Trusted by teams big and small

OVH
Airbus
Heetch
MYM
Cheerz
Ikare.health
OVH
Airbus
Heetch
MYM
Cheerz
Ikare.health

Based in Toulouse 🇫🇷, with over a decade at the intersection of business and technology

From my roots at EPITECH to founding my own businesses, I specialize in complex architectures — moving fluidly between Go / Nest.js backends, React front ends and mobile apps. I believe the best products aren't just coded; they're engineered with a deep understanding of user psychology and business scalability.

Creativity

Innovation

0 → 1

+40

Products Shipped

+12

Years of Experience

+10

Brands Built For

Where engineering meets product

Go / Nest.js
Backends

React
Front Ends

Mobile
Apps

IoT &
Hardware

0 → 1 &
Tech Lead

Have an idea to ship? Let's turn it into a real product.

Let’s Collaborate View Portfolio

A few projects I've shipped recently

Heetch

Heetch

Ride hailing app. I was doing Android and Golang.

Mobile 2 years
Touch Surgery

Touch Surgery

Built apps on Google Glass and mobile phone.

Mobile IoT 2 years
Colgate

Colgate

Built an SDK to connect to smart toothbrushes.

IoT Mobile 1 year
Doordeck

Doordeck

Built a mobile SDK to open smart doors.

IoT Mobile 6 months
Roland-Garros

Roland-Garros

Built their NFT platform.

Web 3 months
Ikare.health

Ikare.health

Built a health platform to help patients live longer in good health.

Web 2 years
MYM

MYM

Led the project that let the company scale and grow profit by 50%.

Web 9 months
AXA Lock

AXA Lock

Built an app to control smart locks for bikes.

IoT Mobile 2 months
RealWear m100/m300

RealWear m100/m300

Built many apps on RealWear head-mounted devices.

Mobile IoT 3 months
Sama

Sama

B2B coaching app.

Mobile 3 years

The person behind the work

Guillaume Agis
Guillaume Agis

Founder & Lead Engineer

How I approach every build

Philosophy

“Make it happen, whatever it takes — from 0 to 1.”

The mindset behind every project.

Track record

40+

Products shipped across web, mobile and IoT.

What matters

The real measure of success is the value provided to others.

How I build

“The best products aren't just coded; they're engineered with a deep understanding of user psychology and business scalability.”

Guillaume Agis

Founder & Lead Engineer

Ways we can work together

Project

Fixed-scope build. Great for an MVP, a web app, or a focused feature delivered end to end.

Let’s talk / per project

Start a project
Includes

  • Scoping & architecture

  • Backend, frontend & mobile

  • Production deployment

  • Clear, frequent updates

  • Handover & documentation

Retainer

Ongoing engineering & tech leadership for teams that need a senior pair of hands month to month.

Let’s talk / monthly

Get in touch
Includes

  • Senior-level engineering

  • Architecture & code review

  • Full-stack & mobile

  • Flexible monthly commitment

  • Direct, async communication

Got questions? Here are some answers

Full-product engineering: Go / Nest.js backends, React front ends, mobile apps and IoT / hardware integrations. From early-stage MVPs to scaling existing products.

I lead the engineering hands-on and bring in trusted specialists when a project needs extra capacity. You always have a single, senior point of contact.

Either fixed-scope projects or a monthly retainer. We scope the goal together, agree on milestones, and I ship in short iterations with frequent updates.

Yes. I offer post-launch support to ensure a smooth rollout, plus ongoing maintenance for clients who need regular updates or technical assistance.

Toulouse, France, working with clients remotely. Engagements run through Adnalyze SAS.

Got an idea? Let's build it

From a rough concept to a shipped product — tell me what you're trying to build and let's make it happen, whatever it takes.

Let’s Collaborate
Contact