Skip to main content
WL
Open to opportunities

William Lee

@williamlee

I build AI-powered, real-time web platforms that improve advertiser and fintech user experiences.

United States
Message

I've built real-time, AI-powered web platforms at Google Ads and Robinhood, with a focus on low-latency experiences, production reliability, and scalable infrastructure.

At Google Ads, I led a real-time budget dashboard that reduced budget-update latency from five minutes to two seconds at the 99th percentile and scaled budget visibility to 750,000 concurrent WebSocket connections. I also built AI keyword recommendations and a RAG-based landing-page relevance scorer that helped reduce average CPC by 10%.

At Robinhood Crypto, I delivered real-time Coinbase price feeds, improved uptime from 96% to 99.5%, and reduced stale-price incidents. I enjoy mentoring engineers and building durable operational practices through observability, runbooks, on-call processes, and safe deployment workflows.

Experience

Work history, roles, and key accomplishments

GO
Current

Senior Software Engineer

Jan 2020 - Present (6 years 7 months)

Led design and delivery of real-time budget dashboard for Google Ads, reducing budget update latency from 5 minutes to 2 seconds at 99th percentile. Architected WebSocket-based platform scaling to 750,000 concurrent connections and reduced budget-overrun support tickets by 72%.

Education

Degrees, certifications, and relevant coursework

Cornell University logoCU

Cornell University

Bachelor's Degree, Computer Science

2011 - 2015

Bachelor's Degree in Computer Science from Cornell University, completed from 2011 to 2015.

Get matched with your dream remote job

Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up
Himalayas profile for an example user named Frankie Sullivan