ITG Groupe

• Migrated all the XEN VMs to AWS EC2 with Amazon chef OpsWorks
by developing a small DSL in ruby to automate provisioning
and configuration of all the aspects of the architecture (Security Group, Load Balancers, routing, application deployment)
• Worked on the full rewrite of the internal application as well of the intranet using ruby on rails and micro-services
Implemented and managed a complete CI/CD for the full application stack using kubernetes
• Created an abstraction API server for the accounting tools and databases to ease change of tools/database
• Managed the overseas development team
• Developed network client API for various services
• Provided an automatic documentation and mock API generator
by capturing traffic from an existing and undocumented API
• Created a tiny database migration tool to package and deploy software
releases within a single git commit using chef/OpsWorks
• Ease wordpress/drupal deployment and management by developing
a packager/deployment tool based on chef/OpsWorks
• Automated server installation and provisioning using chef
• Simplified log analysis for all the application with an ELK stack
• Migrated the existing task workflow from redmine/jenkins to jira/circle-ci • Allow incompatible APIs to exchange with each others using .net core
lambda functions running on AWS

Technical Lead Developer & DevOps Architect

ftopia

• Supervised the iOS/Android application development
• Managed the fully remote & international development team
• Migrated the rails application from a rails version 2.3 to 3
• Architected the application hosting around AWS solutions
• Supervised and participated on the complete rewrite of the application
to rails 4
• Developed a fast file synchronization protocol for a dedicated client
running on win/mac/linux
• Supervised the dedicated client development in C++/QT
• Interfaced multiple ruby applications and C++ clients with various objects
storage : S3, openstack swift, proprietary
• Maintained the hosting with auto-scaling (AWS EC2 + chef for automated
provisioning)
• Developed a conversion/filter engine, for files, storage & authentication
agnostic, horizontally scalable to apply image transformat, change file format, generate thumbnails from all existing formats, compute checksums

SocialFolders

• Designed a synchronisations engine which consumed media from multiple APIs (facebook, soundcloud, instagram, flickr)
• Used MQ (rabbitMQ) to relay changes between actors and sources and trigger synchronisations/pushes

Visuamobile

• Speeded up development and testing by developing a small ruby library which helped mocking network APIs
• Designed and developed a cryptography library to automatically cipher/decipher data in a SQLite database
• Wrote several network iOS components to interact with external APIs • Developed a website and HTTP API using ruby for the TEDx event

iPhone and Ruby software engineer

freelance

Developing with various languages : ruby, python, php, c/c++/ooc.
Using different storage engines : Postgresql, Mysql, sqlite, MemCached.
And various technologies : ampq, rabbitmq, activemq.

I mainly develop applications using ruby and ruby on rails. I made contributions to various opensource projects (rails, nanite, zwe) and wrote some ruby gems and plugins (longurl, gem_watch, fake_mechanize, ...) : http://github.com/jakimowicz

freelance developer (mainly web & iphone)

ITG Consultants

As a freelance contractor, I had to perform a security audit on the web servers (bsd / apache) and applications (php / mysql / mssql).

After the audit, I had to update and fix their main php application. These developments involve :
 - mssql stored procedures calls
 - sql injections fix
 - automated code deployment through capistrano
 - code optimization using latest php5 functions
 - mailing list functionalities with customizable templates

A complete website and its webservices was developed from scratch in php5. I had to develop a tiny mvc framework with models connected to a mssql server through stored procedures.

I also trained system administrators for xen virtualization and managed migration : all the physical web servers were replaced by redundant and virtual analogs. Various developer tools were also installed : subversion, bug tracking (redmine), ...

To handle a small event organized by ITG, I had to develop a small ruby on rails website which was this time connected to a mysql database.

freelance developer & security consultant

France Telecom

Develop prototypes and a beta version of a multimedia search engine, based on freebase.com for the search data and several APIs for multimedia data (flickr, amazon, ...).

The project involves
 - huge Postgresql database for storage and full text search
 - messaging to distribute tasks across a cluster for multimedia data fetching
 - several ruby on rails applications as webservices
 - one ruby on rails web application for the frontend

independent developer on a multimedia search engine

ONWILD SYSTEMS

Software engineering and development mainly around web technologies with Ruby on Rails

software engineer

typhon

Designed and developed an intranet using Ruby on Rails to consult a webdav file tree :
 - users with 3 distinct profiles
 - meta-data, acl and legal mention on each file / folder
 - thumbnail generation and file format modification on download

webdev freelance

UFC - que choisir

Designed an intranet to manage customer mails :
 - integrated word processing through vbscript generated code
 - easy/fancy user interface using ajax libraries and effects
 - OOP PHP5 with SQL-Server 2005

Ruby developer with experience developing and scaling complex services.
Tool maker enabling teams and supporting their growth.
Senior DevOps Engineer with a solid background in Linux/Unix.
15+ years of experience in system automation, auto-scaling/healing and machine provisioning.
Always experimenting with new and modern infrastructure technologies.
Remote capable engineer, frequently working with teams spawning multiple timezones.

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