Freelancer profile translated to English.
Back to original languageAbout Léo
Freelance Backend & Fullstack Developer specializing in Java, Node.js, React, TypeScript, and Python.
I gained my experience through several professional and academic projects, notably at SAP Labs France, where I worked on high-traffic cloud applications.
💡 What I bring:
Robust and secure APIs (REST, GraphQL)
Scalable backend in Node.js, Java, Spring Boot
Modern frontend with React/TypeScript
CI/CD & automation (GitLab, Docker, Kubernetes)
🎯 My goal: deliver robust, performant, and maintainable applications, applying clean code and clear architecture.
Based in Caen, also available in Paris or remotely.
👉 Let's discuss your project if you are looking for a freelancer capable of quickly strengthening your teams.
French
Native or bilingual
English
Fluent
Can work on-site
Caen (up to 50km), Paris (up to 20km)
Experience
- SAP Labs FranceApprentice EngineerSOFTWARE PUBLISHINGAugust 2022 - August 2025 (3 years)Caen, FranceDuring my apprenticeship at SAP Labs, I worked on SAP Convergent Charging, an essential component of SAP's billing solutions for telecommunications.My role evolved from backend development to full stack, contributing to both enterprise-level APIs and modern front-end interfaces.Key Contributions:Backend (Java): Development and maintenance of robust components in a high-performance distributed system used by global telecom operators.Monitoring Tool (Kubernetes): Design and implementation of a custom monitoring tool for Convergent Charging, deployed on Kubernetes, to track service health and performance.Frontend (SAP CAP / CDS / Fiori Elements):Integration of SAP CAP (Cloud Application Programming Model) with CDS (Core Data Services) to expose business logic and data services.Development of interfaces based on Fiori Elements for internal tools, enabling the creation of dynamic, metadata-driven enterprise applications with minimal code.Participation in UX improvement and end-to-end integration with backend services.DevOps & Agile: Worked within agile teams, wrote comprehensive tests, performed code reviews, and contributed to CI/CD workflows.This experience allowed me to gain a solid understanding of the SAP cloud ecosystem, enterprise architecture, and full-stack development in real-world, large-scale environments.
- MadvisionStudent Management SystemEDUCATION AND E-LEARNINGMay 2025 - August 2025 (3 months)Fianarantsoa, MadagascarI designed and developed a complete student management system for a local training center, including both backend and frontend components:Backend: Created a RESTful API in Node.js (Bun) with Express to manage students, payments, modules, and invoices.Integrated JWT-based authentication with role management (admin, super-admin) and route security.Frontend: Developed a responsive interface in React, Refine.dev, TypeScript, and Tailwind CSS, with advanced features:Dynamic tables with filtering, sorting, column selection, modalsReal-time updates and local state synchronizationCSV import/export with intelligent merge/update logicImplemented a modular architecture and clean code best practices to ensure maintainability.This project demonstrates my ability to design and deliver complete business applications from scratch, using modern web technologies and paying close attention to user experience.
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Education
- ENSICAEN – Master’s degree in Computer Science (Engineering School)ENSICAEN - National Engineering School of Caen2025Spécialisation en génie logiciel, développement backend et DevOps. Apprentissage chez SAP Labs France, avec contribution à des projets de grande envergure en Java, CAP CDS et architectures cloud-native.
Certifications
- TOEIC 910ptsTOEIC Program2023