Parity's Head of Product Engineering @KarimJDDA doesn’t just build systems, he stress-tests them, and in his recent chat with @TheKusamarian, he summed it up perfectly: “You don’t understand a system until you’ve pushed it to the edge.” From breaking assumptions to improving reliability, he’s one of the engineers turning the Second Age of @Polkadot from architecture into reality. Relentless curiosity. Zero hype. Real engineering.