Stripe Interview Questions: The Process, Bug Squash and How to Prepare (2026)

The short answer: Stripe’s engineering interviews focus on practical, real-world work rather than puzzles. In the words of Stripe’s own engineering guide: “Our questions seek to understand how people approach real world problems, rather than testing for esoteric skills you might demonstrate on a whiteboard.” The best-known example is the Bug Squash interview, where you debug a real historical bug in an open-source project, in your own language. Interviews follow written rubrics, and clear communication is assessed explicitly. To prepare: practice reading and debugging unfamiliar code, writing working code against real APIs, explaining your reasoning out loud, and telling specific stories about your work. Below is what Stripe says about its process, the interview types, behavioral questions and how to prepare.

What Stripe says about its interviews

Stripe’s guide to scaling engineering organizations, by Raylene Yung, describes several practices:

• Real-world problems: questions about “how people approach real world problems,” not whiteboard trivia.
• Bug Squash: “candidates and interviewers sit side by side to solve a real historical bug in an open-source project while working in the candidate’s programming language of choice.”
• Rubrics: “We standardise questions using written rubrics that define exactly how to run each interview, evaluate those questions consistently and compare scores across candidates.”
• Your own setup: “Engineers choose from a number of different programming languages and can use their own laptop and development environment.”
• Preparation guides: Stripe shares “written guides to help them understand Stripe’s culture and prepare for the interview.” Read them carefully if you receive them.

The guide also says Stripe surveys candidates, and that those without offers rated their experience 4.1 out of 5 on average.

The interview types to prepare for

The exact loop depends on the role and level; your recruiter will tell you which interviews you’ll have. For engineering roles, prepare for:

Bug Squash (debugging)

You get an unfamiliar codebase with a real bug. What helps:

1. Reproduce the bug first. Run the failing test or steps.
2. Read before you change. Find the relevant code path; skim the tests and documentation.
3. Form a hypothesis and test it, with logging, a debugger or a small test.
4. Make a targeted fix and confirm it, ideally with a test.
5. Narrate as you go. The interviewer is evaluating your process.

Practical coding

Expect problems closer to day-to-day work than to puzzles, such as processing data, building a small feature, or working with an API. Write clean, working code first, handle edge cases, and test it.

System design (for experienced roles)

A design discussion about a realistic system. See our guide to system design interviews.

Behavioral and experience interviews

Questions about past projects, collaboration and judgment.

What Stripe looks for in communication

Stripe’s guide includes rubric criteria for communication, including whether candidates answer clearly, give concrete details about their own work, and engage in a real two-way conversation. In practice:

• Lead with the main point, then give detail.
• Use specific examples: what you built, the decisions you made, the numbers.
• Make it a conversation: ask clarifying questions and respond to the interviewer’s hints.

Behavioral questions to prepare

• Tell me about a project you’re proud of. What was your role?
• Tell me about a difficult bug you fixed in production.
• Tell me about a time you disagreed with a technical decision.
• Tell me about a time you had to learn a new codebase or technology quickly.
• Tell me about a time you made a mistake that affected users. What did you do?
• Why Stripe?

Answer with the STAR method. For “Why Stripe?”, be specific about the products, users or problems that interest you, and connect them to your own experience. See why do you want to work here.

How to prepare

• Debug unfamiliar code: pick an open-source project in your main language, find a reported bug, and fix it. Time yourself.
• Practice with real APIs: read documentation, make requests, handle errors and pagination.
• Set up your environment so you’re fast in it: editor, debugger, test runner.
• Practice explaining your thinking out loud while you code.
• Prepare four or five stories about your work with specific details and results.

Frequently asked questions

Sources

• Stripe Atlas, Scaling engineering organizations, Raylene Yung. Read on 1 October 2026.