RemoteLeaf Logo
Log in Sign up

Senior Machine Learning Engineer (Fraud ML)

2 months, 1 week ago
Canada
Full-time
Senior
Machine Learning Engineer
Software Development
Apache Airflow Apache Spark CatBoost Kubeflow LightGBM Machine Learning MLflow Python PyTorch XGBoost
Apply Now
Affirm

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 139

Description

  • Lead development of new fraud prediction models using tabular, graph, and behavioral data.
  • Build and scale feature pipelines and training datasets from proprietary and third-party signals.
  • Prototype new modeling ideas and features, run offline experiments, and promote the best approaches into production with appropriate risk controls.
  • Productionize models by integrating them into batch and/or real-time decision systems.
  • Improve model reliability, latency, and operational robustness.
  • Instrument and monitor model and data health as fraud patterns evolve.
  • Define retraining and backtesting workflows to keep models effective over time.
  • Identify and implement foundational improvements to the team’s model-building process.
  • Collaborate with Engineering, Fraud Analytics, Product, and ML Platform to define requirements, evaluate tradeoffs, and communicate results.

Requirements

  • 6+ years of experience researching, training, tuning, and launching ML models at scale; a relevant PhD may count for up to 2 years of experience.
  • Track record of delivering high-impact machine learning models in a low-latency live setting.
  • Strong Python skills and experience writing production-quality code.
  • Experience building and evaluating tabular classification models, preferably with gradient-boosted decision trees such as LightGBM, XGBoost, or CatBoost.
  • Experience with a deep learning framework, preferably PyTorch.
  • Experience with distributed data processing or parallel compute frameworks, preferably Spark; Ray or Dask is also relevant.
  • Experience with ML lifecycle tooling for orchestration, experimentation, and model monitoring, such as Kubeflow, Airflow, or MLflow.
  • Proficiency with AI-powered developer tools such as Claude Code or Cursor to speed iteration, debugging, and code quality.
  • Ability to turn simple business problems into solutions spanning multiple software components and deliver clear, tested, extensible code.
  • Comfort navigating large codebases, debugging other engineers’ code, and giving code review feedback.
  • Demonstrated ownership of personal growth and a habit of seeking feedback proactively.
  • Strong verbal and written communication skills for collaboration with a global engineering team.

Benefits

  • Remote-first work environment with the flexibility to work almost anywhere within the country of employment.
  • Base salary range of CAD $150,000 to $200,000 per year.
  • Equity eligibility through Affirm Holdings, Inc. rewards.
  • Monthly stipends for health, wellness, and tech spending.
  • 100% subsidized medical, dental, and vision coverage for employees and dependents.
  • Generous flexible spending wallets for technology, food, lifestyle needs, and family-forming expenses.
  • Competitive vacation and holiday schedules.
  • Employee stock purchase plan with the ability to buy Affirm shares at a discount.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

Motional

Software Engineer - Machine Learning (Behaviors)

Motional 1K-5K Automotive

Motional’s Behaviors team is hiring an engineer to develop machine learning models that help autonomous vehicles understand and predict traffic behavior in complex real-world driving scenarios.

Singapore Full-time Senior Machine Learning Engineer
C++ Computer Vision Deep Learning Machine Learning Neural Networks Python PyTorch
1 day, 13 hours ago
Weekday

PyTorch & MLOps AI Specialist

Weekday 11-50 Construction & Engineering

A leading AI lab’s Generative AI team is hiring an MLOps and ML Systems Engineer to support the development and evaluation of next-generation large language models and the training data that powers them.

United States Full-time Junior Machine Learning Engineer
$146k-$229k
Generative AI LLM MLOps PyTorch
1 day, 13 hours ago
Adzuna

Junior Python Developer - AI & Innovation Team

Adzuna 51-250 Internet Software & Services

Adzuna is hiring a Junior Python Developer to help build and maintain AI-powered jobseeker products and the production systems behind them for a remote team working in London hours.

South Africa Poland Portugal Romania Spain Greece Full-time Junior Backend Engineer Machine Learning Engineer
$27k-$32k
Apache Spark AWS CSS EC2 Git GitHub HTML LLM Machine Learning MySQL Playwright PostgreSQL Python React Selenium Solr SQL Tailwind CSS
1 day, 14 hours ago
Burq

Staff AI/ML Engineer

Burq 11-50 Air Freight & Logistics

Burq is hiring a Staff AI/ML Engineer to build the core AI systems that automate logistics operations and improve real-time decision-making for the company’s delivery platform.

United States Canada Full-time Lead Machine Learning Engineer
Computer Vision FastAPI MLOps Python Reinforcement Learning
1 day, 14 hours ago

You're on a roll! Sign up now to keep applying.

Sign Up

Already have an account? Log in

Used by 14,729+ remote workers