Thiago Finch
Senior Software Engineer · São Paulo, Brazil
I build the infrastructure that makes financial services feel instant. Six years across Brazil's two largest fintech companies, working at the intersection of frontend architecture and distributed systems.
Senior Software Engineer
Leading frontend architecture for Nubank's credit card management platform, serving 14 million active users across iOS, Android, and web. Spearheaded the migration from a legacy monolith to a React-based microfrontend system, reducing time-to-deploy by 67%.
- Architected a real-time transaction notification system processing 2.3M events/day using WebSockets and Redis Pub/Sub
- Reduced bundle size by 42% through aggressive code-splitting and tree-shaking strategies
- Mentored a team of 4 junior engineers, establishing code review practices and documentation standards
- Built internal design system adopted by 6 product squads
Software Engineer
Built and maintained merchant-facing payment processing tools used by over 80,000 small businesses across Brazil. Worked across the full stack to deliver critical checkout flows, fraud detection dashboards, and the flagship POS reconciliation interface.
- Developed a real-time fraud detection dashboard that flagged 18% more fraudulent transactions within 3 months of launch
- Rebuilt the merchant onboarding flow, reducing drop-off by 31% through progressive disclosure and inline validation
- Integrated Pix (Brazil's instant payment system) into Stone's payment gateway on its public launch day in November 2020
- Contributed to open-source internal tooling for end-to-end payment testing
Universidade de São Paulo
Graduated with distinction from Brazil's most prestigious public university. Final thesis focused on consensus algorithms in distributed ledger systems, supervised by Prof. Dr. Ana Lúcia Bazzan.
Served as president of the university's Software Engineering Student Chapter for two years, organizing hackathons and inviting industry professionals for technical talks.