Credit Genie

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Credit Genie is a financial technology company that offers a mobile app to help consumers manage debt, improve their financial health, and access personal loans or credit-building tools. It is known for using data-driven personalization to provide budgeting insights and debt relief solutions.

3 interview notes · updated Jul 2026

Credit Genie·Software Engineer·Take-home Assignment

Jun 2026

Technical interview at Credit Genie for a Software Engineer role where they handed me a partially built FastAPI project and asked me to finish it. Pretty hands-on, less whiteboard theory and more "here's real code, make it work."

You're given a FastAPI project with working create and read endpoints and shared Pydantic models. Implement the missing update and delete endpoints to complete the CRUD setup, matching the existing request/response schemas and status codes.
Write unit tests covering all four CRUD endpoints.
How would you approach implementing these endpoints if you had never used FastAPI before, using the existing code and documentation as your guide?

“The existing endpoints were basically a blueprint so I leaned on those hard.”

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Credit Genie·Software Engineer·Technical Phone Screen

May 2026

Technical phone screen for a software engineer role at Credit Genie. The question was a nested loop printing problem that spiraled into a pretty thorough complexity and design discussion. More depth than I expected for what looked like a warmup.

Implement a function that prints n lines where line i contains integers 1 through i separated by spaces. Then analyze time and auxiliary space complexity for a print-as-you-go approach versus a build-then-print approach, describe common off-by-one pitfalls, and write a version that returns a list of strings instead of printing.

“Started fine with the basic loop, but the complexity breakdown is where I got a bit tangled.”

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Credit Genie·Software Engineer·Hiring Manager Screen

May 2026

Interviewed for a Software Engineer role at Credit Genie. The format was a mix of behavioral and technical questions, leaning pretty heavily on how you handle API design decisions and communication with collaborators. Nothing too wild but the None-vs-empty-object question caught me off guard a bit.

Give a brief self-introduction tailored to an ML Engineer background.
Why Credit Genie, and how does the company's mission connect to what you're looking for?
Tell me about a time you and a collaborator had a misunderstanding about an expected return type or API contract. How did you resolve it?
When you're unsure whether a function should return None or an empty object, how do you decide and how do you document that decision?
What questions would you ask about role expectations, how success is measured, and how the team collaborates?

“Standard opener.”

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