Sébastien Billion
Liège, Liège, Belgium
Summary
🤩
Rockstar🎓
Top SchoolSébastien Billion is a senior software engineer based in Liège, Belgium with over a decade building web and mobile applications and integration platforms. At UKG he designed asynchronous REST APIs in Python using aiohttp, modernized a legacy Django e-signature subsystem with DocuSign and AdobeSign integrations, and drove a complex Elasticsearch migration from v1 to v8. He’s a pragmatic full‑stack engineer who has shipped Flask/AngularJS APIs, led monolith-to-backend/front-end migrations, and produced Kotlin services plus FastAPI proofs-of-concept while championing PEP8, tests, CI and multi-environment deployments. His experience spans mobile (iOS/Android), DevOps (AWS, nginx, ELK) and data sanitation, and he’s comfortable moving between product-facing features and performance work. An unusual detail: early in his career he worked on GCC inlining sequences at STMicroelectronics, demonstrating low-level performance curiosity that complements his higher-level system design. Passionate about Python — he jokingly says he “eats Python like a glouton” — he blends clean code discipline with pragmatic, scalable solutions.
11 years of coding experience
14 years of employment as a software developer
Master degree of science, Computer Science, Master degree of science, Computer Science at SUPINFO - The International Institute of Information Technology
French, English
Stackoverflow
552reputation
316kreached
24answers
1question
Github Skills (138)
uwsgi10
python10
googlemaps10
flask-restful10
flask-extensions10
extensible10
elevation10
flask10
web-api10
client-library10
bbcode10
wsgi10
pyramid10
webapp10
location-services10
Programming languages (3)
Github contributions (5)
peopledoc/django-adobesign
Oct 2020 - Feb 2022
AdobeSign backend for django-anysign
Contributions:10 reviews, 26 commits, 20 PRs in 1 year 3 months
pythondjangobackendpython3adobesign
SBillion/restaurant-api
Oct 2019 - Oct 2019
A simple API with DRF
Contributions:23 pushes, 4 branches, 2 tags in 5 days
apipythondrfsimple-api
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