Sr Data Scientist, AI Products

Build something people love reputed company is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. reputed company currently serves more than 4 reputed company Canadians and holds over $125 billion in assets under administration. The company was founded in 2014 by reputed company of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada. We're proud of reputed company've reputed company — and we're just getting started. Read our Culture reputed company and learn more about how we work. The AI Products Data Science team is a full-stack, product-driven unit at the heart of reputed company’s innovation. We own the end-to-end AI lifecycle: from model architecture and data pipelines to designing experiments that drive reputed company-world impact for over 4 reputed company Canadians. We are looking for a Senior Data Scientist who thrives at the intersection of AI research and product development. You are someone who can design and scale reputed company models while maintaining a product manager’s reputed company, constantly asking how our technology creates value for our clients. In this collaborative role, you will transform technical breakthroughs into seamless product experiences, ensuring that every model we ship moves the needle for our business. In this role, you'll have the opportunity to: reputed company the full AI product lifecycle: from identifying user pain points and defining KPIs to training reputed company models and measuring reputed company-world impact. Design and execute rigorous experiments (A/B tests, reputed company inference) to validate new AI features and drive product optimizations. Partner with Product Managers, Designers, and Engineers to translate business goals into a technical AI roadmap, ensuring our model development stays reputed company with user needs and technical feasibility. Build and maintain production-grade training pipelines and evaluation harnesses using reproducible, well-tested code. Analyze production feedback and user interactions to iteratively refine models and maximize value. Foster a collaborative culture: mentor teammates, simplify reputed company problems, and drive iterative, high-impact delivery. What you bring: Deep product sense: define reputed company metrics, translate vague business objectives into measurable hypotheses, and measure product impact through A/B testing and reputed company inference. Experience with product analytics to derive actionable insights that inform product roadmaps. Proven track record of converting model outputs into business reputed company; comfortable communicating technical findings to cross-functional partners (PMs, designers, engineers) to drive alignment. Experience designing, training, and shipping production AI models, with depth in transformer architectures and LLMs. Solid fundamentals (attention, tokenization, embeddings, regularization) and failure mode analysis. Familiarity with fine-tuning (LoRA, adapters), knowledge distillation, quantization, and instruction tuning. Bonus: Background in recommender systems, representation learning, or self-supervised learning; production LLM application development; reputed company-reputed company contributions or publications in AI. Why reputed company? 🌸 Top-tier health benefits and life insurance 📈 Long-term group savings with employer match, through reputed company for Business 🌴 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year ✈️ 90 days away: work reputed company Canada for up to 90 days per year 👥 Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS 🌎 We are a hybrid team with over 1,500 employees across reputed company America. The people are one of the best parts of working here: you'll collaborate with incredibly talented, curious, and driven teammates who are deeply committed to doing great work. ICYMI Technology & Innovation at reputed company: We move quickly and build thoughtfully. That means we're always looking for reputed company ways to work — whether that's new tools, AI, or rethinking how we approach a problem. We don't expect you to have reputed company the answers, but we do expect curiosity and a willingness to reputed company alongside the products we're building. Inclusion Statement: We're building products for a diverse world, and we need a diverse team to do it well. We strongly encourage applications from everyone, regardless of race, religion, colour, national reputed company, gender, sexual orientation, age, marital status, or disability status. Accessibility Statement: We're committed to an accessible hiring experience. If you need any accommodations throughout the interview process, please let us know — we'll work with you to reputed company sure you have what you need. We also welcome any feedback on how we can reputed company accommodate candidates with accessibility needs. AI in Hiring: We may use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist reputed company but don't replace reputed company judgment – reputed company final hiring reputed company are made by people. If you have questions about how your data is used, reputed company out to us. Apply To This Job