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Théo AugustTA

Théo August

Flutter Mobile Developer 📱💙 - IOS & Android

€500/day
9 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Théo

👋 Hi, I'm Théo

đź’» +6 years of coding, from startups to massive apps, specializing in Flutter and PHP/Symfony. I've worked on projects likeBoursoBank (8M+ users)while supporting small teams where every decision counts. My goal: to transform an idea into a solid, scalable product ready for users.

🇫🇷 My background is varied: after working in IT consulting,I founded my own startupwith a consumer mobile app, a 2-year adventure that allowed me to understand the startup ecosystem and adapt to all types of contexts.

⚡ My superpower: my **dual Mobile / Backend expertise**. With **Flutter**, I create high-performance iOS/Android apps. With **PHP/Symfony**, I develop robust, scalable, and maintainable APIs. Back-office, Firebase/Supabase, Docker, Codemagic… everything is designed to make your product stand the test of time.

🤖 My little extra: AI. I use it to speed up development, automate repetitive tasks, and generate optimized solutions. Result: **I deliver faster, with fewer errors**, and I can offer advanced features without sacrificing quality.

🌎 I lived in Montreal, shared my Flutter knowledge at **conferences with GDG Montreal**, and I adapt to all types of environments: agile startups or demanding large companies.

đź’ˇ What I can offer you:

• Transform your idea into ahigh-performance and scalableFlutter iOS/Android app
• Develop and maintain reliable and scalable Symfony APIs
• Integrate pixel-perfect designs and optimized UX
• Automate, secure, and optimize your processes using AI
• Provide a strategic perspective on product architecture and growth

âś… Tech stack & tools: Flutter/Dart, PHP/Symfony, Firebase & Supabase, Docker, Codemagic, REST/GraphQL, React/Next.js, SQL/NoSQL

If your project deserves to be **robust, fast, and well-thought-out**, let's talk 🙂
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Entre Potes
    Flutter Mobile Developer
    January 2026 - May 2026 (4 months)
    Complete refactoring in Flutter of the "Entre Potes" application, a social network with over 100,000 users, to improve experience, stability, and performance. Project taken from scratch, from A to Z, with the implementation of a new technical architecture and optimized communication with the back-end.

    Tasks and achievements:

    - Total refactoring of the mobile application in Flutter (UI, UX, navigation, business logic)
    - Implementation of a robust architecture (Clean Architecture + Riverpod)
    - Connection to GraphQL and REST APIs
    - Performance optimization (scrolling, rendering, loading times)
    - Redesign of the registration workflow, event creation, posting, messaging...
    - Integration of advanced social features (feed, interactions, notifications...)
    - Setup of a CI/CD pipeline via CodeMagic
    - Management of deployment and internal distribution (Android/iOS)
    Flutter GraphQL Dart API
  • BoursoBank (ex Boursorama)
    Flutter Mobile Developer
    BANKING AND INSURANCE
    March 2025 - January 2026 (10 months)
    Boulogne-Billancourt, France
    Freelance developer for BoursoBank, a subsidiary of Société Générale, on the mobile application used by over 7 million clients, as well as on their Symfony back-end API.

    Tasks and achievements:

    - Development of new interfaces in Flutter, respecting BoursoBank's design guidelines
    - Maintenance and evolution of the Symfony back-end API
    - Secure connection to internal APIs and management of sensitive data flows
    - Optimization of mobile application performance (loading times, animations, UX)
    - Implementation of reusable and adaptive UI components
    - Integration of unit and widget tests to secure deployments
    - Close collaboration with product, design, and back-end teams
  • Golden Cup
    Flutter Developer
    SPORTS
    June 2024 - June 2025 (1 year)
    Montpellier, France
    Freelance developer in a sports tech startup aiming to enhance fan experience in stadiums and bars.

    Tasks and achievements:

    - Development of the application in Flutter
    - Development of a React-based database administration platform
    - Development of a Symfony-based platform for clients
    - Integration of APIs for real-time data
    - Setup of Firebase (Cloud Firestore, Cloud Functions, Cloud Messaging, Cloud Storage)
    - Setup of the application architecture (BLoC pattern)
    - Management of application versions with Git on GitHub
    - Management of various administration consoles (Android and iOS)

Reviews

5.0

Out of 6 ratings

L

Léo

Golden Cup

Reviewed on 8/1/2024

Thank you for this quality work, I recommend.
L

Léo

Golden Cup

Reviewed on 8/1/2024

Top, once again, thank you Théo.

Recommendations

Thomas SebbaneTS
LG
Alexis PalmierAP
+2
Thomas Sebbane and 4 other people have recommended Théo

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Education

  • Professional Degree APIDAE, Web Development
    IUT de Montpellier-Sète
    2020
    Licence professionnelle APIDAE, Développement web
  • BTS, Computer Science for Organizations / Programming, Developer
    Lycée Jean Mermoz Montpellier
    2019
    BTS, Sciences informatiques aux organisations / Programmation, Développeur

Skill set

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