Quentin Mayer

50.08°N 14.44°E · Prague

Hi, I'm Quentin. I build web and mobile products from the database up.

Full-stack developer from France, now living in Prague. Before that: Nancy, Luxembourg and a year in Seoul. Off screen I run, climb, cook food and travel.

See my workGitHubLinkedInInstagramWhatsApp
Quentin by the sea at sunset
Quentin in a Czech football jersey, out for a run
Quentin taking a selfie with an elephant

Four cities, one stack.

Every move added a layer: low-level C at Epitech, data architecture at PwC, mobile and databases in Seoul, production work from Prague.

  1. 48.69°N 6.18°E · 2022NancyEpitech, Programme Grande École. Learning to code close to the metal in C and C++.
  2. 49.61°N 6.13°E · 2023LuxembourgPwC, Data Architecture team. First Scrum team, first real metadata tool.
  3. 37.57°N 126.98°E · 2025SeoulExchange year at Chung-Ang University, ambassador for 30 Epitech students, and my first freelance job.
  4. 50.08°N 14.44°E · NowPragueWorking remotely on the whole La Salle du Temps stack, and looking to build my future in IT here in Prague.

Things I've built

The La Salle du Temps planning dashboard, with the member app in front of it
Flagship · 2025 → now

La Salle du Temps

A coaching studio's whole ecosystem: back-office dashboard, mobile booking app, REST API and showcase website.

  • Redesigned and rebuilt the back-office dashboard, from Figma to database rework.
  • Built the mobile booking app, front end and back end.
  • Now working remotely: deployments, environments and the production database.
  • React
  • React Native
  • Express
  • PostgreSQL
  • Vercel
The iziClub website, with a club page from the app in front of it
Co-founder · 2026 → 2027

iziClub

An admin dashboard for local sports clubs and a public app to find clubs and events. I lead a team of four, plan the sprints and run the beta with real users.

iziclub.fr ↗
PwC Luxembourg · 2023

Metadata management tool

Front-end and back-end features for an internal tool, inside the Data Architecture team's Scrum workflow.

Front-end · 2025

A senator's website

The UI of a French senator's official site, built from scratch in PHP and WordPress with a designer.

Experience

When I'm not coding

The same habits show up at work: steady pacing, problem solving, and a team to play for.

Quentin with his finisher medal after a half-marathon
1:27:00Half-marathon personal best.Next up · Frankfurt Marathon · Copenhagen Marathon
Quentin on a bouldering wall
6CClimbing grade. Getting back on the wall after injuries.
A strawberry cake Quentin baked
Strawberry cakeBaking and cooking dishes from around the world.

I speak

  • Français · native
  • English · C1
  • Deutsch · A2
  • 한국어 · beginner
  • Čeština · učím se (beginner)

Toolbox

LanguagesTypeScript, JavaScript, Python, C, C++, C#, Kotlin, PHP, SQL, Haskell
Front-end and mobileReact, Next.js, React Native, WordPress, Figma
Back-endExpress, .NET, Flask, REST APIs, Stripe
DatabasesPostgreSQL, SQL Server, Supabase
ToolsGit, GitHub, Vercel, Jira, Scrum