Freelancer profile translated to English.
Back to original languageAbout Léo
Looking for a React / NextJS Full-Stack developer?
You are in the right place.
I am a software engineer and founder with experience in building modern SaaS platforms, specializing in React and Firebase development.
I have developed solutions in various fields such as restaurant management (SaaS Slice), AI solutions for risk management (Operal), and educational platforms (SubLearn, AllEnglishTests).
I have also completed personal and freelance projects combining React, Node.js, Firebase, and AI integrations (Gemini, ElevenLabs).
I am able to:
- Design and develop modern, responsive, and accessible user interfaces with React, Tailwind CSS.
- Implement secure authentication systems and real-time storage with Firebase.
- Architect high-performance, scalable, and maintainable full-stack applications using Zustand, Context API, and React best practices.
- Integrate and manage third-party APIs (OpenAI, Gemini, Spotify, ElevenLabs) to enrich functionalities.
- Participate in writing technical specifications and designing efficient workflows.
- Set up development and deployment pipelines via Git, Netlify.
- Write clear documentation and maintain code quality through reviews and tests.
- Optimize performance and user experience through rigorous monitoring of bugs and feedback.
I also master: JavaScript, TypeScript, Node.js, Express.js, Python (data processing), MobX, Styled-Components, as well as Agile methodologies.
Transparency is important to me: I regularly communicate project progress to my clients to ensure clear and efficient follow-up.
Ready to discuss your project?
Contact me directly via the platform.
French
Native or bilingual
English
Conversational
Can work on-site
Paris (up to 50km)
Experience
- INFOTECHPLFull-Stack DeveloperJanuary 2024 - Today (2 years and 5 months)Paris, FranceDelivered tailored software solutions for various clients, focusing on high-quality, scalable applications.
- OperalReact DeveloperBANKING AND INSURANCEApril 2024 - January 2025 (9 months)Puteaux, FranceFront-End
- Developed modern, dynamic user interfaces using ReactJS, styled-components, and MobX for state management.
- Designed and built a reusable component library similar to Material-UI (MUI), improving development speed and consistency across projects.
- Leveraged ECharts to create interactive data visualizations, including table-based insights and results from various analyses.
Back-End- Implemented server-side logic using Python and Pandas, performing complex data manipulations and analyses.
- Provided APIs to deliver analytical results and manipulated data to the front-end, enabling real-time visualizations.
- Developed a custom Javascript library to convert Markdown content into HTML.
- Utilized WeasyPrint to generate high-quality PDF reports from HTML content, enabling automated documentation.
Recommendations
Be the first to recommend Léo
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Computer EngineeringEPITECH - European Institute of Technology2023Ingénierie informatique
Certifications
- React NativeCodeCademy2024