• Own the technical architecture — backend, frontend, infrastructure, and AI integration • Write code daily — build the critical systems yourself • Make stack and design decisions that will shape the product for years • Set the standard for code quality, testing, and engineering discipline • Integrate LLMs and AI workflows deeply into the platform • Work directly with founders on product direction and technical roadmap • Create clarity and structure in an environment that doesn't have perfect specs • Mentor and guide the other developers technically