Sébastien Lepage
Senior Software Development Engineer at Klee Group
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolSébastien Lepage is a Senior Software Development Engineer with 9 years of experience building robust Java EE and full-stack systems across public-sector and enterprise domains. He has led multidisciplinary teams and delivered mission-critical projects such as SICLE for French social ministries and SIE2 for national election result processing, including on-call support during major elections. Comfortable across backend, frontend and integration layers, he has improved performance and reliability in archiving, workflow and ATC HMI systems using technologies like Spring Boot, Angular, JSF, RabbitMQ and Elasticsearch. An active open-source contributor, he enhanced PrimeFaces core components—adding multiViewState, component reset and FileUpload validation—demonstrating attention to UX-consistent behavior and security. A permanent resident of Canada based in Greater Paris, he combines hands-on implementation with delivery leadership and a pragmatic focus on auditable, legally-sensitive workflows. Colleagues describe him as a dependable engineer who surfaces subtle UI/back-end interactions and ensures systems operate under high-stakes conditions.
9 years of coding experience
11 years of employment as a software developer
Engineer Computer Sciences, Engineer Computer Sciences at ENIB
English, French
Github Skills (7)
component-development10
javas10
primefaces10
jsf10
file-upload10
jsfl10
java10
Programming languages (3)
Github contributions (4)
primefaces/primefaces
Dec 2019 - Feb 2020
Ultimate Component Suite for JavaServer Faces
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits in 2 months
Contributions summary:Sébastien contributed to the PrimeFaces component suite by implementing and refining the multiViewState feature, adding a component reset option and clarifying its behavior. They modified core PrimeFaces classes and interfaces to support this functionality, including changes to the `PrimeFaces`, `MultiViewStateAware`, and `DataTableRenderer` files. Furthermore, the user refactored the `FileUpload` component, improving its virus scanning interface and introducing validation.
javaserver-facesadobe-experience-managerjsfwebgljavascript
primefaces-extensions/primefaces-extensions
Jul 2016 - Mar 2018
PrimeFaces Extensions
Contributions:11 commits in 1 year 8 months
jsfjsf2primefaces-extensionsprimefacesextensions
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.