Principal Machine Learning Scientist
Core
Technical anchor for the core discovery engine, leading ML strategy and execution for search, retrieval, ranking, and recommendation systems to power user travel itinerary discovery.
Role type
Principal Machine Learning Scientist (Search & Recommendation)
Builds
Production-grade multi-objective ranking and recommendation systems for travel itineraries
Domain
Travel Technology / E-commerce
Deliverable
production ML models
Required skills
Multi-Task Learning (MTL), Multi-gate Mixture-of-Experts (MMoE), Sequential Recommendation, Representation Learning, Graph Neural Networks (GNNs), Agentic AI, LLM-driven reasoning, Distributed Computing (Spark, Ray), Cloud Infrastructure (AWS/GCP)
Preferred skills
Experience in E-commerce or Two-Sided Marketplaces, Academic publications in top-tier AI/IR conferences
Technologies
Python, TensorFlow, Pytorch, Spark, Ray, AWS, GCP
Responsibilities
Drive technical roadmap for Search, Retrieval, Ranking, and Recommendation systems; Design, prototype, and scale next-generation recommendation and ranking models; Oversee deployment of low-latency, high-throughput retrieval and ranking pipelines; Mentor and coach senior and mid-level ML scientists
Seniority
Principal, hands-on IC with strategy & mentorship