Cédric Krier
Founder at B2CK
Liège, Liège, Belgium
Summary
🤩
Rockstar🎓
Top SchoolCédric Krier is a founder and seasoned software engineer with 20 years of experience building and leading open-source and commercial projects from Liège, Belgium. He leads Tryton and combines deep Python backend expertise with practical security work—as seen in contributions to pyca/cryptography—and hands-on standards-aware data validation demonstrated in python-stdnum. His career spans product and engineering roles from enterprise ERP work to consultancy, and he also runs B2CK, blending technical leadership with business management. Notably, he has a strong background in code review and tooling improvements (contributions to Rietveld) and a formal engineering education from Université de Liège, reflecting an analytical approach to system design and validation.
19 years of coding experience
3 years of employment as a software developer
Master, Architecture Engineering, Master, Architecture Engineering at Université de Liège
English, French
Stackoverflow
229reputation
20kreached
21answers
0questions
Github Skills (19)
data-validation10
pytest10
back-end-development10
python10
testing10
google-app-engine10
cryptography10
oauth9
mercurial8
apidoc8
api8
wysiwyg6
docker6
reportlab6
rml6
Programming languages (16)
Github contributions (5)
rietveld-codereview/rietveld
Oct 2015 - Apr 2019
WARNING: THE RIETVELD SERVER MAY DISAPPEAR! See top of README.md. Code Review, hosted on Google App Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits, 10 PRs, 19 comments in 3 years 6 months
Contributions summary:Cédric primarily focused on improving the Rietveld code review server, focusing on backend functionality. They implemented features like trailing space visualization and OAuth token storage. Their contributions involved refactoring code, removing deprecated XMPP notification functionality, and enhancing the upload process. Additionally, they modified the Mercurial integration to generate diffs using the subrepos option.
google-appapp-enginehostedreviewgoogle-app-engine
arthurdejong/python-stdnum
Dec 2013 - Mar 2022
A Python library to provide functions to handle, parse and validate standard numbers.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 4 PRs, 4 comments in 8 years 3 months
Contributions summary:Cédric contributed to the `python-stdnum` library, focusing on enhancing its functionality for handling and validating standard numbers. Their work involved adding support for new VAT numbers for Great Britain, incorporating support for the Belgian National Number, and implementing specific validation rules for La Poste SIRET. They also added functionality to derive birthdates from Belgian national numbers, demonstrating a good understanding of data validation and number format standards. The commits primarily involved modifying Python code within the library.
python-librarycreditpythonphone-numbervalidation
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