Stripe Machine Learning Engineer Interview Questions + Guide in 2025

Stripe is a financial infrastructure platform that empowers businesses to accept payments, grow revenue, and accelerate new business opportunities.

As a Machine Learning Engineer at Stripe, you will play a pivotal role in building and deploying large-scale machine learning systems that drive significant business impact across various domains. Your responsibilities will encompass the entire lifecycle of machine learning models—from designing, training, and improving them, to deploying them in a production environment that enhances Stripe's suite of products. You will engage deeply with projects that intersect finance, technology, and data, working on innovative initiatives like the Stripe Assistant and foundation models that support tasks such as fraud detection and user behavior prediction.

To excel in this role, you will need a robust understanding of computer science, typically evidenced by a PhD in Computer Science, Machine Learning, or a closely related field. A strong foundation in programming languages such as Python, Scala, and Spark, along with libraries like Pandas and Scikit-learn, is essential. You should also have practical experience in supervised and unsupervised learning techniques, ML operations, and, ideally, exposure to Large Language Models (LLMs) or Reinforcement Learning.

Key traits that make a great fit for this position include a collaborative mindset, a proactive approach to learning and problem-solving, and excellent communication skills to effectively articulate complex ideas to team members and stakeholders. Familiarity with navigating new codebases and maintaining high-quality code standards will also be crucial.

This guide is intended to help you prepare for your interview by providing insight into the key skills and experiences that Stripe values in a Machine Learning Engineer. By understanding the nuances of the role and the company's expectations, you can better showcase your qualifications and stand out as a candidate.

Typically, interviews at Stripe vary by role and team, but commonly Machine Learning Engineer interviews follow a fairly standardized process across these question topics.

We've gathered this data from parsing thousands of interview experiences sourced from members.

Practice for the Stripe Machine Learning Engineer interview with these recently asked interview questions.