Building a Recommendation Engine Without Slowing Delivery
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Talk
Building a Recommendation Engine Without Slowing Delivery
12 May, 10:25 am - 11:00 am (America/New_York) - Main Stage
12 May, 14:25 - 15:00 (UTC)
Continuous Delivery
UXDX USA 2026
This session follows how Katerina is leading the shift from rule based curation to a machine learning driven recommendation platform across the home feed and vertical video feed. She shares how the team moved out of a limbo state, shipped simple ranking models fast, and used metrics and offline LLM support to guide smarter long term platform bets.
Outcomes:
- Identify when rule based personalization has peaked and where to introduce recommendations first
- Design an incremental ML roadmap that delivers quick wins while a shared platform is still being built
- Balance heuristics, classic ML and LLM assisted training to improve feeds without bloating production
- Align engineers, product and leadership around KPIs so experiments, platform work and delivery stay in sync

Katerina Zanos, Principal Machine Learning Engineer,The Walt Disney Company