Resume

Lily · Amiens, France

Built a plant care mobile app end to end, from the first idea to a product live on the App Store (rated 4.8). Sole developer and product owner, in charge of technical architecture, UI/UX design, development, marketing, SEO, acquisition and monetization. Over 3,500 plants added and 1,200 active users in 4 months of beta.

• •TypeScript monorepo of 9 packages (api, app, db, shared, web, admin, mcp, knowledge-db, plant-scanner) with Bun and Turborepo.
• •Backend API written 100% in Effect.js, with dependency injection through Layers, typed errors with Schema.TaggedError and 40+ services (auth, AI, push, gamification, social, weather, scheduling).
• •Streaming AI chat (Vercel AI SDK) with per-plant RAG context through pgvector (care history, health and environment of each plant). 73% engagement rate among active users.
• •Native plant scanner (custom Expo module) that identifies 15,000+ species and diagnoses diseases with AI vision.
• •Full gamification system with achievements, milestones and care streaks. Raised D7 retention by 40%.
• •Event-driven system (Redis pub/sub) for push notifications, care scheduling and daily tips, run by 6 dedicated schedulers.
• •Social features with public profiles, follows, rooms for each part of the home and care delegation between users.
• •Bilingual (en/fr) Next.js 16 marketing site with an SEO blog, JSON-LD, sitemap and i18n. 8,000 organic visits per month.
• •Admin dashboard (Vite + React 19) for moderation, analytics and gift code management.
• •MCP (Model Context Protocol) server for advanced AI interactions with the API through @effect/ai and @effect/rpc.
• •Full CI/CD pipeline with 5 GitHub Actions workflows (CI, iOS build, OTA update, manual build), automated tests and TestFlight builds in under 8 min.
• •Freemium model (€4.99/month or €29.99/year) with RevenueCat and a 7-day free trial. 6.2% free-to-paid conversion rate.

Miles Republic · Lille, France

Marketplace platform for running race organizers (trail, marathon, ultra). Rebuilt the e-commerce layer that serves 150,000+ registered runners and 800+ events a year. Worked in a team of 4 developers using Scrum.

• •Built custom MedusaJS modules that automate the whole payment cycle, covering Stripe charges, partial cancellations, automatic refunds and dispute handling. Cut support ticket volume by 60%.
• •Advanced Stripe integration with webhooks, payment intents, multi-currency support, conditional refunds and automated accounting reconciliation.
• •Optimized critical queries and added caching strategies, bringing average load time down from 3.2s to 1.1s.
• •Designed a read replication architecture (leader-based replication) that handles 15,000 requests/min at registration peaks.
• •Migrated the REST API step by step to optimized Prisma endpoints, cutting payload size by 45%.

Freelance · France

Freelance work focused on web3 and mobile apps. Worked with 12+ clients on projects ranging from MVPs to full rebuilds, for €180K in total revenue over the period.

• •Built 3 smart contracts running in production on Solana and Ethereum, handling €250K+ in transaction volume.
• •Created Smashpros (open source, 400+ active users), a performance tracking tool for local gaming communities.
• •Built Discord and Telegram bots for crypto trading, with 1,200+ active users across the servers they run on.
• •Shipped 8 mobile apps (React Native) and 4 web apps for clients in finance, gaming and real estate.
• •Designed distributed systems for high-load applications (10K+ concurrent users).

Ewill · Amiens, France

Web and mobile development agency in Amiens. Went from junior developer to technical lead on mobile projects in 2 years. Set up the company's mobile team, which brought in 35% of annual revenue from its second year.

• •Built 15+ mobile and web apps for clients such as the Chambre des Notaires de Paris, Decayeux and Enedis.
• •Set up the mobile development team (React Native), with 6 apps published on the stores and 50K+ total downloads.
• •Trained and mentored 8 interns and junior developers on React and React Native.
• •R&D on new kinds of projects, including a drone control app (Enedis partnership), connected IoT kiosks and 3D printer prototyping.
• •Owned the client relationship on 10+ concurrent projects, with a 95% satisfaction rate.