Senior Manager, Data Science, Walmart Global Tech (2021–Present)
Led neural ranking and semantic retrieval improvements for query autocomplete using rigorous offline evaluation and online A/B testing. Designed and operationalized experimental metrics and frameworks (e.g., NDCG, MRR, engagement) to validate the impact of model changes. Prioritized PoC-first validation to ensure utility before scaling investment in applied ML solutions. • Improved autocomplete success rates via offline evaluation and online A/B testing. • Established experimentation frameworks and metrics design (NDCG, MRR, engagement). • Drove PoC-first strategy to prove ML utility before production scaling. • Led applied science and engineering roadmap for discovery platforms.