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Welcome to my blog! I'm a seasoned Software Engineer with over 20 years of experience in the tech industry. My passion lies in writing about the latest advancements in technology and sharing my insights through public speaking. I envision a world where technology is accessible to everyone and understood as deeply as by those who create it. Join me on this journey as we explore the fascinating world of technology together.
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Harness engineering: the model is the smallest part
A 5-part series — Part 4/5 – Harness engineering When the Claude Code source leaked in late March 2026, people could finally measure something practitioners had suspected without proof: across roughly 512,000 lines of TypeScript, the model interaction itself is a tiny fraction. Everything else, the vast majority, is the harness. That sums up the…
Context engineering: the window is a scarce resource
A 5-part series — Part 3/5 Here’s the most counterintuitive idea in the whole series: giving a model more information can make it worse. It’s tempting to picture the context window as a big bag where you cram everything that might help. In practice it’s a budget. Every token you add spends another, and past…
Prompt engineering: what still holds up in 2026
A 5-part series — Part 2/5 We buried prompt engineering a little too fast. The discipline isn’t dead, it’s been demoted. It now sits at the innermost layer of the diagram from Part 1: how you phrase a request, inside a single call. That’s small. It’s also the first place everything can go wrong. In…
Prompt, context, harness: the three ages of LLM engineering
A 5-part series — Part 1/5 Three years ago, knowing how to “talk” to a model was a rare and slightly magical skill. People traded screenshots of prompts that worked and passed around phrasings like cooking recipes. Andrej Karpathy summed up the era in a line that stuck: the hottest new programming language was English.…
Prompt, Context, Harness : les trois âges de l’ingénierie des LLM
Série en 5 épisodes — Épisode 1/5 Il y a trois ans, savoir « parler » à un modèle était une compétence rare et un peu magique. On s’échangeait des captures d’écran de prompts qui marchaient, on se refilait des tournures comme des recettes de cuisine. Andrej Karpathy a résumé l’époque d’une formule devenue culte…