

cto summit
BEYOND THE HYPE
Sérgio Laranjeira
Doctolib - VP Engineering

I'm passionate about engineering management, leadership and software delivery. I strive to make a meaningful impact on organizations by delivering exceptional experiences to both internal and external customers. In parallel, I'm deeply committed to the cause of Diversity and Inclusion (D&I), I believe that fostering it is not just a moral imperative but also a strategic advantage, and I actively work to create inclusive workplaces, promote D&I at various events, and drive recruitment activities that promote diversity. I dedicate my time working with people, building a culture where individuals can be themselves and bringing great results to the business.
Smaller teams, bigger systems
The problem with small teams and AI isn't how much code you produce, it's whether a small team can still understand what it owns.
- AI lets a handful of people build something huge, but building it and reasoning about it at 3am during an incident are very different things.
- The gap between ""we shipped it"" and ""we understand it"" is where the risk lives.
- Fewer people holding more critical knowledge means a nasty bus factor and a real resilience risk.
- Shrink teams without rethinking architecture and the org stops matching the system.
Takeaway: complexity, not headcount, is the real limit, and AI grows complexity faster than a small team can absorb it. Comprehension and operability become bottleneck. Ownership and on-call don't shrink just because the team did, so redesign the support model before you cut people.
