Fig. 04.1 — Product · Web & mobile
Pixel
CTO & sole developer · 2025 — present
NFC business cards: one tap to share your contact, one platform for everything else.
- Next.js 16
- React 19
- TypeScript
- PostgreSQL
- Prisma
Available · Based in Rouen, France
I build software and I fix phones.
I'm the CTO and only developer behind Pixel, which I built from scratch. I also repair phones in Rouen. Same habit in both: take it apart, understand it, make it work well.
Fig. 01 — SoftwareWeb & mobile productsPixel, Probook, TonightPass. For each one: the problem, what I built, and the technical decisions.See projects →Fig. 02 — RepairsPhone repairScreens, batteries, charging ports… iPhone and Android, all brands. Free quote before any work starts.Get a quote →
- Right now
- Pixel
- CTO · sole developer
- My product
- Probook
- Invoicing SaaS
- Tools
- Next.js · Expo
- TypeScript · Postgres · Prisma
03 / Services
What I can do for you
I take a product from idea to production, and I stick around afterwards. You talk directly to the person writing the code.
- 01
Your product, end to end
A custom web app or SaaS: database, interface, payments, deployment. Like Pixel or Probook.
- 02
A mobile app
iOS and Android from a single codebase (Expo / React Native), connected to your platform.
- 03
A website that brings you customers
For a shop or a freelancer: fast, bilingual if needed, and well ranked on Google.
- 04
Taking over an existing project
Code inherited from an agency, a stalled project, bugs in production: I audit, stabilise, then move it forward.
04 / Projects
Selected work
Fig. 04.2 — My product · SaaS
Probook
Maker · sole developer · 2026 — present
Invoicing, stock and point of sale for small businesses. First a desktop app, now a SaaS.
- Next.js 16
- React 19
- TypeScript
- PostgreSQL
- Supabase
Fig. 04.3 — Startup · Apprenticeship
TonightPass
Web developer (apprentice) · 2022 — 2023
Nightlife ticketing: the mobile app, the website and the open-source design system of a startup.
- Expo
- React Native
- Expo Router
- TypeScript
- styled-components
05 / Method
How I work
I understand your business before writing code
For Probook I implemented Algerian stamp duty from the law itself, and checked the maths against the ministry's official example.
I check what I ship
On Pixel, an audit rated the system "fragile". Today: no critical issues left, and tests that guard the important rules on every release.
I build for real users
French, English, Arabic; mobile first; dark mode; accessibility. Your customers aren't all like you.
06 / About
About
I'm Younes, a developer in Rouen, France. I have a Bachelor's in software engineering (Need for School, 2023), earned as a work-study apprentice, and since then I've been building web and mobile apps.
Today I'm the CTO of Pixel, which I built on my own, and I'm developing Probook, my own invoicing software. I'm also lead developer at onRuntime Studio, a collective of developers and designers between Paris and Rouen.
On the side, I repair phones. It's the same satisfaction as code: understand how it's made, and get it working again.
“Younes quickly adapted to the specific environment of our structure and he showed great rigor and motivation. He has produced innovative tools that are now used daily within the company. I have no doubts that he will be a good element wherever he goes.”Valentin Papet — CEO, Rouen Informatique
07 / Contact
Let's work together
A product to build, a contract, or just a question? Write to me, I reply quickly.
- LinkedIn(opens in a new tab)
- GitHub(opens in a new tab)
- Download my CV (PDF)
- For a repair, the dedicated page is the fastest way. Repairs →