Freelancer profile translated to English.
Back to original languageAbout Joel
👨💻 Developer specialized in React and Next.js for over 6 years, I am passionate about creating high-performance websites and applications, with a strong aptitude for AI. My goal is to help entrepreneurs and businesses turn their ideas into reality.
🚀 Active in development since 2018, I have collaborated with numerous companies and startups to design custom solutions, websites, and applications tailored to their needs, while ensuring a fluid user experience and optimal quality at every stage of development.
📩 Have a project? Feel free to contact me to discuss how I can contribute to achieving your goals!
Feel free to visit my latest projects as well: iterucode.ai & itinego.com!
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 30km), Bussy-Saint-Georges (up to 50km)
Experience
- IteruCodeLead Full-Stack Developer & AI DeveloperSOFTWARE PUBLISHINGMay 2026 - Today (3 months)Paris, France
- AI platform for generating and deploying full-stack applications (frontend, backend, and database), inspired by v0, Bolt, and Replit
- Performance-oriented Next.js development: SSR, streaming, caching, incremental hydration, virtualization, diff processing in web workers, FR/EN internationalization, and Vitest + convex-test
- Real-time backend architecture with Convex, durable actions for long-running tasks, and end-to-end typed oRPC APIs
- Integration of multimodal AI models via Vercel AI Gateway: multi-provider routing, model capability detection, and code, image, and video generation
- Development of persistent, multi-step AI agents with Vercel AI SDK: context management, real-time streaming, and advanced tooling (files, terminal, stateful browser, diagnostics, auto-review, and deployment)
- Design of a resilient distributed architecture: leasing with heartbeats, deadlines, and cancellation, idempotence, state machines, reconciliation jobs, isolated Vercel Sandbox environments, and S3 snapshots
- Implementation of the "vibe-coding" workflow, multi-user collaboration with RBAC, automated Vercel deployments, and reliable Stripe billing: immutable ledger, credits, atomic debits, and real-time AI cost tracking
🔗 Website/Application available at iterucode.ai - Itinego / Road IcelandLead Full-Stack Developer & AI DeveloperTRAVEL AND TOURISMMay 2025 - February 2026 (9 months)Paris, France
- Travel application with a community of 65,000+ members, available on Web (itinego.com and roadiceland.com) and Mobile (iOS & Android)
- Full-stack development with Next.js (web) and React Native Expo (mobile) within a Turborepo monorepo architecture
- Supabase backend / PostgreSQL database and implementation of tRPC for end-to-end type-safe endpoints across all platforms
- Implementation of AI (generic and agentic chat interface), with context management/RAG and tooling via Vercel AI SDK and SSE reflection streaming
- Implementation of Stripe (web) and RevenueCat (mobile) payment systems
- Real-time propagation of feature flags via WebSocket
- Offline-first mobile architecture with automatic synchronization
🔗 Web application available at itinego.com & roadiceland.com - IteruFull Stack Developer (freelance)DIGITAL AND ITJanuary 2021 - Today (5 years and 7 months)Paris, FranceFull Stack Developer - self-employed, within a freelance agency/collective for web and mobile application development
- Generation of specifications based on client needs
- Development of websites and web/mobile applications
- Development of databases and REST APIs, tRPC, Websocket, and SSE
- E-commerce website development
- AI development and integration (agentic and generative)
- Blockchain/smart-contract management and integration (Web 3.0)
- Cloud and edge network deployment
🔗 Agency website available at iteru.agency
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Education
- Master of ScienceEPITECH - European Institute of Technology2022Master of Science : Architecture Logiciel spécialité IoT
- Expert in Information Technology Level 1Samsung Campus2019Expert en technologie de l'information niveau 1, formation de programmation informatique et gestion de projets