How To Build PayPal From Scratch - System Design Series

Join us for a deep dive into the architecture behind modern digital payment platforms—systems designed to process millions of secure transactions across borders with real-time responsiveness and fraud protection. Whether you're building your own fintech app or curious about the engineering behind services like PayPal, this event will equip you with the architectural insights to design scalable, secure, and globally accessible payment solutions.

Topics we will cover:

Sending & Receiving Money (transaction engine / multi-method payments / ledger system / user wallets / real-time notifications)

Multi-Currency & Cross-Border Payments (currency conversion service / multi-currency wallets / compliance & localization / international transaction routing)

Fraud Detection & Security (real-time monitoring / ML anomaly detection / risk scoring / encryption / 2FA)

Agenda

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Hosted By

Hana (Dope'rah) Hassan, GDG Organizer

Oleksandr Levinskyi, GDG Organizer

Sanjay Sekar Samuel, Co-organizer

Udesh Cooray,

Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-waterloo-presents-how-to-build-paypal-from-scratch-system-design-series/.