Lead Machine Learning Engineer - Search & Recommendations
Upwork
21 days ago
Toronto, Canada
Mid Level / Senior / Staff+
H1B Sponsor
Responsibilities
- Design and build personalized memory systems for Search and Recommendations.
- Develop user-, session-, and interaction-level memory representations.
- Integrate memory-driven signals into retrieval and ranking pipelines.
- Model temporal dynamics of user behavior for personalization features.
- Train and evaluate memory-aware ranking and personalization models.
- Partner with search teams to support context-aware query understanding.
- Productionize memory-driven ML systems focusing on latency and scalability.
- Provide technical leadership through design reviews and mentorship.
Requirements
- Experience building and deploying search or recommendation systems in production.
- Strong foundation in retrieval and ranking systems.
- Practical experience modeling personalization and behavioral memory.
- Solid machine learning engineering skills across the full lifecycle.
- Adaptive approach to integrating AI tools into workflows.
- Comfort operating in ambiguity and defining open-ended problems.
- Bonus experience in applied research or publications in relevant fields.
Categories
AI & MLData Science