ENNL

Writing

Notes on things I built and what I learned from them.

  1. 2 min read

    Crypto-agility in three pull requests

    What I learned turning post-quantum scan findings into changes that maintainers of public-sector code can actually merge.

    • Post-quantum
    • Security
    • Open source

  2. 2 min read

    Writing E2E tests with Playwright and MCP

    How I used the Playwright MCP server to let an AI assistant drive a real browser while writing end-to-end tests for a workflow-heavy Angular app.

    • Testing
    • Playwright
    • AI tooling

  3. 2 min read

    How this portfolio works

    A static SvelteKit site where every chart and number is calculated from one data file, in two languages, without cookies.

    • SvelteKit
    • Performance
    • Accessibility
joey.oosenbrug@gmail.com