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Senior Applied ML/AI Scientist - Search

Kitchener-Waterloo, ON💼 Full-time💰 $211,000–$211,000🗓 2026-07-31 → 2026-09-26

Core

Design and productionize next-generation search ranking algorithms and natural-language discovery systems using deep learning, LLMs, and graph neural networks to personalize product discovery for independent retailers.

Role type

Senior Applied ML/AI Scientist (Search & Recommendation)

Builds

Real-time search ranking models, multimodal user profiling systems, and intelligent search agents for an e-commerce wholesale platform.

Domain

E-commerce / Search & Recommendation / Deep Learning

Deliverable

production ML models

Required skills

Deep learning, Transformer-based sequential modeling, Graph neural networks, LLM application development, User modeling, Reinforcement learning, A/B testing, Feature engineering, MLOps, Python, PyTorch, Spark

Preferred skills

Open-source ML contributions, Peer-reviewed publications, E-commerce marketplace search experience, AI coding tools proficiency, Kotlin

Technologies

PyTorch, Spark, LLMs, Graph Neural Networks

Responsibilities

Build next-generation search ranking algorithms integrating deep learning advances; Leverage LLMs to extract multimodal signals for user profiling; Partner with teams to experiment and improve ML models; Design and productionize natural-language search and discovery systems; Share best practices in deep learning and MLOps through code reviews and guidance.

Seniority

Senior, hands-on IC

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