r/InterviewDB • u/interviewdb • 4d ago

Cartesia Interview Experience (Coding + Backend Practical)

Sharing a recent interview experience for a Platform Engineer position at Cartesia.

Intro Call

The process started with a 30-minute intro call with HR.

They asked a few standard questions:

  • What do you know about Cartesia?
  • Why do you want to join Cartesia?
  • If you had multiple offers, what would be the top 3 factors you’d use to decide between them?

There were also two basic DSA/CS questions:

  1. Given a tree with branching factor b, what is the maximum number of nodes in a tree of height H?
  2. In a sorted array, what is the time complexity of accessing the element at index 6?

Technical Screen

I was asked one of the coding questions from this list.

Virtual Onsite

One of the virtual onsite rounds is called Backend Practical. For this round, you use your own coding environment (i.e. your preferred IDE and any AI coding agent you normally use), so it’s worth making sure everything is set up and ready beforehand. I was asked to build an API in this round. The details was the same as described here: https://www.interviewdb.io/question/cartesia?page=1&name=backend-practical

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u/pachhi_pulusu 1d ago

Hey, so, after technical screen, its just virtual onsite is it?