Staff Data Scientist

🗓️ Posted 2026-08-26 Canada Hybrid ICT

Company shared salary

NA

Market rate

8,333 CAD–12,500 CAD/mo (99,996 CAD–150,000 CAD/yr)

Based on similar roles (title + domain + location).

About the Company

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy.

Responsibilities

  • Own the full machine learning lifecycle-from problem framing and data exploration to modeling, deployment, and monitoring-for mission-critical initiatives.
  • Design and implement advanced ML and statistical models that improve product performance, operational efficiency, or customer insights.
  • Collaborate with engineers, product managers, and business stakeholders to define project scope, success metrics, and integration strategy.
  • Guide architectural decisions, set modeling standards, and champion best practices for experimentation, validation, and productionization.
  • Mentor other data scientists and raise the technical bar through design reviews, feedback, and sharing domain expertise.
  • Proactively identify areas where data science can create business value and lead cross-functional efforts to drive those opportunities forward.
  • Leverage cutting edge AI tools to enhance your development workflow, improve velocity, and help pioneer new approaches to building - contributing to a culture of innovation and productivity across the team.

Requirements

  • 5+ years of experience in data science with a proven track record of delivering production ML systems that drive measurable impact.
  • Deep knowledge of statistical modeling, machine learning (e.g., tree-based models, time series, deep learning), and model evaluation.
  • Experience working with real-world product data at scale and translating ambiguous problems into well-scoped ML solutions.
  • Experience with distributed data processing and training, real-time inference, and ML Ops frameworks
  • Prior experience mentoring other data scientists or acting as a tech lead.
  • Experience leading experimentation (e.g., A/B testing), causal inference, and real-time decision systems.
  • Proficiency in Python and SQL, and experience with ML frameworks (e.g., scikit-learn, PyTorch, TensorFlow).
  • Strong grasp of software engineering principles including modular design, version control, testing, and CI/CD.
  • Hands-on experience with cloud platforms (preferably AWS), including tools like SageMaker, Athena, Glue, DynamoDB, and Bedrock.
  • Excellent communication skills and the ability to influence both technical and non-technical stakeholders.
  • Strong business acumen with the ability to align technical solutions with company goals.
  • An advanced degree in Computer Science, Statistics, or a related STEM field is preferred.
  • Familiarity with MLOps tooling for monitoring, drift detection, retraining