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Ferdinand HarmelFH

Ferdinand Harmel

Flutter Developer | Flutterflow Supabase GCP

€600/day
2 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ferdinand

For mobile apps that truly work

Flutter developer for 7 years, I've learned that a successful app isn't just good code. It's above all about making the right decisions at the right time.

What I bring you beyond development

  • Informed choices about your features: You have 20 ideas? We'll identify together the 3 that will really make a difference based on your budget, user impact, and technical complexity.
  • A constructive critical eye: I don't say "yes" to everything. If a feature risks complicating your app without adding value, we'll discuss it frankly.
  • Realistic planning: Honest deadlines, anticipation of challenges, total transparency on progress.
  • UX validation: Are your mockups beautiful on Figma? Perfect. But does it work on mobile? I'll review everything with you.

Why this approach changes everything

I've seen too many projects fail because the developer executed without asking the right questions. I challenge you so that your app truly serves your business.

Technical side
Flutter, Supabase/Firebase/API, scalable architecture (GCP), store publishing, CI/CD.

How we work

Briefing & contracting → Prioritization & validation → Development with regular check-ins (I integrate into your organization) → Regular deliveries

For an app that meets your real needs, delivered on time (yes, it's possible), with a clear roadmap!
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

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

Experience

  • Braze srl
    Malt logoOn Malt
    Flutter Developer
    August 2025 - September 2025
    Support on the authentication flow of a Flutterflow application
    Securing the project's Firestore database
  • Co'lec
    CTO
    ENVIRONMENTAL
    January 2024 - January 2025 (1 year)
    Paris, France
    Design and creation of the mobile application
    - Authentication
    - Development of donation pathways for a device
    - Catalog & consumption of gift vouchers
    - Integration of AI algorithms in the app
    - Implementation of a role and privilege management policy in the application
    - Automatic store deployment
    Flutter Flutter Web Supabase Google cloud App Store
  • Sorare
    Senior Flutter Engineer
    VIDEO GAMES AND ANIMATION
    August 2023 - July 2024 (10 months)
    Paris, France
    Redesign of their Android application on Flutter.
    Creation of the application with notifications, web portal integration (webviews for certain screens), performance optimization, third-party authentication integration, deployment on stores
    Flutter Dart GraphQL Android Play Store

Reviews

5.0

Out of 2 ratings

B

Bechir

Bonne collaboration - Magic Môme

Reviewed on 12/31/2025

I asked Ferdinand to develop a POC for a media player with a certain level of complexity, and he rose to the challenge. Smooth communication. Overall satisfied.
JulienJ

Julien

Braze srl

Reviewed on 9/2/2025

Hyper reactive. Very quick understanding of the project and the problems encountered. Listens and is pragmatic. I would hire again without hesitation.

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Education

  • Engineer
    IMT Atlantique
    2018
    Ingénieur généraliste

Certifications

  • Google Professional Cloud Architect
    Google cloud
    2021
    Google cloud

Skill set

Categories