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Hi, I'm Armand

Mobile-first product engineer specializing in React Native and native iOS/Android. I ship production apps from MVP to the App Store. I care deeply about app security, smooth UI/UX, and performance.
AP

About

I'm a mobile-first product engineer specializing in React Native and native iOS/Android development. Over the past 4 years I've shipped production apps end to end, from architecture and design systems to native modules, CI/CD, and App Store releases. I partner with companies like Crisp and Theodo and a range of startups: maintaining and modernizing a React Native SDK that bridges native Android and iOS, and building apps across fintech, healthtech, voice AI, and IoT. I also founded and built Osly Solutions, a SaaS and IoT platform for secure building access, where I own everything from the mobile and web apps to the backend, cloud, and firmware.

Work Experience

Skills

React Native
Expo
TypeScript
Swift
Kotlin
Native Modules
React
TanStack Start
Next.js
NestJS
Django
Python
Redis
Docker
PostgreSQL
AWS
C++
Hardware IoT (MQTT, NFC, BLE)
Supabase
RevenueCat
EAS
Jest
Vitest
Maestro
App Store
Play Store
My Projects

What I build on the side

Open source, personal products and writing, beyond my client work.

Crisp React Native SDK

The official open-source React Native SDK that embeds the Crisp chat widget in mobile apps, with over 20k weekly downloads on npm. I reworked it from the ground up, modernizing the native iOS and Android bindings and preparing it for React Native's New Architecture (TurboModules and Fabric).

React Native
TurboModules
Fabric
Kotlin
Swift

Track

A personal app to plan and organize nights out with friends. Currently in the works.

React Native
Expo

Blog

Where I share what I learn about React Native, mobile architecture, app performance and security. Coming soon.

Testimonials

What others say

A few words from the founders and teams I've worked with.

Armand reworked our React Native SDK from the ground. He talked with our customers and teams to nail the pain points, then shipped a brand new SDK fully compatible with the previous one.
BJ
Baptiste JaminCEO at Crisp
LinkedIn
Armand immediately took a product, feature and market stance rather than acting as a simple executor. He challenged us and steered our MVP toward the right target, building a real climate of trust from the first minutes.
JL
Jérémy LavantureuxCo-founder at BLYST
LinkedIn
I highly recommend Armand for the excellent work on my app. He showed real technical expertise and a strong ability to understand my vision precisely. He's involved, responsive and always solution-oriented.
PG
Philippe GuerreiroFounder & business consultant
LinkedIn
Contact

Get in Touch

Got a mobile project in mind? book a quick call and let's talk about it. You can also reach me on X.