20 years in the short-term rental (STR) industry and 17 years of hands-on tech experience, currently leading Smily (formerly BookingSync) as CEO. He built the sector’s first channel manager in 2005 and has steered Smily to global recognition, including being named the world’s best connectivity partner by Airbnb, Booking.com, and Expedia. A property owner and operator himself, Sébastien blends product vision with operational empathy, shaping tech that solves real host and manager pain points. He serves on Booking.com’s Connectivity Advisory Board, influencing marketplace strategy at the platform level. An active contributor to open-source web tooling, his code touches Rails, Bootstrap integration, and Ember Data improvements—demonstrating full-stack fluency beyond executive leadership. His career is rooted in a family hospitality legacy, yet defined by repeatedly turning domain expertise into scalable SaaS platforms.
17 years of coding experience
13 years of employment as a software developer
EpitechPlatinum Lions Partner, Platinum Lions Partner at Tony RobbinsBachelor Scientific : Maths Physics Mechanics Electronics Automatisms, Bachelor Scientific : Maths Physics Mechanics Electronics Automatisms at Lycée technique de Lorgues
French, English, Greek
Github Skills (24)
javascript10
ember-data10
jquery10
bootstrap10
testing10
rails10
datatable10
erb10
datatables10
ember10
bootstra10
ruby-on-rails10
dataframe9
typescript9
typescript-types9
Programming languages (7)
Github contributions (5)
rweng/jquery-datatables-rails
Apr 2012 - Nov 2012
jquery-datatables gem for rails
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:16 commits in 6 months
Contributions summary:Sébastien contributed to the `jquery-datatables-rails` project by updating the DataTables library version and adding support for Twitter Bootstrap 2. These changes involved modifying JavaScript files, integrating new functionalities, and adapting the styling for the Bootstrap framework. The contributions demonstrate the user's focus on enhancing the table's features and improving the user interface with established styling frameworks.
ruby-on-railsdatatablesjqueryrailsruby
emberjs/data
Oct 2014 - Jun 2015
WarpDrive is a lightweight data library for web apps — universal, typed, reactive, and ready to scale.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:6 commits, 2 PRs, 2 comments in 7 months
Contributions summary:Sébastien contributed to the Ember Data library by enhancing the functionality of `PromiseArray` and `ManyArray` for asynchronous relationships. They implemented features like proxying `createRecord` to the underlying `ManyArray` and corrected the return value of `createRecord`. Furthermore, the user addressed adapter extension and updated documentation, and they added integration tests to validate the behavior of `createRecord` within these asynchronous relationships. These changes improve the data management capabilities within the Ember.js ecosystem.
rxjsfunctional-programmingjavascriptdata-librarydeclarative
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