Process
I was given a HackerRank assessment to be completed within five days of receipt.
Unfortunately, I did not manage to advance to the next round.
The questions were LeetCode medium/hard difficulty and related to DFS and backtracking.
Questions
The question was about finding unique words in an owl dictionary, where words have the same meaning if one word can be derived from the other by removing exactly one letter. For example, 'caw' and 'caww' have the same meaning, as do 'caww' and 'caaww'. By transitivity, 'caw', 'caww', and 'caaww' all have the same meaning and thus comprise one unique word.
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Interview Statistics
The following metrics were computed from 3 interview experiences for the Duolingo Software Engineer - New Grad role in United States.
Success Rate
Duolingo's interview process for their Software Engineer - New Grad roles in the United States is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very good feelings for Duolingo's Software Engineer - New Grad interview process in United States.
Duolingo Work Experiences
- 4.0Overtime Was ConstantSoftware Engineer • Former EmployeeNew York, New York, United StatesOctober 22, 2020Pros: Not many, at least not for me.Cons: Overtime was a constant in the job.
- 5.0Excellent contract at an international company.Quality Review Specialist • Former EmployeePittsburgh, Pennsylvania, United StatesDecember 2, 2024Pros: - Friendly environment - Frequent bonuses - High salary - Competent leadershipCons: - Instability, due to it being a contract. - For contractors, there are no career growth opportunities.
- 4.0Great learning environment but fast-paced and unpredictableSoftware Engineer • Former EmployeeJune 24, 2026Pros: There was a good vibe. Everyone loves learning new techniques.Cons: The pace can be intense, and priorities may shift quickly.
Duolingo Interview Questions
