Jacek Grecki

Black-and-white portrait of Jacek Grecki in rimless sunglasses, a cloudy sky reflected in the lenses

I design and buildwebsites, apps & digital experiences.

Based in the Netherlands

Homepage of a home and fragrance boutique, built on Shopify Web DietCoach on a phone — the nutrition engine Apps Concept site for a construction company: the house builds itself as you scroll Experiments
Selected work Scroll to explore
  • Websites
  • Web apps
  • Online stores
  • Shopify
  • Mobile apps
  • PL / NL / EN
  • Client panel
  • Fast on every phone
  • Technical SEO
  • Security headers
  • Motion & 3D
  • Made in the Netherlands

Selected work · 2026

Selectedwork (06)

Recent projects. Client names stay private — the work speaks for itself. My own products carry their names.

Client · Website

Creative studio & print shop

Rotterdam

Year
2026
Role
Design · Development · PL / NL / EN

A price calculator that answers “how much?” before anyone has to ask — live prices per product and quantity, in three languages.

  • Vanilla JS
  • GSAP
  • i18n
Homepage of a boutique for home fragrance and interior pieces: a warm living room with a fireplace and a serif headline

Client · Online store

Home & fragrance boutique

Shopify store

Year
2026
Role
Design · Shopify development · Copy

A calm, editorial shop that feels like walking into the store — quick on a phone and easy for the owner to run.

  • Shopify
  • Liquid
  • SEO

Own product · SaaS

DietCoach

Diet plans for personal trainers

Year
2026
Role
Product · Design · Full-stack

Trainers build diet plans for their clients in one place. The landing page tells the story with a scroll-driven 3D crystal.

  • Next.js
  • Supabase
  • TypeScript
diet-coach.app
The G.O.T website panel: text fields in Dutch and Polish on the left, a live preview of the website on the right

Own product · Web app

G.O.T Panel

A panel for every site I build

Year
2026
Role
Product · Design · Full-stack

Clients change their own texts, prices and photos with a live preview — in every language of the site, without being able to break the design.

  • Next.js
  • Supabase
  • Magic link
Pulse, the job list of a repair desk: numbered jobs with customer, device, fault and status

Own product · Desktop software

Pulse

Repair intake for workshops

Year
2026
Role
Product · Design · Development

A repair receipt without the paper: runs on the shop’s own computer, no cloud, no subscription, prints A4 in Dutch, Polish or English.

  • Vanilla JS
  • IndexedDB
  • Offline-first

Concept · Fictional brand

Kubik

Construction company concept

Year
2026
Role
Concept · Design · Motion

Scroll and the house builds itself — a 121-frame timelapse scrubbed by the page, from bare plot to handing over the keys.

  • Canvas
  • Frame scrub
  • AI video

About

About Jacek Grecki

A website isn’t decoration. It’s a tool — fast, clear, and yours to run.

Close-up of Jacek’s sunglasses: a flat landscape with clouds and a lake reflected in the lens
Fig. 02 — The view from here

I’m Jacek Grecki, an independent designer and developer in the Netherlands, working as G.O.T Developer Studio. I design and build websites, online stores, web and mobile apps and small tools for businesses — mostly here in the Netherlands, often for Polish entrepreneurs who work here too.

You deal with one person, from the first sketch to launch day. Every site speaks the languages of your customers, is tuned for the phone in their hand, and comes with a panel where you change texts, prices and photos yourself.

  • 3languages on every site — Polish, Dutch, English
  • 1panel that works for every site I build
  • 1person, from first sketch to launch

Capabilities

What I do.

01

Websites & e-commerce

Company sites, landing pages and Shopify stores — built from scratch, quick on a phone, with technical SEO in place from day one.

  • Next.js
  • Vanilla JS
  • Shopify
  • SEO
02

Web & mobile apps

Dashboards, SaaS and internal tools that replace spreadsheets and paper — in the browser, or as an app for iOS and Android.

  • React
  • TypeScript
  • Supabase
  • Expo
03

Client panel & content

The G.O.T panel lets you edit texts, prices and photos with a live preview. All languages side by side, nothing you can break.

  • PL / NL / EN
  • Live preview
  • Magic link
04

Motion & 3D

Scroll-driven stories, video heroes and 3D scenes — used where they help you sell, and kept light enough for a phone.

  • GSAP
  • Three.js
  • Video
  • Blender

Also: security headers (CSP), spam-proof forms, Python automations.

Process

How we work.

  1. 01

    Talk

    A call or a WhatsApp message. We pin down the goal, the audience, the languages and the budget.

  2. 02

    Design

    You see the first screens on your own phone before any production code is written.

  3. 03

    Build

    Code, content in three languages, speed and SEO. You follow along on a private preview link.

  4. 04

    Launch

    We go live on your domain, you get the panel, and I stay around for changes.

Contact

Let’s buildsomething.

Tell me what you have in mind — a new site, a shop, an app or a tool. You’ll get an honest answer, from me.

WhatsApp+31 6 45 76 30 94 E-mailsupport@gotdeveloper.studio
Location
The Netherlands
Local time · Amsterdam
Languages
Polish · Dutch · English