Every founder hiring a developer in 2026 faces the same problem: every candidate says they work with AI. The CV says "built AI-powered features." The portfolio shows a product that works. The demo looks impressive. And yet - three months after the hire - something breaks. The AI API bill arrives and nobody knows why it's that high. A feature needs changing and nobody can explain the architecture. The CTO asks a question in a team meeting and the developer reaches for ChatGPT