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Tech Partner in Villeurbanne

Your Tech Partner in Villeurbanne

I build business apps, SaaS and MVPs for founders who want a real technical partner, not a contractor.

Valentin Muller - Partenaire Tech à Villeurbanne
Valentin Muller - Partenaire Tech à Villeurbanne

A tech entrepreneur, not a task runner

Based in Villeurbanne, I'm Valentin Muller, tech entrepreneur and founder of Aetherio. I build my own products and bring that same energy to my clients' projects.

My work: turning your idea into a digital product that generates real value. Business apps, SaaS, MVPs. I own the technical strategy, architecture, and development.

What sets me apart: all my clients keep working with me. I invest in your business for the long run, not just until delivery.

I use AI daily to deliver in weeks what would take months elsewhere, without cutting corners.

What I build in Villeurbanne

Digital products designed to generate results

01

High-performance websites

Custom-built sites optimized for conversion, SEO, and speed. No templates, code built to last.

From €2,500
02

Business apps & SaaS

Custom web applications that automate your processes and fuel your growth. Solid architecture, maintainable code.

From €5,000
03

MVP & Rapid prototyping

From idea to first user in weeks. Fast validation, short iterations, focus on what matters.

From €3,000
04

SEO & Performance

SEO and technical optimization built in from day one. Your product visible and fast from launch.

From €800

Why work with me?

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Projects delivered

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Satisfaction

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Years of experience

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Years of studies

Proximity & availability

Based in Villeurbanne, available for in-person meetings. One point of contact who designs and codes your product.

Business vision

I think product, not just code. I understand your founder challenges because I face the same ones daily.

Execution speed

Short cycles, frequent deliveries, visible results in days. AI lets me move faster without cutting corners.

Business Vision

I don't code blindly. I think market, users, growth. Every technical decision serves your business.

Real projects, measurable results

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.

Belho Xper - Mockup Application
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Belho Xper App

Web Application / SaaS

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

Web AppSaaSNestJSVue 3
Fideneo - Mockup Application
Discover

Fideneo

Web Application / SaaS

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

SaaSUX/UIWeb AppCRM
Belho Xper - Mockup Site Web
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BELHO XPER

Accounting Firm

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

Refonte site webUX/UIOptimisation CRO/SEO
Maison & Matières - Mockup Site Web
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MAISON & MATIERES

Interior Design

A premium website with interactive 3D experience and animations for high-end interior decoration specialists.

Design premiumExpérience 3DGalerie

They trusted me

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."

A

Alban B.

CEO Belho Xper

"Il allie une expertise technique pointue à une solide vision business."

C

Charley A.

Co-fondateur Avnear

"La communication a toujours été fluide et les délais respectés, ce qui est rare et très appréciable."

C

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."

S

Sandrine V.

Gérante Sandrin's Nail

"Une entreprise qui sait s'adapter parfaitement au besoin client."

S

Stanislas M.

Commercial

"Depuis la mise en ligne, nous avons remarqué une nette augmentation des appels et des demandes de renseignements."

C

Christophe R.

PDG Ravi Groupe

See all client reviews

How we work together

A simple and transparent process. You know where we stand at every step.

1

We talk

A first conversation to understand your project, your market and your constraints. No lengthy brief, a direct conversation.

2

Scoping and strategy

We define the scope, priorities and timeline together. You know exactly what will be delivered and when.

3

Mockups and validation

I design your product mockups. You validate before I touch code. No bad surprises.

4

Iterative development

I develop in functional blocks. You test as we go, we adjust continuously. No 3-month tunnel with no news.

5

Production deployment

Deployment, SEO, monitoring. Your product is live, fast and indexed.

6

Support and evolution

I stay available after launch. Fixes, new features, maintenance. Your product keeps evolving.

Frequently asked questions

Ça dépend du périmètre. Un MVP démarre autour de 5 000 €, une application métier complète entre 10 000 € et 30 000 €. On cadre ensemble le budget dès le premier échange.

Un MVP peut être en production en 4 à 8 semaines. Une application métier complète entre 2 et 4 mois selon la complexité. Vous avez accès à des versions intermédiaires tout au long du développement.

Pas d'intermédiaire, pas de commercial. Vous parlez directement avec celui qui conçoit et code votre produit. C'est plus rapide, plus transparent, et je m'investis dans votre réussite sur le long terme.

Je suis basé à Villeurbanne mais je travaille avec des fondateurs partout en France, en présentiel ou à distance. La proximité est un plus, pas une contrainte.

C'est le cas de la plupart de mes clients. On part de votre idée et on construit le cadrage ensemble. C'est justement mon rôle de transformer une vision en plan d'action technique concret.

Discover my resources

Have a project? Let's talk.

Free first call, no commitment. Let's see if we can move forward together.

Response within 24h
Free first call
Long-term commitment

Also available in

LyonVilleurbanneValenceAgence LyonAgence VilleurbanneParis