Steven B.
Ads Quality - Staff Machine Learning Engineer Science @Whatnot
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WORK HISTORY
Ads Quality - Staff Machine Learning Engineer Science @Whatnot
San Francisco, CA, US
Built and scaled a real-time ads business from zero to ~$100M in annual revenue, owning core decisioning systems from auction design, ranking, bidding, machine learning / AI through to serving.Designed and operated auction, ranking, bidding, pacing, and recommendation systems, balancing revenue, advertiser ROI, user experience, and marketplace health.Set technical direction on ads ML strategy, including when to apply learning-based approaches vs rules or heuristics under latency and reliability constraints.Owned backend APIs and real-time ad serving infra structure, integrating ranking, budgets, and delivery guarantees in production systems.Hands-on with production ML and data pipelines in Python, including experimentation, model iteration, and online monitoring in a live marketplace.
EDUCATION
Trinity College Dublin
MSc Computer Science, Cars and Explosions
Prifysgol Aberystwyth University
BEng, Software Engineering
SKILLS
ABOUT STEVEN B.
Engineering Leader | AI, Machine Learning & Ads, Search and Recommendation Systems
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