15 years building production software.

The online TV apps of three major European broadcasters: M6 in France, RTL in Germany and Videoland in the Netherlands. Films, series, sport and catch-up shows, on phone, tablet or straight on the TV.

Diagnosed and fixed visual, functional and blocking issues in the RTL Deutschland onboarding on a white-label multi-module architecture; analytics fixes and Nielsen audience measurement. Media3/ExoPlayer player, Google Cast SDK and MediaSession on Android TV and Fire TV. AdsLoader, pre-roll / mid-roll / post-roll, VAST/VMAP, CACHEBUSTING / TIMESTAMP tracking macros. Migrated the Widevine DRM licence endpoint; extensible MacroReplacer (Strategy pattern).

The new Auchan Côte d’Ivoire website, and the tool its teams use to update it themselves: news, catalogues, promotions, stores, job offers, applications. A freelance assignment I handled end to end, from design to development, from July to September 2026, with the final version delivered on 1 October 2026. The launch is gradual: each section opens as soon as the teams have filled it in. I used AI to move faster without cutting corners on quality.

Ruby on Rails 8, PostgreSQL 16, Hotwire (Turbo, Stimulus), Tailwind CSS, Action Text / Active Storage, Solid Queue / Cache / Cable. Back office with roles, editorial workflow and media library. Feature flags for a gradual rollout of sections. Docker deployment on Coolify, Plausible analytics. Development assisted by Claude Code.

An Android demo app to encrypt and decrypt messages, in the defence sector. Designed with the team’s cryptographer and delivered in about a month, phone set-up included.

C/C++ cryptographic component integrated through Android NDK / JNI, Attribute-Based Encryption, MVI architecture with Jetpack Compose and Flow, phone provisioning over USB.

The tool that schedules Free technicians’ visits to customers. I took over the project as lead to keep it on track, then added an automatic text message telling customers they are on their way, easing the load on support, and AI checks of the technicians’ photos so they meet the French telecom regulator’s (ARCEP) rules.

SMS notification, AI photo checks (ARCEP compliance), merge request reviews, production releases.

Discovery’s online TV app: documentaries, reality TV and live sport. During matches, it lets viewers follow the action in real time.

Video player overlay and interactive timeline synchronised with the live stream; “Report a Problem” feature. MVI architecture built on Kotlin Flow to control the player’s complex states. Unit test coverage above 80% on every pull request (JUnit, MockK, Turbine).

An app connecting tenants and landlords: report a repair with photos and videos, and chat instantly.

Dynamic forms with attachments, CometChat real-time chat, ExoPlayer, offline-first MVVM.

The UK app to find gigs, club nights and festivals nearby, and buy tickets in seconds.

UI/UX redesign with Kotlin, MVVM and Jetpack Navigation. Sign-up with magic links and deep links. Stripe and Braintree payment integration, conversion funnel optimisation.

A medical equipment inventory app for hospital staff: scan it and it’s recorded.

Barcode and badge scanning (ZXing), room number OCR (Google Vision), ERP integration.

The app used by sales agents who sell and install solar kits in Africa, built to work even without an internet connection. In Kigali (Rwanda), following them in the field, I saw them refreshing the screen over and over to check their commission. I flagged it to the team, then made the commission show as soon as the app opens and update on its own.

Offline-first with Room, automatic background sync, Java → Kotlin and MVC → MVP / Clean Architecture migration, RxKotlin, Dagger 2.

In London, in Google’s gTech team (via Harvey Nash), my job was to check that paying with an Android phone really worked. With a bag of 200 phones, I tested at the tills of Google’s partners (H&M, Burger King, McDonald’s, petrol stations), at Cubic, the company that supplies the London Underground (TfL) gates, and in shops in Warsaw and Poznań, Poland. Every issue was logged, analysed and sorted for Google’s teams. I also built an app so the team could borrow and return those phones by scanning a QR code.

Field testing of the Android Pay API (NFC) on about 200 devices; bug report collection and analysis, tracked in Google Sheets. Internal Android phone-lending app: QR code scanning, Google Sign-In, data stored through the Google Sheets API. Contract via Harvey Nash.

After several years of Java / JEE, I moved to Android: a music player app for Squirrel.fr that crossfades from one track to the next, and Android development courses at Cegos and for Société Générale.

Android music player: Java, ExoPlayer (crossfade), GreenDao. Android training material and delivery.

Internal software for EDF (energy), MAIF (insurance) and the French public payments agency (ASP): building, maintaining, and moving very large volumes of data.

Capgemini: Java / JEE application maintenance for ASP. CGI (ex-Logica): PL/SQL scripts on 40 million rows for EDF’s consumption forecasting, test automation (HP QuickTest Professional). Sopra Steria: MAIF websites. Spring, Hibernate, Struts, Oracle.

The online grocery and shopping site of E.Leclerc, one of France’s largest retailers. I built pages for it, from what customers see to what runs behind the scenes.

HTML / CSS front-end pages, Java Spring Boot back end, unit tests. Contract via Sopra Steria.