Arthur, from Belgium. Self-taught developer, starting formal web and app development studies in September 2026.

I build things end to end and keep the stack as small as the problem allows.

A progressive web app for tracking an F1 UNO Élite trading-card collection: 101 cards from the 2025 season, each in up to 16 variants, with a six-level rarity system, badges and completion stats.

Live app · Source

• Vanilla JavaScript, zero runtime dependencies — no framework, no SDK, no CDN. esbuild is the only build-time dependency.
• Offline-first service worker with a versioned precache. New versions download in the background and are applied from a one-tap banner instead of a forced reload.
• Optional Supabase sync over pure REST fetch() — no SDK — using email OTP codes, because magic links break inside an installed PWA.
• Seven languages, every user-facing string included.
• 166 tests on Node's built-in runner, run in GitHub Actions alongside a check that the committed bundle still matches the sources.

Unofficial fan project, non-commercial. Not affiliated with Formula 1 or Mattel/UNO.

Java, web fundamentals, and the basics of cybersecurity.

Through GitHub — @Arts44.