Pierre-emmanuel Mercier
Architecte Cloud at Betclic Group
Biganos, Nouvelle-Aquitaine, France
Summary
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Top SchoolPierre-emmanuel Mercier is a cloud architect with 11 years of software and systems experience, currently designing secure, scalable landing zones on AWS and Azure while embedding FinOps and DevOps best practices at Betclic Group. He has led migrations from on-prem .NET/IIS stacks to cloud-native architectures (Fargate, Lambda, DynamoDB) and coached teams on Terraform/Terragrunt, containerization, and .NET Core modernization. His background spans event-driven systems with Kafka, messaging with RabbitMQ, and building SaaS platforms and mobile backends at Orange, demonstrating a strong full-stack architectural mindset. An active contributor to open-source projects, he has implemented backend tooling enhancements and front-end UI cards for Home Assistant, showing hands-on versatility across infrastructure and UX. Based in Biganos, he pairs pragmatic developer-centric guidance with governance-focused cloud design, often surfacing cost and security trade-offs early in projects.
11 years of coding experience
3 years of employment as a software developer
Bac +4 Informatique, Bac +4 Informatique at Campus de BissyBTS IRIS Développement / Administration réseau, BTS IRIS Développement / Administration réseau at LP2I
French, English
Stackoverflow
225reputation
29kreached
5answers
10questions
Github Skills (25)
task-management10
javascript10
back-end-development10
css10
dotnet-new10
dotnet10
card10
html10
home-assistant10
rust10
backend10
git9
ui-design9
typescript9
typescript-types9
Programming languages (20)
Github contributions (5)
piitaya/lovelace-mushroom
Apr 2022 - May 2022
Build a beautiful Home Assistant dashboard easily
Role in this project:
Front-end Developer
Front-end DeveloperContributions:6 reviews, 13 commits, 20 PRs in 1 month
Contributions summary:Pierre-emmanuel primarily contributed to the development of Lovelace UI cards for Home Assistant. Their work focused on implementing new card functionalities, such as the vacuum card, and adding support for media players, locks, and humidifiers. They also worked on improving existing cards, including the title card, by adding alignment support and HA card. The user's contributions included code for UI controls, incorporating user interface elements, and fixing visual bugs and implementing UI-related improvements.
lovelacemushroomhacshome-assistantdashboard
jdx/mise
Dec 2024 - Feb 2025
dev tools, env vars, task runner
Role in this project:Backend Developer
Backend DeveloperContributions:17 reviews, 14 PRs, 30 comments in 2 months
Contributions summary:Pierre-emmanuel primarily contributed to the backend functionality of the `mise` repository, focusing on integrating new tools and features. They added support for the Dotnet backend, including installation and remote version listing. The user also enhanced the system to allow prerelease versions for Dotnet tools and split the remote task functionality. Furthermore, they worked on adding HTTP and Git task file providers, improving the task management capabilities.
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