RemoteLeaf Logo
Log in Sign up

Senior Machine Learning Engineer (Fraud ML)

1 month, 3 weeks 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 147

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

Resilient Co

Ssr. Fullstack Engineer

Resilient Co 11-50 Professional Services

Resilient Co. is hiring a semi-senior Fullstack Engineer in Argentina or Brazil to build AI-driven full-stack solutions for enterprise workflows, with a focus on agentic AI, machine learning, backend services, and cloud integration.

Argentina Brazil Contract Senior Full-stack Engineer Machine Learning Engineer
Angular Azure C# CI/CD Django Docker Entity Framework FastAPI Flask Git JavaScript Microservices .NET NumPy Pandas Python RabbitMQ React Scikit-learn Terraform Vue.js YAML
3 hours, 54 minutes ago
CI&T

[Job 29881] Senior Machine Learning Engineer, Brazil

CI&T 5K-10K Internet Software & Services

CI&T is hiring a Senior Machine Learning Engineer in Brazil to develop and deploy production ML solutions that turn data and AI capabilities into measurable business impact.

Brazil Full-time Senior Machine Learning Engineer
Apache Airflow Apache Spark CI/CD dbt Git Machine Learning OpenSearch Python PyTorch Scikit-learn Snowflake SQL TensorFlow XGBoost
4 hours, 9 minutes ago
CookUnity

AI Native Engineer

CookUnity 251-1K Hotels, Restaurants & Leisure

CookUnity is hiring a dedicated AI engineer to redesign, automate, and own high-value internal workflows across the company’s cross-functional teams.

Canada Full-time Senior AI Engineer Machine Learning Engineer
$190k-$220k
AWS dbt Git JIRA Kotlin Linear NetSuite Notion PostgreSQL Python Snowflake SQL TypeScript Vercel
4 hours, 9 minutes ago
Smart Working

AI Director / Director of Machine Learning (Remote, Full-Time) [AS256]

Smart Working Internet Software & Services

Smart Working is hiring a remote AI Director to lead the strategy, research, and delivery of AI and machine learning initiatives that improve products, workflows, and operational outcomes.

India Full-time Lead AI (Artificial Intelligence) Machine Learning Engineer
C++ Computer Vision Generative AI LLM Machine Learning MLOps NLP Python PyTorch Reinforcement Learning TensorFlow
4 hours, 24 minutes 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