Hey, I'm Karol. Full‑Stack Developer.

Building
cool things.

Available for work

JavaScript · TypeScript · React | AI-Assisted Web Engineering

I focus on programming quality, clean code, and the seamless interaction between web technologies to build resilient applications.

Selected work

Projects that shipped.

A sample of things I've built to ensure production-ready stability.

Local-First Mobile App

Repwise

A production-ready, local-first React Native strength training app. Built with an Expo SQLite database and a custom natural language parsing engine. Backed by a robust suite of 120+ passing Jest tests to ensure offline reliability.

120+Jest tests
100%Offline
React Native TypeScript SQLite
Read more
Interactive Web Tribute

The Life of Death

A responsive, interactive web tribute showcasing strong command of semantic HTML, modern CSS, pacing, and frontend visual storytelling. Designed to prove that technical code must serve the user experience.

100Lighthouse
0Dependencies
HTML CSS JavaScript
Read more

Experience

My Journey.

  1. Freelance Web Developer (3 Years)

    Specialized in delivering professional web solutions for charitable organizations. Notably collaborated in a team to migrate a psychotherapist guild from a legacy CMS (SilverStripe) to WordPress, building custom features that directly increased patient referrals.

  2. Founders & Coders

    Graduate of the highly selective full-stack apprenticeship program, where I solidified my foundation in software engineering and team-driven development.

About me

Structuring clean applications.

In an era where AI tools can quickly generate boilerplate code, my focus is on what automation can't do on its own: structuring clean applications, defining clear data flows, and effectively orchestrating AI to accelerate development without sacrificing code quality.

A graduate of the Founders & Coders full-stack apprenticeship, I recently transitioned from 3 years of freelance development where I delivered professional, high-quality web solutions for charitable organizations.

Core Capabilities

  • Programming Quality: Writing maintainable, high-quality code with rigorous automated testing for production-ready stability.
  • Frontend Craftsmanship: Deep understanding of how CSS, plain JavaScript, and the DOM interact to create seamless user experiences.
  • System Integration: Connecting front-end and back-end systems, migrating legacy databases, and integrating modern AI APIs.
JavaScript TypeScript React Astro SQLite HTML/CSS
K
Karol Full-Stack Developer
3 years freelance
120+ tests written
AI prompts crafted
100 Lighthouse scores

Get in touch

Let's build
something great.

Whether you have a project in mind, want to chat about an opportunity, or just want to say hi — my inbox is open.

hello@karol.dev