Freelancer profile translated to English.
Back to original languageAbout Alexandre
Senior fullstack developer (TypeScript, Next.js, React, React Native, Node.js), I help product teams deliver faster by structuring the use of AI around their web & mobile projects.
Rather than using AI as a gimmick, I design detailed plans and tailored AI "skills" / agents for your context: fine task breakdown, constraints, validations, so that the implementation is largely done by AI, while maintaining strong human control over architecture, quality, and security.
I use Claude and Cursor daily to accelerate delivery, automate tests, documentation, and refactorings, and make your codebases easier to evolve.
With 8 years of experience and a regular lead role, my goal is to build systems where developers focus on important decisions, while AI handles the rest.
English
Fluent
French
Native or bilingual
Can work on-site
Plaisir (up to 50km), Paris (up to 50km)
Experience
- Sanofi AcceleratorSoftware EngineerPHARMACEUTICALS INDUSTRYJanuary 2025 - Today (1 year and 5 months)Paris, France
- Designed and implemented AI‑powered skills and workflows (Claude, Cursor) to help design and partially implement data‑driven epics and pull‑request reviews, cutting routine implementation time by ~20–30%
- Design, develop and maintain business‑critical web applications for data analysis and visualization (React, TypeScript).
- Build robust and scalable frontend architectures with advanced patterns (custom hooks, state management, clear separation of concerns).
- Optimize frontend performance and UX while handling large and complex data sets.
- Collaborate closely with backend, data and product teams to deliver solutions aligned with business needs.
- Contribute to technical decision‑making and define frontend best practices and standards.
- Ensure code quality through code reviews, refactoring and technical debt reduction.
- Work in compliance with enterprise‑level security, quality and regulatory constraints.
- Mentor junior and mid‑level developers within the frontend team.
- VigiProduitCreator & maintainerHEALTH AND WELLNESSNovember 2025 - Today (7 months)Paris, FranceCreation of VigiProduit, a Yuka-like mobile app for official product recalls (barcode scan, alerts, notifications), with over 10,000 users.End-to-end design and development (React Native), integration of official product recall data, publication and monitoring on the stores.
- RooleTech LeadPRESS AND MEDIAOctober 2023 - August 2024 (11 months)Boulogne-Billancourt, FranceSuccessfully maintained the production environments of two main websites: and media.roole.fr, ensuring stability and performance.Ensured smooth iteration cycles with the delivery of new features to production every two weeks.Provided operational leadership for a senior developer and a junior developer (intern), focusing on best practices, skill development, and code reviews.Key Achievements:
- Migrated the codebase from a monorepo to a multirepo architecture to support a microservices structure.
- Replaced EditorJS with CKEditor to better meet business requirements.
- Enhanced the UI Kit to be reusable across multiple projects.
- Improved and optimized the CI/CD pipeline for faster and more reliable deployments.
- Increased website performance and SEO ranking.
- Integrated TypeScript into the back-end, enhancing code quality and scalability.
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Education
- Master in Computer EngineeringItescia2016Cursus en Alternance pendant 3 ans. Option Game development
- BTS in Information Technology Services for OrganizationsLycée Jules Ferry2013Option SLAM (Solutions Logicielles et Applications Métier)