Welcome, I'm Krzysztof

Frontend engineer building internal tooling for dev teams

Writing about frontend architecture, developer experience, and making technical decisions, that actually serve the business.

2026-02-14blog post

API surface challenges on a shared platform

War stories from a shared platform library, Hyrum's Law, and the politics of scaling a core npm package in a big organization.

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2025-10-27blog post

How we migrated 30+ apps from Webpack to RSBuild by introducing the internal scripts package

When you have dozens of applications, independent teams, and module federation requirements, migration isn't just a technical challenge - it's an organizational one. This is how we used a scripts package to migrate from Webpack to RSBuild without coordinating developers

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2025-08-23blog post

Design System Pitfalls: Lessons from Integrating at Scale

In large organizations, design systems promise consistency and lower cost-but they often fall into predictable traps. Here’s what to watch and measure.

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2024-12-22dev-bite

Vitest timing breakdown

Breakdown of each step of duration printed out after running the Vitest tests. Including some hints on how to improve each of the metrics

2024-08-03dev-bite

How to Measure ESLint Execution Time

Find out how to check which ESLint rules takes a lot of time to scan the project