Senior Data Scientist: Ads Optimization & Experimentation

Lever, Inc. in Canada seeks a Senior Data Scientist II - Ads Optimization to lead analytics, experimentation, and optimization for a large-scale advertising platform. You will partner with Product, Engineering, ML, Data Science, and Sales to translate research into production.

This role emphasizes causal inference, high-throughput systems, and mentoring teammates, while balancing advertiser outcomes, user experience, and revenue goals. Remote-first with provincial eligibility.