Walter — wlt / ziffy Netherlands

I build websites. And a horror game, a YouTube channel, and a few songs.

Looking for work

Currently building the L V M I N N A shop — a luxury candle store from Groningen.

See my work

01 / SELECTED WORK

MADE TO
STAND OUT.

Software, websites, videos and music — a few projects that show the range. Pick one to take a closer look.

All projects
  1. 01 Secunda Fatală Video / YouTube · 2026 A Romanian YouTube channel explaining real accidents and disasters — step by step, with illustration and animation.
  2. 02 MOOD99 Music / YouTube · 2026 Music for every mood — an AI-assisted artist project mixing rap, trap, pop and Balkan influences in Romanian…
  3. 03 VioTaxi Web · 2026 A fast, mobile-first website for a Dutch taxi company — online booking, clear fixed tariffs and one-tap call…

THE NUMBERS · LIVE

Thank you
for these numbers.

Every subscriber and every listener is a real person who chose to press play. Small channels, honest numbers — thank you for being part of them.

Live from YouTube & Spotify · updates every minute · just now

BUILT FAST · MEASURED

Loads before
you blink.

This page shows its main content in 0.33 s, doesn’t shift a pixel while it loads and answers a tap in 16 ms. Every site I build is held to the same Core Web Vitals Google uses to rank pages.

  1. 0.00 s
  2. 0.08 s
  3. 0.16 s
  4. 0.25 s
  5. 0.33 s — main content painted
0.33 s this page
0 s 2.50 s · Google’s “good” limit

7.6× faster than the limit

  • LCP

    Largest Contentful Paint

    Good
    0.33s

    Main content on screen · 87% under the limit

    Good ≤ 2.50 sPoor > 4.00 s

  • CLS

    Cumulative Layout Shift

    Good
    0.00

    Nothing jumps while it loads · 100% under the limit

    Good ≤ 0.10Poor > 0.25

  • INP

    Interaction to Next Paint

    Good
    16ms

    Answer to a tap or click · 92% under the limit

    Good ≤ 200 msPoor > 500 ms

Measured on this homepage · Chrome DevTools, local metrics

SEO · DONE BY THE BOOK

Found, not
just fast.

Speed helps a page rank; clean structure helps it be understood. Search engines read this site exactly the way it’s meant to be read — who I am, what I make and where to find it.

  • Title, description & canonicalOn every page, written for people first
  • Structured data (JSON-LD)Person, WebSite, Breadcrumbs, MusicGroup, CreativeWorkSeries
  • XML sitemapEvery page and project, with the last change date
  • One H1, clear headingsThe page outline reads like a table of contents
  • Share previewsOpen Graph & Twitter cards with a proper image
  • Images done rightAlt text on every image, lazy-loaded below the fold

02 / HOW I BUILD

From idea
to shipped.

The same loop for a website, an app or a tool. Pick a step — or just watch it build itself.

notes / idea.md

Understand the goal, the people using it and what “done” looks like. Sketch it before building it.

I’m Walter, a software developer and creative builder. This is where design, code and content come together.