You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Julien MartresJM

Julien Martres

Expert Flutter & Mobile | Application Architect

€700/day
2 projects
Clermont-Ferrand, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Julien

Expert mobile developer with 12+ years of experience. I create your PROFITABLE iOS and Android applications with Flutter, from the first line of code to store publication.

Specialties:
- Flutter cross-platform & native iOS
- Monetization (RevenueCat, subscriptions, in-app purchases)
- NestJS/Supabase Backend
- Integrations (OneSignal, various APIs)

I don't just code: I integrate revenue strategies that work (freemium, subscriptions, paywalls). You save time and avoid the pitfalls of Apple/Google payment APIs.

Autonomous, rigorous, business results-oriented. Recognized Flutter content creator (YouTube).

Need an app that pays off? Contact me.
  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • pf.innovations
    Development of the RiverAlert mobile application
    July 2025 - February 2026 (7 months)
    🎣 River Alert - Complete Fishing Mobile Application
    Project Overview
    Development of a cross-platform mobile application for fishermen, allowing real-time fishing condition consultation and maintenance of their outing logs.
    Technical Stack
    Frontend

    Flutter (iOS & Android)
    Clean and scalable architecture
    Intuitive and responsive user interface

    Backend & Services

    NestJS for the REST API
    Supabase (authentication, PostgreSQL database, photo storage)
    OneSignal for push notifications
    RevenueCat for subscription management
    API Integrations

    Hub'eau (French government data)
    Vigicrues (real-time flood alerts)

    Key Features
    ✅ Real-time river flow consultation
    ✅ Complete authentication system
    ✅ Fishing log with photos and geolocation
    ✅ GPS tracking of fishing sessions
    ✅ Personalized push notifications
    ✅ Emergency SOS function
    ✅ Subscription model with in-app purchases
    Deployment

    Successful publication on Google Play Store
    Successful publication on Apple App Store (after resolving strict Apple requirements)
    Complete management of certificates and specific iOS/Android configurations
    Demonstrated Skills

    End-to-end cross-platform mobile development
    Integration of third-party and government APIs
    Complete management of the publication cycle (iOS/Android stores)
    Scalable backend architecture
    Implementation of monetization systems (IAP, subscriptions)
    Resolution of complex issues (certificates, store metadata, RevenueCat configurations)
  • ecole hesias
    UML Trainer
    EDUCATION AND E-LEARNING
    February 2025 - February 2025
    During my involvement, I had the opportunity to lead a training session on UML (Unified Modeling Language). This training aimed to present the various UML diagrams, such as use case diagrams, class diagrams, sequence diagrams, and state-transition diagrams. Students practiced through practical case studies on large-scale projects.
    UML Tools
  • ecole hesias
    Merise Trainer
    EDUCATION AND E-LEARNING
    December 2024 - December 2024
    Clermont-Ferrand, France
    During this training, I had the opportunity to teach the Merise method. This learning process involved exploring the different models: MCD (Conceptual Data Model), MLC (Logical Data Model), and MPD (Physical Data Model). Throughout this training, students were tasked with completing practical exercises to apply the Merise method to real projects. They gained a comprehensive and operational understanding of this method, leading to the construction of a robust database.

Reviews

4.0

Out of 2 ratings

C

Christine

Synakene

Reviewed on 6/23/2023

Analysis and expertise mission - Julien was responsive and committed and put us on the right track.
CyrilC

Cyril

Les Dave

Reviewed on 4/30/2021

Recommendations

Jalal MazariJM
Emmanuel BismuthEB
Jalal Mazari and 1 other person have recommended Julien

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • DUT Informatique
    IUT Aubière
    2002
    spécialité systèmes industriels

Certifications

Skill set

Categories