Summary
Sahn Lam is a seasoned software engineer and entrepreneur with 13 years of experience designing and operating large-scale distributed systems, now cofounder and author at ByteByteGo. He co-wrote the best-selling system design interview series, runs a 500k+ subscriber YouTube channel and newsletter, and translates deep technical concepts into accessible learning products. Previously a staff engineer at Discord and a senior architect across roles at Ubiquity6 and Zynga, he has led cross-functional teams spanning frontend, backend, mobile, CI/CD, and machine learning infrastructure. His track record includes rebuilding high-throughput analytics and messaging pipelines, slashing CI times dramatically, and shipping production networking and social systems for consumer-scale products. Based in the San Francisco Bay Area and trained in EECS at UC Berkeley, he combines hands-on debugging of low-level performance issues with product-focused system design and developer tooling. An uncommon strength is his ability to move fluidly between shipping mission-critical ops fixes and creating educational content that scales engineering knowledge.
13 years of coding experience
14 years of employment as a software developer
BS EECS, BS EECS at University of California, Berkeley