Freelancer profile translated to English.

Description

Fullstack development expert with a strong DevOps culture, I help companies build and scale their web and mobile applications.

Specializing in high-performance environments (Rust, ASP.NET Core) and fluid interfaces (React Native, React), I bring a global vision: from architecture design to automated deployment (Docker, CI/CD).

My approach: clean, typed, and maintainable code, designed for production from day one.

Preferred Stack:

• Mobile: React Native, Expo TypeScript.

• Backend: ASP.NET, C#, Rust, Node.js.

• Frontend: React, Next.js, Tailwind.

• Ops: Docker, CI/CD, Linux or Windows server management.

Available for technical reinforcement missions, MVP creation, or architecture audits.

Languages

French
Native or bilingual
English
Fluent
Spanish
Conversational

Workplace preferences

Can work on-site

Lyon (up to 50km)

Freelance
Shotai
SOCIAL NETWORKS
June 2024 - Today (2 years and 2 months)
Shotai is a web app for organizing events with friends in a simplified way. It provides an alternative to Facebook Events as fewer and fewer people use that platform. The interface is well-designed and offers a widget grid to customize the event page.

I can provide demos of the project as it is a personal project developed with a partner.

I developed the application from A to Z, also handling the DevOps part. The application relies on React Native for mobile and web versions, while the backend is designed in Rust using the Actix framework. The deployment system uses Github Actions for automation and Docker Swarm for orchestration. Finally, styles are managed with Tailwind and Nativewind.
Rust Actix React Native Expo Docker Swarm Docker MongoDB
Konecteam
Intranet Social Network
SOFTWARE PUBLISHING
November 2022 - Today (3 years and 9 months)
Lyon, France
A B2B project that offers companies an intranet to share social information. For example, writing and sharing articles, proposing carpooling, sharing files, internal messaging... For this project, I added a messaging system. Improved many aspects, performed maintenance, bug fixes... The project uses ASP.NET Core for the backend and React Native for the mobile and web parts.
ASP.NET MVC ASP.NET Core React Native
Hennebont Ping Center
Showcase and E-Shopping Site
SPORTS
May 2022 - June 2022 (1 month)
A showcase website for the Hennebont table tennis center with an e-shopping section for booking training camps. The mission was purely front-end using the Next.js framework. The showcase site was manageable via the Contentful content management tool. Interaction with a custom API for the e-shopping part.
Next.js React.js CSS3 HTML5 Contentful

Check out Léo's experience

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Professional degree in development
IUT Lyon 1
2017
L'objectif de cette licence est de former des professionnels spécialisés dans le développement d’applications distribuées JEE et .NET, pour des fonctions de développeur d’applications dans l'esprit du courant devops, développeur de solutions système réseau, programmeur industriel ou de maintenance. Plus globalement, nous apprenons aux étudiants à s’adapter rapidement à n’importe quel environnement de travail, en leur présentant les techniques professionnelles de développement (TDD, intégration continue, recette d'application), de BD (utilisation avancée et administration), avec des notions approfondies de gestion de projet (traditionnelle et agile), de système / réseau.

Léo Le Sommer

React, React Native, ASP.NET, Node.js Developer

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