Freelancer profile translated to English.
Back to original languageAbout Claude
Software engineer since 2006 (almost 20 years of experience), specializing in native iOS and Android mobile development.
My areas of expertise:
- Integrating AI into applications (Claude / OpenAI API, RAG, agents, structured outputs)
- In-app purchases and subscriptions (StoreKit, Play Billing, server-side receipt validation)
- Sensor management and real-time data (accelerometer, BLE, signal processing)
- Back-end API design (Node.js).
For 5 years, I led the SDK team at Bryj (Paris): specification, design, and maintenance of native Android and iOS libraries, continuous integration, and code reviews using Agile methodology.
My career began at Thales in 2006, where I worked on real-time video processing (codecs, players).
In parallel, I created and developed PerfExpert, an application that transforms a smartphone into an automotive performance measurement bench, used by tens of thousands of motorists and professional tuners worldwide (iOS + Android + AWS back-end). I manage a complete product in production, from sensor to payment: this has forged a strong demand for robust, secure, and maintainable code.
I integrate AI into my workflow (Claude Code, spec-first methodology), allowing me to deliver quickly and cleanly, and to rapidly absorb new technical contexts.
Accustomed to collaborative work (Git, TDD), I naturally collaborate with developers, engineers, and designers. I prefer short, well-defined missions where I can quickly provide specialized expertise.
English
Fluent
French
Native or bilingual
Can work on-site
Paris (up to 10km), Versailles (up to 10km), Élancourt (up to 10km)
Experience
- BryjLead SDK DeveloperSOFTWARE PUBLISHINGFebruary 2019 - February 2024 (5 years)Paris, FranceLed the Grow SDK team: specification, design, implementation, testing, and maintenance of native Android (Kotlin) and iOS (Swift) libraries integrated by client applications.Managed development, continuous integration, and code reviews using Agile methodology, with a strong focus on the quality, stability, and backward compatibility of delivered SDKs.
- PerfExpertFounder and DeveloperSOFTWARE PUBLISHINGJuly 2011 - Today (15 years)Paris, FrancePerfExpert transforms a smartphone into a real on-board dynamometer: measuring power, torque, and acceleration times, with realistic reports within 2% of professional bench results. The app works in standalone mode using the smartphone's inertial sensors (accelerometer, gyroscope), or with external devices connected via Bluetooth / Wi-Fi (high-precision GPS like RaceBox).I design and develop the entire product myself, from A to Z:
- Native iOS (Swift/Objective-C) and Android (Kotlin/Java) applications
- Node.js / Parse Server back-end hosted on AWS
- Real-time signal processing (filtering, sensor fusion) to transform raw data into reliable power curves
- Bluetooth Low Energy communication with external measurement devices
- Complete in-app purchase and subscription system (StoreKit, Play Billing) with server-side receipt validation
Beyond coding, I manage the product holistically: design, marketing, monetization, infrastructure, maintenance, and user support.PerfExpert is used by tens of thousands of motorists and professional tuners worldwide. I regularly collaborate with developers, engineers (mechanical, signal processing), and designers.Available on:- **Android**: *
- **iOS**: *
- ExpaySoftware EngineerBANKING AND INSURANCEDecember 2011 - December 2012 (1 year and 1 month)Fort-de-France, MartiniqueAs a Java backend engineer, I was responsible for:
- Maintenance of the Wexpay back-office
- Development of new features on the JEE server
- Mass data integration using Talend Open Studio tools
- System performance optimization and bug fixing
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Education
- Expert in Software Development Project Management (Engineering Degree)ETGL2006
- Computer Science Bachelor's DegreeUniversity of Versailles Saint-Quentin-en-Yvelines (UVSQ)2004