O11ycast Ep. #86, 12 Years and 100 Million Customers with Amarilis Campos of Nubank
Oct 29, 2025
Amarilis Campos, a product and engineering leader at Nubank, shares insights on scaling Brazil’s largest digital bank to over 100 million customers. She discusses fostering a culture of ownership and psychological safety, which empowers teams to make decisions. Amarilis explains how moving from metrics and logs to Honeycomb tracing enhances observability, allowing greater autonomy and efficiency. The conversation includes how observability tools track customer journeys and the importance of performance, AI, and tailored telemetry in meeting diverse business needs.
AI Snips
Chapters
Transcript
Episode notes
Autonomy Scales Faster Than Central Control
- Nubank scales by giving teams high autonomy and using microservices to isolate work.
- That ownership culture enabled growth to 100+ million customers in 12 years.
Tracing Reveals The Full Transaction Story
- Metrics and logs showed symptoms but lacked end-to-end context for complex flows.
- Tracing with Honeycomb revealed full transaction journeys and surfaced root-cause bottlenecks quickly.
Users Praised Honeycomb During Calls
- Amarilis described talking to internal users who found Honeycomb made bottlenecks obvious.
- One user said tracing queries were visual and fast compared to logs.