Top Tech Jobs & Startup Jobs in Toronto

Graduate research internship to own end-to-end research on Customer World Models and proactive intelligence: design representations, develop methods (foundation models, RL, causal reasoning, agentic systems), run experiments, publish, and help ship ML systems that anticipate and act on customer needs.

The Staff Software Engineer will lead technical strategies for the Cash App Banking team, overseeing architectural decisions, mentoring engineers, and developing financial products that improve customer banking experiences.

Lead software design and development for Cash App Banking features, collaborating with teams to innovate financial products and improve system architecture.

Lead strategy and execution for AI-powered risk automation products. Identify automation opportunities, define product requirements, partner with ML/data/engineering/design, run experiments, set metrics for accuracy, safety, and reliability, and drive cross-functional launches to improve decision quality and operational efficiency.

Looking for a Software Engineer to build financial products and tooling for Cash App's Lending team, ensuring quality and compliance while collaborating across domains.

The Senior Technical Account Manager will act as a technical partner to Cash App Pay and Afterpay merchants, optimizing integrations and ensuring growth through collaboration and technical solutions.

Senior individual contributor building and maintaining underwriting and credit decisioning ML systems for Cash App Borrow and Afterpay. Responsibilities include feature engineering, model training, calibration, experimentation, deployment, monitoring, and portfolio-level analysis. Collaborate with cross-functional teams to align models with business and regulatory goals and develop AI-native engineering workflows and governance for reliable, auditable model development.

Lead the sponsor bank partnership for Cash App Card; ensure compliance, manage relationships, and optimize program execution for financial products.

Senior individual-contributor program manager owning issuer and processor partner relationships end-to-end. Drive partner onboarding, technical integration, BIN setup, compliance, SLAs, incident response, and launch readiness while coordinating Product, Engineering, Legal, Compliance, and Operations to deliver scalable card experiences.

Lead high-severity incident responses across Block, coordinating cross-functional teams to contain, remediate, document, and report incidents, and drive post-incident reviews to improve preparedness and resilience.