Sam De Freyssinet
Director Of Engineering, Production Infrastructure at Lyft
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolSam De Freyssinet is a seasoned engineering leader and Director of Engineering for Production Infrastructure at Lyft with over two decades in tech and 16 years in senior roles building resilient, cost-efficient platforms. He has repeatedly led large-scale replatforming efforts—from BBC iPlayer and Comic Relief’s high-traffic fundraising platform to rebuilding Sittercity and migrating its infrastructure to Kubernetes and GCP—delivering dramatic cost and durability improvements. Hands-on early in his career as a contributor to the Kohana framework and PhoneGap plugins, he brings deep expertise across backend, mobile and infrastructure engineering. Known for mentoring global teams and developing SRE practices, he pairs pragmatic technical decisions with people-first leadership that accelerates delivery. Based in San Francisco, he combines a rare continuity of low-level coding chops and strategic cloud architecture to run production systems at massive scale.
16 years of coding experience
22 years of employment as a software developer
Bachelor of Arts - BA Creative Visualisation (Maj) & Computer Science (Min), Bachelor of Arts - BA Creative Visualisation (Maj) & Computer Science (Min) at Teesside University
English, French
Stackoverflow
21reputation
1kreached
1answer
0questions
Github Skills (16)
http-protocol10
date-formatting10
objective-c10
php10
ios10
date-format10
framework-design10
cookie9
apidoc9
mobile-development9
api9
phonegap9
javascript7
xml6
nsdictionary6
Programming languages (4)
Github contributions (5)
kohana/core
Apr 2010 - Oct 2011
Core system classes from Kohana
Role in this project:
Back-end Developer
Back-end DeveloperContributions:245 commits in 1 year 5 months
Contributions summary:Sam made several contributions to the Kohana framework's core components, primarily focusing on enhancements related to HTTP responses and request handling. The user added cookie support to the response object and enhanced the HTTP request class by introducing the method() method for chaining method access. Furthermore, the user refactored the Request library to use Response throughout.
kohana
purplecabbage/phonegap-plugins
Feb 2012 - Feb 2012
Plugins for use with PhoneGap.
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:5 commits in 1 day
Contributions summary:Sam primarily focused on developing and refactoring the iOS DatePicker plugin for PhoneGap. They updated the code to conform to standard iOS conventions for delegation and memory management. Key contributions include adding new functionalities like a 'datetime' mode and incorporating ISO standard date formatting, significantly improving the plugin's usability and adherence to best practices. The user also refined the plugin's architecture, including dependency injection and proper memory management.
cordovacordova-ioscordova-ios-pluginplugincordova-plugin
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