Senior Full-Stack Engineer for EnergyTech Platform

CGS; Paris; Hybride; EUR 85 000 - 120 000; Plein temps

Avantages offerts par ce poste

Health insurance

Daily meal vouchers

Commuting support

Modern Paris offices

Résumé du poste

CGS in Paris seeks a Senior Full-Stack Developer to join a small team of engineers. You will work across backend, data processing and frontend, building a data-intensive, API-driven platform using .NET 9, Python, React and Next.js.

You’ll design scalable architectures, optimise APIs and contribute to CI/CD in a hands-on, collaborative environment. The role offers a hybrid model with modern Paris offices and a competitive package.

Qualifications

• 5+ years of full-stack development experience across frontend and backend.
• Strong proficiency with C#/.NET and Python (FastAPI a plus).
• Experience designing APIs and working with data-intensive apps.

Responsabilités

• Design and develop backend services using C#, ASP.NET Core and EF Core.
• Build Python-based APIs and data pipelines with FastAPI and Pandas.
• Develop frontend interfaces with React, Next.js and TypeScript.
• Design scalable architectures and optimise API performance.
• Work with PostgreSQL and data-heavy applications.
• Contribute to CI/CD and Docker-based development.

Connaissances

C# / .NET

Python

React

TypeScript

APIs design

Outils

Docker

OpenTelemetry

Grafana

PostgreSQL

Description du poste

CGS in Paris seeks a Senior Full-Stack Developer to join a small team of engineers. You will work across backend, data processing and frontend, building a data-intensive, API-driven platform using .NET 9, Python, React and Next.js.

You’ll design scalable architectures, optimise APIs and contribute to CI/CD in a hands-on, collaborative environment. The role offers a hybrid model with modern Paris offices and a competitive package.