PayPal
Fintech
PayPal

Global payments platform processing $1.5T+ annually with real-time fraud detection and GraphQL federation

Employees:25,000+
Revenue:$30B+
Founded:1998
HQ:San Jose, CA
Ticker:PYPL
Key Metrics
Users400M+ active accounts
Requests10K+ transactions/sec
Uptime99.99%
Annual Volume$1.5T+
Transactions/Day40M+
Fraud Detection99%+
Tech Stack
React
Java
Spring
Oracle
Private Cloud
Apache Kafka
Custom ML
System Architecture

GraphQL Federation with ML Fraud Detection

PayPal Architecture

Enterprise-Scale Payments Platform

Payment Channels

Checkout
React
Venmo
P2P
Braintree
Merchant

API Gateway

GraphQL Federation
Unified API
REST APIs
Legacy

Core Services

Payment Service
Java, Spring
Risk Engine
ML, Real-time
Wallet Service
Balance

Data Layer

Oracle
Core Financial
Kafka
Event Stream
Ledger
Double-Entry

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Sources

https://medium.com/paypal-techhttps://github.com/paypal

Last updated: 2024-12-01