FULLSTACK ENGINEER — MOBILE & AI
Armand Charbonnier
Mobile apps & AI agents, crafted with care.
Freelance fullstack engineer — 14 years in, 40+ clients accompanied. I turn ideas into mobile apps users love, and I support you in setting up automated workflows that raise your efficiency and free your teams to focus on what matters.
14LEVEL
40+CLIENTS
3LANGUAGES
7COMPANIES
PROFILE
Based in Lyon, working remotely worldwide. React Native expert at SprintMob — mobile app development done right. Previously embedded at Finary and teams across France and New Zealand.
- Master's in Software Engineering — Université de Rouen (2014)
- DUT Computer Science — Le Havre (2010)
ACHIEVEMENTS
- 40+ client apps shipped
- Finary — fintech quest cleared
- International quest — New Zealand
- Bilingual: FR · EN
ATTRIBUTES
Skill mastery, earned over 14 years in the field.
MOBILE
main class
React Native96
Expo & EAS92
Store delivery90
AI & AUTOMATION
specialization
AI agents88
LLM integration86
n8n90
FRONTEND
React95
Next.js88
TypeScript90
BACKEND
Node · NestJS90
Firebase88
PostgreSQL86
SPOKEN
FrenchNATIVE
EnglishBILINGUAL
JapaneseJLPT N5
SpanishBASIC
QUEST LOG
14 years of engagements — from first lines of VBA to AI agents.
MAIN QUEST
IN PROGRESS
Fullstack Developer — Freelance
2018 —
LYON · REMOTE WORLDWIDE
React & React Native, Node.js / NestJS, Firebase, PostgreSQL — long-term engagements in France and abroad. 40+ apps shipped.
REACT NATIVE
NESTJS
NEXT.JS
FIREBASE
POSTGRESQL
OBJECTIVES
SprintMob
Freelance collective
ACTIVE
Sep 2023 —
LYON, FRANCE
Web and mobile app development for a varied client roster — React Native builds from first wireframe to store release.
REACT NATIVE
WEB
Finary
Fintech
CLEARED
Jul 2022 – Jul 2023
LYON · FINARY.COM
Shipped key features of the Finary mobile app, embedded with the team behind France’s fast-growing wealth-management platform.
REACT NATIVE
REACT
Mahuki — Te Papa Innovation Hub
Lead developer
CLEARED
Oct – Dec 2018
WELLINGTON, NEW ZEALAND
Responsive event-management web app in React for ShowMode Ltd, built at the national museum’s innovation hub.
REACT
LEAD
BEFORE FREELANCE
Prologue — eight years in enterprise engineering.
Attineos
STUDY & DEVELOPMENT ENGINEER
Lead developer and .NET C# technical interviewer. Analysis, design and development of C# MVC web apps for the MATMUT group, plus internal training and talks on Domain-Driven Design and Clean Architecture.
C# MVC
.NET
DDD
LEAD
FTEL
STUDY & DEVELOPMENT ENGINEER
Web apps in C# and PHP — .NET MVC, Entity, Zend, SQL Server (PL/SQL), IIS. Project planning, documentation and cross-platform mobile with Xamarin.
C#
PHP
XAMARIN
SQL SERVER
Dresser-Rand
DEVELOPER — THE ORIGIN
Requirements analysis, specifications and database modelling. A multi-user management tool in VBA, with demos and staff training.
VBA
SQL
PROJECTS
Completed quests — a selection.
FEATURED QUEST
Finary
Wealth management, done beautifully.
A year inside one of France's hottest fintechs, shipping investor-facing features across the React web app and the React Native mobile app.
REACT NATIVE
REACT
FINTECH
finary.com →
SIDE QUEST IN PROGRESS
Unreal Engine 5.8
Learning Unreal Engine 5.8 and building an independent game.
UNREAL ENGINE 5.8
GAME DEV
ONGOING · SPRINTMOB
40+ client apps
Mobile apps for startups and scale-ups — idea to App Store & Play Store, done right.
REACT NATIVE · 2018 —
SPECIALIZATION
AI agent setups
Agentic workflows and automation pipelines that remove the boring 80% — LLM integrations wired into real business tools.
AI · AUTOMATION
CLIENT QUEST · FINTECH
Klemo
AI-powered wealth advisor by Garance group: conversational onboarding, free financial check-up and personalized investment recommendations, on mobile.
MOBILE · AI · FINTECH
klemo.com →
CLIENT QUEST · RETAIL
Printemps Listes
Wedding & gift-list platform for the iconic Parisian department store — catalogue browsing, list management and gifting flows on a React storefront.
REACT · E-COMMERCE
listes.printemps.com →
SIDE QUEST · SOCIAL
Shush
Mobile social network for photographers and artists, built around digital detox — React Native.
REACT NATIVE · 2026
shush-app.com →
SIDE QUEST · SOLO BUILD
SnippetShots
Code-to-image API: one POST request returns a polished PNG of a code snippet — 20 themes, deterministic caching, no headless browser to babysit.
API · SAAS
snippetshots.saru-lab.com →
SIDE QUEST · NZ
EventBestie
Responsive event-management web app for venues — led the build at Te Papa's Mahuki innovation hub for ShowMode Ltd.
REACT · 2018
SERVICES
Freelance engagements — three ways to party up.
Mobile App Development
React Native from idea to store. Design-minded, performance-obsessed — apps your users will love.
MVP SPRINTAPP RESCUETEAM BOOST
AI Agents & Automation
Agentic setups that actually ship: LLM integrations, internal copilots, workflow automation.
AGENTSLLMWORKFLOWS
Fullstack Web
Next.js front to NestJS back — one engineer, the whole stack, no hand-offs.
NEXT.JSNESTJSFIREBASE
