Sr Data Scientist, AI Products
Core
Design and scale complex AI models (transformers, LLMs) to drive real-world impact for Wealthsimple's 4 million Canadian users across investing, trading, and tax products.
Role type
Senior IC Data Scientist (AI Products)
Builds
Production-grade AI models, training pipelines, and evaluation harnesses for Wealthsimple's financial products.
Domain
Financial Technology (FinTech) + Large Language Models (LLMs) + Transformer Architectures
Deliverable
production ML models
Required skills
Transformer architectures, LLMs, A/B testing, causal inference, product analytics, model fine-tuning (LoRA, adapters), knowledge distillation, quantization, instruction tuning, failure mode analysis
Preferred skills
Recommender systems, representation learning, self-supervised learning, open-source contributions, AI publications
Technologies
LoRA, adapters, quantization, instruction tuning
Responsibilities
Lead the full AI product lifecycle from pain point identification to model training and impact measurement; Design and execute rigorous experiments (A/B tests, causal inference) to validate features; Partner with PMs, Designers, and Engineers to align model development with business goals; Build and maintain reproducible training pipelines and evaluation harnesses; Analyze production feedback to iteratively refine models; Mentor teammates and drive iterative delivery.
Seniority
Senior, hands-on IC
