Karol Zwiefka

I turn ideas into
working tools, with AI.

I have a full-time job that isn't about code. These tools were built after hours — some for myself, some on commission, none of them to fill a portfolio.

Work

Three projects

A day's meal plan screen in the Smakowity Plan app

Smakowity Plan

Smakowity Plan (“Tasty Plan” — meal planner) is a PWA that plans a family's meals for the week with AI and turns them into a shopping list grouped by store category.

2025–2026for my familyPWAPHPGemini

Print preview of a completed survey in the Ankiety app

Ankiety

Ankiety (“Surveys”) is an app for a guesthouse reception desk that collects medical data — and deliberately has no server. Everything stays in the browser.

2025–2026client projectPWAIndexedDBpdf.js

Home page of the zlitego.pl shop

zlitego.pl

The first thing I ever built with AI — a site for the solid-wood furniture I make, built my own way. Stripe payments, InPost shipping, an admin panel, and a custom CAD sketchpad.

2023–2024first project with AIPHPReactzlitego.pl — open

About

Who I am

I have a full-time job, and I've been using AI since 2023 to work faster and smarter.

I'm not a programmer by trade. My strength is that I can define precisely what needs to be built and why. AI writes the code, but the decisions are mine: I set the boundaries, test, and throw out what doesn't work — and I describe it in the case studies, missteps included.

I build tools for real problems: digitising the survey at a guesthouse reception desk, planning a household's meals, and before that zlitego.pl — the site I'd always wanted, built my own way.

Want to talk about building tools, about working together, or compare notes? Get in touch.

Technologies in these projects

In the browser

  • JavaScript (ES2022)
  • React
  • Vite
  • PWA / Workbox
  • IndexedDB

On the server

  • PHP 8
  • MySQL
  • Apache / OVH
  • Google Gemini API
  • InPost API

Contact

Get in touch

Fastest by email: kontakt@timberit.pl

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