Upstart Software Engineer Interview Guide

Candidates describe Upstart's Software Engineer process as a mix of timed coding, system design, a hands-on project round, and hiring manager conversations. The exact loop varies by report, so check the schedule with your recruiter and ask what each round will cover. More than one candidate said the format of later rounds was unclear going in.

The coding portion is where reports diverge most. One candidate faced a CodeSignal assessment with three problems capped at 7, 15 and 30 minutes, including an anagram-bucketing and a string-decoding question, with the last reaching LeetCode medium-hard. Another described four LeetCode-style questions in 60 minutes, followed by a brief AI-reviewed follow-up with a two-minute response window. A third had an hour-long live round with two problems, one medium and one that felt hard, and could not finish both. Practice finishing clean solutions fast and asking clarifying questions early, since time pressure is the most common complaint.

System design questions that candidates name include a ledger system and an online chess system. One candidate said the interviewers let them lead and choose their own diagramming tool. The project round draws the most positive comments. One candidate described working on a real company problem with an engaged panel. Another was told they could use AI tools such as Cursor or ChatGPT in that stage, so confirm the rules beforehand. One candidate also had a separate app coding round: building a Spotify-like app in Ruby on Rails in about fifty minutes, with Rails-specific follow-ups.

For the behavioral side, candidates report hiring manager conversations about past projects, plus questions such as the most challenging thing you have worked on. One candidate was turned down after the manager felt their project explanation lacked detail, so prepare to go deep without being prompted. Several candidates also mention slow communication between rounds.