Building payments and billing infrastructure for Meta's ads platform — from payment retry mechanisms that recovered $1.45M annually to automated tax compliance systems processing 2M+ e-invoices monthly

At Lizza, I led the back-end team in implementing a hexagonal architecture in Go for the second version of the app's infrastructure. Additionally, I successfully migrated a NoSQL database to PostgreSQL, resulting in a 40% reduction in average response times and improved overall application performance.

Developed and optimized key features of the platform's V2 frontend using React and JavaScript, including a multi-step KYC onboarding flow compliant with Mexico's CNBV regulations

12-week internship where I contributed to the development of reusable UI components using React Native, enabling product teams to ship high-quality products faster with a consistent user experience.