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Joan RodriguezJR

Joan Rodriguez

Lead Flutter Mobile & Web Developer

€480/day
Grenoble, FR
3-7 years
Flutter
Dart
Flutter Web
iOS
Android

Average response time: 1 hour

Freelancer profile translated to English.
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About Joan

Do you have a mobile or web application project? I'll transform it into a reliable product, quickly and without tripling your development costs.

Senior Flutter Developer and Grenoble INP-Phelma engineer, former startup co-founder, I design iOS, Android, and Web applications from a single codebase. Result: reduced timelines and maintenance costs, without compromising native performance.
My approach: a clean architecture from the start (Clean Architecture / BLoC), designed to last and scale — without technical debt. I further accelerate delivery through AI-assisted development (x3-4 velocity).

🚀 What I offer you
• Scalable Flutter iOS / Android / Web applications
• MVP delivered in a few weeks
• Solid and maintainable architecture (Clean Architecture, BLoC, Design System)
• Key integrations: payments (Stripe / Stripe Connect), authentication, notifications, analytics, NFC/QR
• CI/CD and automated deployment to stores

🛠 Types of projects
• End-to-end Flutter development (Web + Mobile)
• Taking over, refactoring, and stabilizing existing apps
• Technical consulting / Part-time CTO for startups
As a former entrepreneur, I understand your business and technical challenges: I don't just deliver code, I ensure the product achieves your goals.
📩 Let's talk about your project — quick response, free quote.

  • French

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Grenoble (up to 50km)

Experience

  • Sayla Concept
    Flutter Developer — Hotel SaaS Platform
    January 2026 - May 2026 (4 months)
    •Designed a room service application for a high-end hotel, based on a multi-establishment SaaS model.
    •🔑 Guest access via QR code / unique room code: menu viewing, ordering, and online payment.
    •💳 Stripe Connect integration with intermediary commission (multi-establishment SaaS model).
    •📊 Real-time back-office: order management, analytics (revenue, peak hours, top products), QR code generation per room.

    Stack: Flutter + Firebase (Auth, Firestore, Storage, Cloud Functions), Stripe, SaaS
    Deployment: Web, iOS, Android
    Flutter Firebase Stripe Connect SAAS Flutter Web
  • LEASECOM
    Lead Flutter Web & Mobile Developer
    March 2024 - March 2026 (2 years)
    Nantes, France
    •Designed and developed a Single Codebase architecture (Flutter) deployed on 3 platforms: Web, iOS, Android.
    •💎 Unique codebase: a universal application serving as both a Partner Extranet AND a Tenant Extranet — significantly reduced maintenance costs.
    •🔐 Single sign-on & dynamic UX (Role-Based Routing): the interface adapts according to the profile (Tenant / Partner).
    •⚙ Integration: synchronization with the Core Business via REST APIs, in collaboration with the API team for continuous Web & Mobile compatibility.

    Stack: Flutter, Flutter Web, REST API, GitLab Actions
  • e-Liberty Services
    Flutter Mobile Development Engineer
    June 2021 - March 2024 (2 years and 9 months)
    Le Bourget-du-Lac, France
    •Developed and maintained critical high-traffic applications for major ski resorts (Groupe Mont-Blanc, Decathlon), within an Agile squad of 5 people.
    •🛒 E-commerce: high-traffic mobile ticketing apps (pass purchase/reservation), analytics (Adjust, Batch), monitoring (Sentry).
    •🏗 Complete refactor of the Respirelax+ health app: architecture redesigned for maintainability.
    •🎨 Flutter Design System: complete UI library based on Figma mockups (atomic & composite components) — visual consistency and increased velocity.
    •🔐 IoT & access control: e-Liberty Check app (NFC + QR Code) for physical access control at resorts.
    •🚀 Industrialization: CI/CD pipelines with Codemagic (automated tests & deployments to stores).

    Stack: Flutter, Codemagic, Design System, NFC
Check out Joan's experience

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Education

  • Engineering Degree
    Grenoble INP
    2020
    Microélectronique & Télécommunications
  • University Diploma in Technology in Electrical and Industrial Computing Engineering
    University of Nice Sophia Antipolis (member
    2017

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