Pierre Roy

Pierre Roy

aka Ayfri · Full-Stack & AI Developer

Hi, I'm Pierre Roy, a full-stack and AI developer based in France, holding a Data Scientist Master's degree from Ynov Aix. I build web products with Kotlin, Svelte and TypeScript, ship AI features in Python, and maintain Kore, the Kotlin library used to generate Minecraft datapacks.

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  • 376GitHub stars
  • 134public repositories
  • 12+years of code
  • 10articles
Pierre Roy

Featured projects

All projects
Kore screenshot

Kore

152

A type-safe Kotlin DSL that compiles straight to Minecraft datapacks, so complex packs never need hand-written JSON or mcfunction files.

KotlinDSLMinecraftGradle plugin
Live Source
PokéCards-Collector screenshot

PokéCards-Collector

2

The whole Pokémon TCG catalogue, English and Japanese, with cards and prices refreshed every day, filters and the collection you actually own.

SvelteKitSupabaseCloudflare WorkersTailwind 4
Live Source
Atom Clicker screenshot

Atom Clicker

15

An incremental game about splitting atoms: buildings, upgrade trees, prestige runs and an online leaderboard.

Svelte 5TypeScriptSupabase
Live Source
GPT Images screenshot

GPT Images

5

A bring-your-own-key front-end for GPT Image and Sora, with reference images, batch generation and live cost tracking.

SvelteKitOpenAI APITypeScript
Live Source
Cat'aclsym: Claw of the Dead screenshot

Cat'aclsym: Claw of the Dead

A 2D tower defense where cats hold the line against a zombie horde: eight levels, traps, per-level challenges and an armory progression tree.

Godot 4GDScriptTeam project
Source
Realtime Todolist screenshot

Realtime Todolist

1

Shared todo lists that stay in sync live for everyone holding the link, with import, export and drag ordering.

SvelteRealtimeCloudflare Pages
Live Source

Tools I use most

All skills
Svelte language

Svelte

Kotlin language

Kotlin

TypeScript language

TypeScript

JavaScript language

JavaScript

CSS language

CSS

HTML language

HTML

MCFunction language

MCFunction

Python language

Python

Experience

Details

Two years as a full-stack developer at Eliophot building Svelte and Astro platforms, then Python, AI agents and DevOps work at Link2Brain, the Marseille startup grown out of the ScriptGraf research project I worked on at Ynov.

  1. 2025 - 2026Lead Full-Stack & AI Developer Link2Brain
  2. 2023 - 2025Full-Stack Developer Eliophot
  3. Summer 2023AI Research, ScriptGraf Ynov
  4. Summer 2022Web Developer BlueFrog

Latest articles

All articles

The long version

From my first Python scripts in 2014 to Kotlin, Minecraft datapacks and AI work: the whole story, project by project.

Read my story

How this site is built

Written entirely in Kotlin with Kobweb and Compose HTML, statically exported, with GitHub data fetched at build time.

About this portfolio