Work

Won an innovation contest with a monetization system for Twitter micro-influencers. Companies paid for campaigns, users earned based on reach. Featured in Folha de São Paulo, The Next Web, Startupi. The model was a decade ahead. The project died three years later. Not because of technology. Because I didn't know how to sell. Most expensive lesson I ever had: building product is not building business. Good products don't sell themselves.

Habit tracking app. Tech team with 5 developers and product spinning for 6 months on a bloated scope from premium UX consultants. I redesigned the MVP, cut to what mattered, kept 1 dev. App hit the stores in 2 months. The startup shut down a year later as a business decision, but it tested the thesis fast instead of burning more runway.

Joint venture between Votorantim, Gerdau, and Tigre.

First time: consultancy with contract expiring in 15 days, 2 apps to replace. I built both apps with 2 devs already on the team. We delivered on time. With the successful delivery, I earned the CTO's trust and designed a gradual migration plan. 18 months changing the tire while the car was moving: shipping new features while migrating legacy. The team won the best delivery award that year.

Second time: years later, company 10x bigger, I came back to lead the platform team. 10 to 18 staff engineers. I adjusted the team and in one quarter shipped the SSO that had been stuck for over 6 months. Then came feature flags for the entire company, enabling A/B testing, product experiments, and gradual rollouts. The CEO mentioned it at the annual meeting. We also shipped the design system, a long-held dream since my first time there. Direct impact on 100+ devs. The company hit R$10 billion GMV that year.

CTO for one year. Mapped a 20-year legacy no one fully understood. The mapping made clear what to tackle first, the risks, and the deprecated projects. Improved infra, security, and scale, hands on. Helped improve the development process. Shipped 4 new projects (2 solo), including the SSO to unify hundreds of thousands of users. The SSO had been tried before and deprioritized. I showed the value, designed the solution, and shipped it.

Founded with my wife to teach devs how to think, not just use frameworks. 70k devs reached. 700+ students graduated. Student who went from zero to first job at R$7k/month. Company that opened a position just to hire one of ours. Dev who left 15 years in logistics for tech, earning more than ever. One company hired us to train Python devs internally. We brought in a specialist instructor, designed the program, delivered job-ready devs.