William Cheng

I am a Staff Software Engineer with deep experience building scalable, cloud-native communication and marketplace systems. I have led platform initiatives that improved call reliability, routing accuracy, and analytics for high-volume services.

At Twilio I designed and implemented real-time quality scoring, fallback routing, and high-throughput microservices using Java, Go, and cloud infrastructure, while integrating AI inference and streaming pipelines to boost service reliability.

Previously at Airbnb I contributed across frontend and backend stacks, helped scale booking and listing platforms, and applied machine learning for ranking, personalization, and fraud detection to improve conversion and user experience.

I mentor engineers, collaborate across product and operations, and emphasize observability, security, and automated CI/CD to deliver reliable, production-grade systems that meet compliance and SLA goals.