Sébastien Billion
Liège, Liège, Belgium
Summary
🤩
Rockstar🎓
Top SchoolSébastien Billion is a seasoned backend Python engineer with over a decade of experience designing and delivering secure, scalable APIs and migration projects from legacy systems to cloud platforms. He has led full-stack rewrites, data sanitation and complex migrations at Jaccede, built asynchronous Python services (aiohttp, FastAPI POC) and Elasticsearch upgrades at UKG, and driven moves from on‑premise to GCP while enforcing strong testing and CI practices. Comfortable across the stack, he pairs hands‑on backend work with DevOps skills (AWS, Linux, PostgreSQL, Redis, ELK) and has shipped mobile and web clients earlier in his career. He favors pragmatic, well-documented code (PEP8, OpenAPI, pytest) and has experience integrating third‑party e‑signature providers and internal Kotlin services into large HR platforms. Based in Liège, Belgium, he describes himself as someone who “eats Python like a glouton,” reflecting a long-standing enthusiasm for the language beyond just production delivery. Colleagues rely on him for modernization efforts that combine data cleanup, performance tuning and secure, testable API design.
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 (119)
uwsgi10
python10
flask-restful10
flask-extensions10
extensible10
elevation10
flask10
client-library10
bbcode10
wsgi10
pyramid10
webapp10
location-services10
api-framework10
google-maps-api10
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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