About Jean-Charles
The right product is one the team can maintain without you.
- requirements gathering,
- Figma prototyping,
- frontend architecture, React / TypeScript execution,
- and lightweight backend when the project requires it (API, NestJS, auth, third-party integrations).
- B2B / SaaS products, dashboards, internal tools, or complex business interfaces;
- contexts where deciding what to build is as important as how to build it;
- refactoring or stabilizing difficult-to-maintain existing code.
French
Native or bilingual
English
Fluent
Spanish
Conversational
Experience
- ScalewayFrontend Developer | UI/UX SupportTECHAugust 2025 - Today (10 months)Paris, FranceCloud Provider | Data Center | Feature-based architecture
- Summary
Technicalownerof an internal tool aimed at centralizing, within a single interface (“single source of truth”), several critical hardware team resources: component catalog management, assembly manual creation, commercial offer management, and physical asset tracking.Intervention with a **product-oriented approach**: gathering and clarifying needs from user teams, **prototyping features and full implementation**.- Contributions
📌 Ownership of the development of a unified interface including:hardware catalogassembly manualscommercial offers🧭 Gathering and clarifying needs from hardware teams (direct discussions, use case formalization, understanding existing workflows).🎯 Structuring a feature-oriented architecture to isolate different business domains while maintaining overall product consistency.🎨 Lightweight prototyping of features (Figma) to validate functional paths and hypotheses before implementation.🔍 Auditing existing codebase and refactoring critical parts to reduce complexity and improve maintainability.♻️ Factoring out components and implementing common patterns to accelerate the development of new features.✅ Writing unit and integration tests (Vitest, RTL, MSW).📝 Implementing best practices and active participation in code reviews.- Main Stack
React, React Router v7 (Data Mode), Material UI, Vite, Vitest, RTL, MSW, React Hook Form, Zod, TanStack Query, TypeScript, Feature-based architecture, Figma. - StockossFullstack Developer React.js / Next.js / React Native / Nest.jsLOGISTICS AND SUPPLY CHAINDecember 2023 - February 2025 (1 year and 2 months)Paris, FranceLogistics SaaS | Web & Mobile | API | Growth AutomationSummary:Participation in the development of the Stockoss SaaS platform's web and mobile solutions, in an agile context.Contributions:📌 Development of features on the SOO Client web platform (Next.js / React.js).⚙️ Participation in the development of several APIs with NestJS in collaboration with the backend team.📱 Participation in the development of the WMS V1 and WMS V2 mobile apps (React Native).✅ Contribution to the implementation of automated tests (Jest, React Testing Library).🚀 Development of a scraping tool with Puppeteer for growth hacking needs.📝 Participation in code reviews, delivery of maintainable and tested code.Main Stack: TypeScript, Next.js, React.js, React Native, NestJS, RTL, Jest, Puppeteer, AWS, Docker.
- Direction Generale de l'Aviation CivileJavascript and Golang Developer | React.js | Node.jsAVIATION AND AEROSPACEDecember 2022 - December 2023 (1 year)Toulouse, FranceR&D Context | Air Traffic Management Web ToolsSummary:Work on DGAC R&D projects related to air traffic management.Contributions:🚀 e-FTM: design, architecture, and from-scratch development of the POC for the air traffic controller workload management tool.⚙️ Participation in frontend and UX optimization efforts.🛠️ IODA-WEB and SINAPS: evolutionary and corrective maintenance of existing applications.Main Stack: React.js, WebComponents, TypeScript, Golang, Redux Toolkit, Material UI
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Certifications
- Develop a decentralized application with blockchain technologiesAlyra2025