Freelancer profile translated to English.
Back to original languageAbout Ecalle
đ Lead Flutter Developer | +10 years of experience | +30 applications in production
I design and develop custom, high-performance, and scalable mobile applications, with a strong focus on UX, technical quality, and production reliability.
My goal: to transform your ideas into solid, elegant, and scalable mobile products.
Startups, scale-ups, or companies: I support you from conception to production, with **a product-centric, full-stack, and impact-oriented approach**.
đȘ Skills
- Mobile Development: Flutter (iOS / Android / Web) â 100% custom apps
- Architecture & Quality: Clean Architecture, Bloc / Riverpod, performance, scalability
- Backend & APIs: Firebase, Google Cloud, PostgreSQL, REST APIs
- Real-time & Data: WebSockets, Firestore, Push notifications, offline, synchronization
- Product & UX: user journeys, onboarding, animations, advanced mobile UX
- Back-office: administration interfaces, dashboards, business tools
- Tools: Git, CI/CD, Figma đ€
đ Representative Projects
- Melba â iOS/Android App with hundreds of thousands of users and +âŹ100k MRR
- Gamby â Sports betting app among friends (real-time, money management, scalability)
- Les Bienfaiteurs â Flutter Web / iOS / Android e-commerce App (single codebase)
- Odontis â Dentist â Student matching app (real-time chat, business algorithm)
đ§ Areas of Expertise
Mobile apps · SaaS · Fintech · Social · E-commerce · Media · Marketplace
đ Technologies
Flutter · Firebase · Google Cloud · PostgreSQL · APIs · iOS · Android
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- FlappyCTO - Co-founderDIGITAL AND ITMay 2021 - Today (5 years and 3 months)Paris, France**As a Flutter developer at Flappy**, I design and develop custom, high-performance, and scalable mobile applications, intended for deployment on iOS, Android, and the web from a single codebase.I focus on front-end architecture, code structuring, state management, performance, and overall user experience quality. Special attention is paid tofluidity, animations, user journeys, and ergonomics**, to offer **100% custominterfaces, consistent with product and business objectives.I work in close collaboration with theUX/UI, back-end, and product teamsto ensure smooth integration between design, technical constraints, and business needs.My role is to buildrobust, maintainable, and scalableinterfaces capable of supporting application scaling, functional evolution, and real user usage in production.
- ESGIInstructorEDUCATION AND E-LEARNINGOctober 2019 - Today (6 years and 10 months)Paris, FranceLecturer / Trainer â ESGII teach at ESGI as a trainer formobile development with Flutter**, **Firebase & Cloud environmentsfor mobile applications, as well as best practices for versioning, integration, and **continuous deployment (Git & CI/CD)**.My teaching is resolutely **practice and production-oriented**, with the aim of giving students a realistic vision of professional mobile development: code quality, architecture, performance, UX, and team collaboration.I also act as a **mentor and advisor for final-year graduation projects**, guiding students on product design, technical choices, project organization, and preparation for actual production deployment.My approach aims to bridge the gap between **theory, field constraints, and professional world requirements**, in order to prepare students to design reliable, maintainable, and evolving applications.
- Ynstant
On Malt
Flutter ExpertFebruary 2023 - February 2023Paris, France- Full audit of the existing Flutter application.
- Creation of a summary document of points of attention.
- Oral presentation and mini-training on key points for internal developers.
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Education
- Bachelor's Degree, Software EngineeringESGI2017Licence, Ingénierie logicielle
- Associate's Degree, Software Solutions and Business ApplicationsItic2016Bts, Solution Logicielles et Applications Metiers