Top Tech Jobs & Startup Jobs in Toronto

Design, build, and operate production ML decision systems to detect and prevent payment fraud, account takeover, scams, and other abuse. Integrate diverse signals into low-latency serving and batch scoring, own feature pipelines and model lifecycle, develop AI-assisted triage and feedback loops, and partner cross-functionally to balance fraud reduction with legitimate customer access.

Design, build, and operate production ML systems that generate trusted signals for ranking, retrieval, recommendations, propensity/churn/LTV, and next-best-action decisioning. Define signal/data contracts, own feature and candidate generation through serving, experimentation, monitoring, and feedback loops, and evaluate long-term business impact, trust, fairness, and compliance. Partner across product, data, modeling, risk, and compliance and apply AI/agents to accelerate engineering and operations.

The Senior Solutions Engineer will collaborate with Sales and Account Management to support seller integrations, advise on suitable Square solutions, and offer ongoing support to strategic sellers and partners.

As a Product Manager for GTM Automation at Block, you will design and oversee AI products that enhance workflows, partnering with engineering and data teams to optimize automation in operations and customer interactions.

The Partner Development Lead will manage and grow strategic partnerships for Cash App and Afterpay, develop growth strategies, and lead commercialization of payment products, requiring strong relationship-building and negotiation skills.