Êtes‑vous une agence ou un studio ?
Nous sommes un studio dirigé par un lead développeur, avec un collectif d'experts (SEO, design, contenu, média). Agilité et transparence.
We build fast websites, robust web apps and strong brand identities for Lyon businesses.


Aetherio is a studio led by a lead developer, teaming with experts in Web, SEO, design, content and photo/video.
This model assembles the right team for each project and delivers faster, without traditional agency overhead.
We target measurable performance, adapt to your needs, the trust relationship and the respect of your budget.
Based in Lyon, working across the metropolitan area and remotely as needed.
Showcase, e‑commerce, corporate: SEO‑ready, easy to manage, fast and conversion‑oriented for Lyon.
SaaS, portals, back‑offices: modern architecture (Vue/Nuxt/Node), security, scalability and user experience.
Workshops, wireframes, prototyping, visual identity and design systems for clarity and consistency.
Technical SEO, internal linking, local semantics (Lyon), editorial plan and performance optimization.
Authentic visuals to elevate your brand and improve conversion.
Creation of 3D for your projects, websites, applications, visual identities, etc.
Projects delivered
Satisfaction
Years of experience
Years of studies
Meetings across Greater Lyon, tight project control and direct access to makers.
Tech, SEO, design, content & media — a team aligned with your goals.
Fewer intermediaries, short cycles, fast decisions and measurable deliverables.
Shared KPIs, Lyon local SEO, conversion, performance and ROI.
Every project shown here solved a real business problem. SaaS applications, business tools, high-performance websites. Here's what I've built for my clients.

Multi-tenant SaaS application for accounting firms: client management, automated tax tasks and real-time planning.

Fideneo is an all-in-one cockpit designed to simplify and automate beauty salon management.

A custom website redesign to reposition Belho Xper as a modern, reliable accounting firm with high added value.

A premium website with interactive 3D experience and animations for high-end interior decoration specialists.
Founders and business owners who had a project, a need, a deadline. Here's what they have to say.
"Disponibilité, réactivité et implication. Valentin est professionnel et pédagogue."
Alban B.
CEO Belho Xper
"Il allie une expertise technique pointue à une solide vision business."
Charley A.
Co-fondateur Avnear
"La communication a toujours été fluide et les délais respectés, ce qui est rare et très appréciable."
Chihab A.
CEO E-commerce
"Valentin a su être à l'écoute de mes attentes et de mes besoins. Les résultats ont été plus que satisfaisants."
Sandrine V.
Gérante Sandrin's Nail
"Une entreprise qui sait s'adapter parfaitement au besoin client."
Stanislas M.
Commercial
"Depuis la mise en ligne, nous avons remarqué une nette augmentation des appels et des demandes de renseignements."
Christophe R.
PDG Ravi Groupe
A simple and transparent process. You know where we stand at every step.
A first conversation to understand your project, your market and your constraints. No lengthy brief, a direct conversation.
We define the scope, priorities and timeline together. You know exactly what will be delivered and when.
I design your product mockups. You validate before I touch code. No bad surprises.
I develop in functional blocks. You test as we go, we adjust continuously. No 3-month tunnel with no news.
Deployment, SEO, monitoring. Your product is live, fast and indexed.
I stay available after launch. Fixes, new features, maintenance. Your product keeps evolving.
Nous sommes un studio dirigé par un lead développeur, avec un collectif d'experts (SEO, design, contenu, média). Agilité et transparence.
Oui : identité, design, développement, SEO et média, un seul pilotage, un seul planning.
Sites vitrines dès 2 500€, e‑commerce/développement spécifique dès 5 000€. Devis détaillé après cadrage.
Oui, dans toute la métropole et en France, en présentiel et à distance.
Vue.js, Nuxt.js, Node.js, TypeScript, avec intégration CMS (Strapi, WordPress) si pertinent.
We’ll get back within 24h with a first analysis






Also available in