FR

Available for new projects

Bertrand Sudre, freelance web developer

I design custom websites and web applications: fast, secure, accessible and optimized for search engines. Based in Bois-Colombes, near Paris, I work remotely with clients across France and Europe.

See my servicesContact me

Two worlds, one contact

Running a business or running a stream channel are different needs. The methods are the same.

What I guarantee

Whatever the service, every project ships with the same foundations. These are commitments, not options.

  • Custom development

    Showcase sites, e-commerce and web applications built from A to Z, from specifications to deployment, with maintainable and scalable code.

  • SEO & visibility

    On-page optimization, structured content, rich data and technical improvements for lasting visibility on search engines and AI answer engines.

  • Web performance

    Minimal loading times, green Core Web Vitals and optimized PageSpeed scores for a smooth experience on every device.

  • Security

    Modern protocols, security headers, application firewalls and SSL certificates to protect your data and your users' data.

  • Responsive & accessibility

    Interfaces adapted to every screen and compliant with accessibility standards (WCAG), so no user is left behind.

  • Automation & AI

    Automated workflows with n8n and Make, AI integrated into your business tools to save time on repetitive tasks.

Skills

A modern frontend stack, solid backend foundations and proven tools to deliver fast and well.

Frontend

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • Three.js

Backend & CMS

  • PHP
  • Symfony
  • Twig
  • WordPress
  • Elementor

Tools

  • Docker
  • GitHub
  • Figma
  • Notion

Automation & streaming

  • n8n
  • Make
  • Discord.js
  • Twitch API
  • OBS WebSocket

Experience

More than ten years across digital project management, systems administration and web development.

  1. Jul. 2025 — Present

    Digital production coordinator — Edreams Factory

    Coordination of digital production (work-study): process optimization, data analysis and project tracking.

  2. Oct. 2023 — Present

    Freelance Web Developer — Erdus

    Design and delivery of custom web projects for varied clients, from mockup to deployment: showcase sites, e-commerce, hardened blogs.

  3. Oct. 2019 — Sep. 2021

    Assistant project manager — French Ministry of the Armed Forces

    Steering of digital projects and comparative analysis of CAD software for the needs of technical teams.

  4. Sep. 2017 — Aug. 2019

    Administrative and IT manager — GMF Assurances

    IT infrastructure management, user support and administration of internal tools.

  5. Sep. 2015 — Aug. 2016

    SharePoint administrator — PSA Peugeot-Citroën

    Set-up of SharePoint sites and training of teams for everyday use.

Projects

A selection of recent work, from a mobile app to a performance-tuned online store.

  • Erdus Games (in French)

    Erdus Games

    Web game with two modes: Depixelize (the image sharpens progressively, guess it before it is clear) and Guess (one more clue after each mistake). Nine themes, four levels, a daily challenge and challenges between friends, installable on mobile (PWA). Vanilla JavaScript and Canvas, data from the RAWG, TMDB, AniList and flagcdn APIs.

    • JavaScript
    • Canvas
    • REST API

    View the project page — Erdus Gamesgame.erdus.fr (opens in a new tab)

    Related service: Streaming development

  • Cadence (in French)

    Cadence

    Free, ad-free social step counter for Android: groups, leaderboards and challenges between friends. Steps are counted in the background without GPS. Expo, React Native and TypeScript, a native Kotlin module, Supabase back end.

    • React Native
    • Kotlin
    • Supabase

    View the project page — Cadence

    Related service: Website development

  • Carnet (in French)

    Carnet

    Offline note-taking web app with no account: light Markdown, tags, instant search, voice dictation, trash and export. Notes never leave the device. Vanilla JavaScript, tested with Playwright.

    • PWA
    • IndexedDB
    • Playwright

    View the project page — Carnetnote.erdus.fr (opens in a new tab)

    Related service: Website development

  • Erdus Inspector (in French)

    Erdus Inspector

    Chrome extension for a one-click audit of the open page: security headers, cookies, exposed WordPress version, CDN cache and SEO, with a score, explanations and a Markdown report. No data collected. Dependency-free JavaScript, Manifest V3.

    • Chrome Extension
    • Web security
    • SEO

    View the project page — Erdus Inspectorchromewebstore.google.com (opens in a new tab)

    Related service: Website development

  • Épure (in French)

    Épure

    Chrome extension that declutters pages: cookie banners refused whenever a “Refuse” button exists (never “Accept”), newsletter popups, app banners and chat bubbles hidden, autoplaying videos stopped, plus a reading mode. No network requests, nothing collected. Dependency-free JavaScript, Manifest V3.

    • Chrome Extension
    • Privacy
    • JavaScript

    Related service: Website development

  • Erdus (in French)

    Erdus (opens in a new tab)

    Personal portfolio built with Next.js and TypeScript: multilingual SEO, optimized performance and custom design.

    • Next.js
    • TypeScript
    • SEO

    Related service: Website development

  • 3D Portfolio (opens in a new tab)

    Immersive 3D experience in the browser with Three.js: animations and striking visual effects.

    • Three.js
    • React
    • WebGL

    Related service: Website development

  • Manufacturist

    WordPress e-commerce site tuned for performance: shorter loading times and a smoother checkout.

    • WordPress
    • E-commerce
    • Performance

    Related service: Website development

  • Observatoire du Paysage UTLB (in French)

    Observatoire du Paysage UTLB (opens in a new tab)

    WordPress blog with custom hardening and a Noptin newsletter integration.

    • WordPress
    • Security
    • Newsletter

    Related service: Website development

Frequently asked questions

What kinds of projects do you take on?

Two worlds: digital projects for businesses (website development, project management) and projects for streamers and gamers (Discord and Twitch bots, overlays, PC building). Methods and quality requirements are the same.

Do you only work in the Paris area?

I am based in Bois-Colombes, near Paris, but I work remotely with clients across France and Europe. We talk by video call and in writing, as you prefer. Only PC building involves an in-person handover or shipping.

How do you optimize a website for search engines?

I work on three axes: technical (performance, structured data, internal linking), content (semantics, keywords) and user experience (accessibility, mobile). Every site ships with a sitemap, optimized tags and green Core Web Vitals.

How do you secure the websites you deliver?

Every site ships with HTTPS, strict security headers, up-to-date dependencies and, for WordPress, specific hardening: application firewall, login attempt limiting and automated backups.

Have a project in mind?

Let's talk. Describe your needs and I will reply within 48 hours with a first analysis and an estimate.