Learnings ... old fashioned Blog (Page 1)

Lessons from real projects: code review when AI writes the code, contract-first API testing and a year as an engineering lead.

AI cheat sheet for beginners: the words and where to start

Tokens, context, agents, harnesses. Let’s make sense of the words, try a first task, and keep a printable cheat sheet beside your keyboard.

Categories: Cheat Sheet Spickzettel Tech Trends Learnings

Stop reading every line of code

AI made code cheap. Trust is not. The old review ritual still pretends a careful human can keep up by reading harder. Then a green test suite lies to you, a 32k-line PR asks for a blessing, and a professional-looking diff hides the real risk. Quality was never living in the scroll bar. The real question is why the system should trust the change at all when attention runs out.

Categories: PHP Shopware 6 Tech Trends Learnings

Contract-first API testing: How your OpenAPI spec becomes the test suite

Most teams treat OpenAPI as documentation. This experiment treats it as an executable contract. Every endpoint, every response, every error is validated against the spec automatically. This post explains the testing concept, the metadata system, and the CI pipeline behind it.

Categories: PHP Learnings Tech Trends

2025: What a year as an engineering lead

A year of challenges, mistakes, and growth. From leading a new framework team formed from four different teams, to people leaving, to finding our identity through an on-site workshop. This is my story of 2025 as an engineering lead at shopware AG, including the hard-learned lessons about team building, roadmap ownership, and what really matters in engineering leadership.

Categories: Learnings Leadership