Hi, I'm Clément 👋

Full-stack Web developer

Mobile app developer

CTO as a service

Full-stack Web developer

I turn your ideas into desirable, fast and maintainable web & mobile products.

Native applications Flutter, frontend Next.js/React, backend Node.JS & Ruby on Rails with an obsession: ship fast, without technical debt.

As a senior freelancer, I adapt to your environment and constraints — agency, startup or in-house team.

Clément Demily

My services

Full-stack development

A complete web product, from the UI to production: fast, maintainable, and ready to evolve.

  • Front Next.js/React (performance, accessibility, SEO)
  • Back-office / client area / automations
  • API & database
  • Deployment, CI/CD, monitoring

Flutter Mobile Apps

A smooth, maintainable iOS/Android app, ready for the app stores.

  • Clean Architecture
  • Firebase / API / offline
  • Delivery: stores & analytics
  • Takeover & stabilization of existing app

CTO as a Service

On-demand technical leadership: decisions, standards, coaching.

  • Scalable software architecture
  • Code review & quality
  • CI/CD & delivery process
  • Coaching & upskilling

Flutter application audit

A prioritized action plan: what to fix, in what order, and why.

  • Quality / debt / dependencies
  • Performance / accessibility
  • Risks & quick wins
  • Debrief + backlog ready for execution

Not sure which offer? Describe your situation in 5 lines and I'll tell you which one fits best.

Recent Articles

Flutter vs React Native: which framework to choose in 2026?
Technical and pragmatic comparison between Flutter and React Native in 2026. Architecture, performance, developer productivity, ecosystem: find out which one to choose depending on your project, your team and your constraints.
6 min
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ASO: the complete guide to boost your installs (App Store)
Complete guide to optimizing your iOS app on the App Store. Metadata, screenshots, keywords, Product Page Optimization: discover a simple, measurable, and iterative ASO strategy.
15 min
Read more
Appwrite vs Firebase for Flutter: the honest comparison (features, costs, ops)
Honest comparison between Appwrite and Firebase for Flutter: features, costs, ops. Firebase for the full product package, Appwrite for open-source and self-hosting. Discover which to choose based on your context.
7 min
Read more
Flutter Quick Actions: 10 minutes, big impact
How to add Quick Actions to your Flutter app in 10 minutes? Discover how to integrate them with GoRouter and how to measure them to maximize impact.
6 min
Read more

Contact

Let's stay in touch

Feel free to contact me if you have any questions or if you'd like to collaborate on a project. I usually respond within 24 hours.

Location

France

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