Affirm

Affirm offers a transparent buy now, pay later service founded in 2012 by Max Levchin. No late fees or surprises, just a responsible way to pay over time for your favorite brands.

Diversified Financial Services

Financials

1K-5K (2552)

Founded 2012

91 open positions

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Machine Learning Engineer II

3 months ago

Canada

Full-time

Junior

Machine Learning Engineer

Software Development

Apache Airflow CatBoost Kubeflow LightGBM Machine Learning MLflow Python XGBoost

Apply Now

Affirm

Affirm offers a transparent buy now, pay later service founded in 2012 by Max Levchin. No late fees or surprises, just a responsible way to pay over time for your favorite brands.

Diversified Financial Services

1K-5K

Founded 2012

View All Jobs 91

Description

Develop AI systems that automate dispute and chargeback handling using structured evidence and business logic.
Build models that automate refunds and help return money to customers faster.
Build and maintain evidence extraction pipelines that process unstructured data using LLM-powered workflows.
Prototype new modeling ideas, run offline experiments, and promote the best approaches into production with appropriate risk controls.
Collaborate with Engineering, Servicing Operations, Product, and ML Platform to define requirements and evaluate tradeoffs.
Communicate results clearly to both technical and non-technical stakeholders.
Take models from idea to prototype to production and keep them healthy through measurement and monitoring.

Requirements

2+ years of experience as a machine learning engineer.
Strong Python skills and experience writing production-quality code.
Experience building and evaluating tabular classification models, preferably gradient-boosted decision trees such as LightGBM, XGBoost, or CatBoost.
Experience building applications with LLM APIs such as OpenAI or Anthropic, including structured extraction, prompt engineering, and orchestration frameworks like LangChain or LangGraph.
Familiarity with document and unstructured data processing, such as PDF/image extraction or text parsing.
Experience with ML lifecycle tooling for training orchestration, experimentation, and model monitoring, such as Kubeflow, Airflow, or MLflow.
Proficiency with AI-powered developer tools such as Claude Code or Cursor to accelerate iteration, debugging, and code quality.
Ability to break down simple business scenarios into solutions spanning multiple software components and implement them with clear, well-tested, extensible code.
Comfort navigating a large codebase, debugging other engineers' code, and providing code review feedback.
Strong verbal and written communication skills for effective collaboration with a global engineering team.

Benefits

Remote-first work environment with flexibility to work almost anywhere within Canada.
Base salary range of CAN $125,000 to $175,000 per year.
Monthly stipends for health, wellness, and tech spending.
100% subsidized medical, dental, and vision coverage for employees and dependents.
Flexible Spending Wallets for technology, food, lifestyle needs, and family-forming expenses.
Competitive vacation and holiday time off.
Employee stock purchase plan with shares offered at a discount.
Eligible for equity rewards through Affirm Holdings, Inc.

Interested in this position?

Apply directly on the company website

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