Freelancer profile translated to English.
Back to original languageAbout Charles
Freelance Full Stack Developer, 8 years of experience, specializing in web and mobile — Angular, React, Node.js, and Flutter. I design and deliver complete products, from front-end to infrastructure: cross-platform apps, web platforms, REST/GraphQL APIs, real-time, payments, CI/CD, and deployment.
What sets me apart: I think product, not just code. I currently edit and monetize my own applications — Murmure, a 100% local AI dictation on macOS, and Dian Dian, a cross-platform tracker published on the stores. I therefore master the entire chain: scoping, design, front-end + back-end development, publication, monetization. You get an autonomous freelancer, capable of taking a project and leading it to deployment.
I also integrate AI concretely and reliably into products (cloud & local LLMs, RAG, agents), and I come from a demanding background in defense & aerospace software development (C++/Qt for CEA and Airbus Defence) — a rigor I bring to every web mission.
Stack: Angular · React · TypeScript · Node.js / Bun · Flutter · PostgreSQL · Docker · AWS / Cloudflare.
French
Native or bilingual
English
Fluent
Chinese
Basic
Remote only
Primarily works remotely
Experience
- OVERRIDEDEVApp Editor — Murmure & Dian DianSOFTWARE PUBLISHINGJanuary 2025 - Today (1 year and 7 months)Rennes, FranceDesign, development, publication, and monetization of my own applications, end-to-end.Murmure — Native macOS AI dictation, 100% local and offline: whisper.cpp STT + a local Qwen3 LLM (MLX) that cleans up transcription behind a guardrail diff (without ever altering meaning). ~99 languages, global shortcut, intelligent paste. Swift / SwiftUI.Dian Dian · 点点 — Cross-platform visual year tracker: Flutter (iOS / Android) + Express / TypeScript / Postgres backend, real-time WebSocket sync, JWT auth, RevenueCat in-app purchases, self-hosted (Docker, CI/CD). Published on the App Store.Full role: product, design, front-end + back-end dev, infrastructure, store publication, and acquisition.
- Agora Nova - Ministère du NumériqueFull Stack Mobile Developer (Flutter + REST API)SOCIAL NETWORKSNovember 2025 - Today (9 months)Paris, FranceFlutter mobile app + REST API (Bun) for a public debate platform.Verified multi-role accounts, posts, polls, hashtags, news feed, moderation tools, and role-based access. GDPR-compliant FR hosting, CI/CD.Full-stack role: Flutter app and REST API design + development.
- SNCFAngular Front-end Developer (DigiDoc+)TRANSPORTATIONJune 2023 - November 2024 (1 year and 5 months)Paris, FranceFront-end redesign of DigiDoc+, the SNCF internal platform that disseminates railway prescription texts (regulations, instructions, safety guidelines) to all train staff — successor to DigiDoc / Syspre.Angular / TypeScript / RxJS: faceted full-text search (Elasticsearch on the back-end), navigation by classification (themes, jobs, document types, regions), identification sheets, favorites, history, publication alerts. Agile collaboration with back-end and business teams (SARDO).
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Education
- Expert in Information TechnologyEpitech2017