Are you passionate about ML model quality and building trust in AI systems?

If so, this might be the role for you! We're looking for a Data Scientist to join our growing ML & AI practice. You will play a key role in ensuring the reliability, accuracy, and performance of our machine learning models, from evaluation framework design to ongoing production monitoring. If you're someone who geeks out over loss functions, loves writing rigorous evals, and takes pride in knowing a model truly works before it ships, we want to hear from you!

The role:

Reporting to the Director, Data Science, the Data Scientist will be a core contributor to the quality and reliability of our ML and AI systems. Your primary focus will be ML model validation and monitoring, designing and executing MCP (Model Context Protocol) evaluations, and building regression test suites that give the team confidence at every stage of the model lifecycle. You will work closely with senior data scientists, MLOps, and product teams to keep our models honest and our business protected.

The Data Scientist will:

• Design, implement, and maintain ML model validation frameworks, including custom evaluation metrics, loss functions, and statistical tests, to ensure model quality before and after deployment.
• Build and own regression test suites for ML and LLM models, catching performance regressions and unexpected behaviour across model updates and data drift scenarios.
• Develop and execute MCP evaluations, systematically assessing model capabilities, edge cases, and failure modes across relevant business contexts.
• Monitor models in production using statistical process control, drift detection, and alerting pipelines; proactively surface issues before they impact customers.
• Collaborate with senior data scientists to contribute to the design and refinement of ML model architectures, offering feedback grounded in validation results.
• Document evaluation methodologies, test results, and monitoring runbooks clearly enough that stakeholders across technical and business teams can understand model health.
• Stay current with advancements in LLM evaluation techniques, AI safety, and model observability, and apply emerging best practices to our workflows.
• Communicate findings clearly and concisely to stakeholders, translating model performance signals into actionable recommendations.

To be successful, you should have:

• Industry experience in data science, machine learning, or a closely related quantitative field.
• Proficiency in Python and the core DS stack: Pandas, Scikit-Learn, XGBoost, and at least one deep learning framework (PyTorch or TensorFlow).
• Solid grasp of statistical concepts underpinning model evaluation: bias-variance tradeoff, calibration, confidence intervals, A/B testing, and data drift.
• Experience with LLM evaluation frameworks (e.g. RAGAS, Eleuther AI Eval Harness, or custom LLM eval pipelines).
• Hands-on experience designing custom evaluation metrics; you've gone beyond off-the-shelf metrics when the problem demanded it.
• Strong understanding of ML and LLM model architectures - you can reason about how a model is built and why it behaves the way it does.
• High proficiency in SQL for data exploration, feature validation, and debugging model inputs.
• Exceptional attention to detail - you treat model validation with the same rigour as software QA.
• Strong written and verbal communication skills; comfortable presenting findings to both technical peers and non-technical stakeholders.

It would be nice if you had:

• Experience building model evaluation or monitoring solutions within a Snowflake environment, e.g. logging predictions and ground truth to Snowflake tables, computing eval metrics via Snowpark, or building monitoring dashboards on top of Snowflake data.
• Familiarity with Snowpark (Python) for running data transformations and ML workflows directly within Snowflake.
• Exposure to model regression testing patterns in a CI/CD context (e.g. running evals on every PR).
• Familiarity with prompt engineering and evaluation strategies for LLM-powered features.
• Experience working in a SaaS environment and an appreciation for how model quality translates to customer impact.

Location:

We believe great collaboration is intentional, and sometimes that means coming together in person to build, brainstorm, and connect. To support this, the role is open to candidates based in one of our hub cities: Edmonton, Toronto, Vancouver, or Kitchener-Waterloo.

Compensation:

At Jobber, we believe that compensation should be transparent, fair, and reflective of your experience and growth. This role has a minimum annual salary of $125,800 CAD, a midpoint of $147,900 CAD, and a maximum of $170,100 CAD, designed to reflect progression from strong foundational skills to deep expertise in ML validation and evaluation.

We design our compensation to reflect each new hire's skills, experience, and the complexity of the role, ensuring a fair and competitive salary. Our range is intentionally broad to support growth and long-term impact, with fully established hires typically starting around the midpoint.

Base salary is just one part of a total compensation package that includes equity rewards, annual stipends for health and wellness, retirement savings matching, and an extended health package with fully paid premiums for body and mind. Your professional growth matters to us too - you'll have access to a dedicated talent development program that includes career coaching and opportunities for career development.

We believe in transparency and open conversations about compensation. If you have any questions about our approach, we're happy to discuss them throughout the hiring process!

What you can expect from Jobber:

• A total compensation package that includes an extended health benefits package with fully paid premiums for both body and mind, matching in RRSP, TFSA or FHSA, and stock options.
• A dedicated Talent Development team and access to coaching, learning, and leadership programs to help you grow your career, reach your goals, and unlock your full potential.
• A unique opportunity to build, grow, and leave your impact on a $400-billion industry that has no dominant player...yet.
• To work with a group of people who are humble, supportive, and give a sh*t about our customers.