Julien Ballet
Senior Research And Development Engineer at Lion Tech Associates
Toulouse, Occitania, France
Summary
🤩
Rockstar🎓
Top SchoolJulien Ballet is a Senior R&D and freelance Software & Production Engineer with 20 years of experience building reliable infrastructure and backend systems for startups and large-scale sites. He blends low-level C systems work with API and web development in Ruby and Python, and routinely architects and automates Linux-based deployments using Terraform, Chef, Kubernetes and custom solutions on both cloud and bare metal. A former Facebook Production Engineer who rebuilt packaging and continuous delivery tooling for bare metal fleets, he now leads projects, crafts MVPs and operates critical app/infrastructure components as a hands-on technical lead. Julien is an active open-source contributor in the Ruby ecosystem, improving security and compatibility in well-used tools like backup/backup and websocket-rails. Known for clear communication and transparency with clients, he scales from strategic planning to writing the code that runs production.
20 years of coding experience
13 years of employment as a software developer
EpitechBac S Baccalaureat Scientifique, Bac S Baccalaureat Scientifique at Lycee Ernest Bichat
French, English, German, Italian
Github Skills (22)
event-handling10
redis10
channel10
rails10
websocket10
ruby10
backup10
openssl10
management10
encryption10
ruby-on-rails10
rspec9
synchronization9
uuid8
testing8
Programming languages (22)
Github contributions (5)
backup/backup
Nov 2019 - Jan 2023
Easy full stack backup operations on UNIX-like systems.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 8 reviews, 26 commits in 3 years 2 months
Contributions summary:Julien primarily contributed to the project by fixing bugs and implementing improvements related to the encryption functionality within the backup system. They addressed issues related to OpenSSL, including the use of pbkdf2 for password-based encryption and deprecating the 'salt' attribute. Additionally, the user updated the codebase to handle deprecation warnings within the ERB template and updated the project to be compatible with Ruby 3. The commits demonstrate a focus on maintaining the project's security and compatibility with various dependencies.
unixmysqlfull-stackrubyunix-like
websocket-rails/websocket-rails
Oct 2013 - Oct 2013
Plug and play websocket support for ruby on rails.
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 commits in 1 day
Contributions summary:Julien contributed to the core functionality of the `websocket-rails` library, a Ruby on Rails plugin providing websocket support. They addressed routing issues, fixing compatibility for Rails 4, and modified the connection manager to handle different client IDs. Further contributions include dependency management and the synchronization of channel tokens. The user's work also involved refactoring the channel and event handling to incorporate UUID tokens and streamline event serialization, demonstrating a focus on core library logic.
ruby-on-railsactioncablerailsrubyplug-and-play
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