I founded a SaaS, scaled it to 67,000 users and R$100k+ MRR, and sold it to Eduzz, a Brazilian creator-economy platform (~R$1.2B annual GMV). I never stopped writing code.

Today I'm a Staff Software Engineer there: the technical reference for a 9-person team, the cross-functional bridge between business and engineering. I ship with AI coding agents (Claude Code) and own the prompts, evals and review loop that get them to write staff-level code. What I sell is founder-level judgment on what ships. I've answered for payroll and for uptime, and learned the expensive way that the imperfect V1 that ships beats...