Senior Machine Learning Data Scientist

About the Role:

As a Machine Learning Data Scientist on Extend’s Risk & Fraud Machine Learning Team, you will develop and deploy cutting-edge machine learning models to detect and prevent fraud, enhance decision-making, and drive business value. You’ll work closely with product, engineering, and operations teams to build scalable, production-ready machine learning applications that support Extend’s post-purchase products, including product protection, shipping protection, and more. 

What You’ll Be Doing:

• Develop and deploy machine learning models to prevent and detect fraud and abuse, leveraging structured and unstructured data sources.
• Own the end-to-end ML lifecycle, including data preprocessing, feature engineering, model training, evaluation, validation, and deployment.
• Monitor and maintain models in production to ensure performance and reliability over time.
• Collaborate with product and engineering teams to integrate machine learning models into production applications.
• Foster a culture of learning, experimentation, and collaboration within and across partner teams.

What We’re Looking For: 

• 3+ years of experience building and deploying production machine learning models.
• Previous experience building fraud detection or risk assessment tools is a strong plus.
• Solid understanding of fundamental machine learning and computer science concepts, software design best practices.
• Expertise with Python, including common ML/AI libraries such as Scikit-learn, Pytorch, or Tensorflow.
• Expertise with SQL; experience with dbt or graph databases is a plus.
• Familiarity with large language models (LLMs) and their applications in risk and fraud detection.
• Experience with AWS, cloud computing, and/or Typescript is a plus.
• Excellent communication and stakeholder management skills, with a track record of working cross-functionally to drive business impact.
• Attention to detail, intellectual curiosity, and a deep understanding of user behavior and fraud patterns.
• Empathy and humility.

Estimated Pay Range: $150,000 - $170,000 per year salaried*

* The target base salary range for this position is listed above. Individual salaries are determined based on a number of factors including, but not limited to, job-related knowledge, skills and experience.