FinConnect: Building a standardized global connectivity platform for financial services

Nubank's engineering team describes FinConnect, an internal platform built to replace fragmented, country-specific network integrations with a unified global connectivity layer. Serving 131 million customers across Brazil, Mexico, and Colombia, the platform standardizes traffic management, security controls, and observability across all regions. Key outcomes include a 50% reduction in time to establish connectivity in new markets, 70% less custom engineering per region, 87% reduction in manual failover effort (from 40 minutes to under 5), and 50% faster mean time to identify incidents. The architecture uses Global Traffic Management via DNS with redundant circuits to eliminate single points of failure and enable automatic traffic rerouting during outages.