Process
Typical algorithms and data structures questions. They were kind of interesting as the interviewers tried to make their questions unique.
I had two Skype interviews that went well. Unfortunately, I never heard back from them, even after sending an email to both recruiters.
Questions
LeetCode-style data structures and algorithms
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Interview Statistics
The following metrics were computed from 47 interview experiences for the Duolingo Software Engineer role in United States.
Success Rate
11%
Pass Rate
Duolingo's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Experience Rating
Positive49%
Neutral34%
Negative17%
Candidates reported having very good feelings for Duolingo's Software Engineer interview process in United States.
Duolingo Work Experiences
5.0
Nice place to work
Software Engineer • Current Employee
December 6, 2024
Pros: Nice people and good benefits.
Cons: Projects can be stressful with tight deadlines.
1.0
Great culture but bad management
Software Engineer • Former Employee
Pittsburgh, Pennsylvania, United States
August 31, 2022
Pros: The pay is pretty good. There are frequent socials that serve good food.
Cons: Upper management should stop micromanaging.
5.0
Amazing culture. Hopefully that stays
Software Engineer • Current Employee
March 20, 2026
Pros: - Great culture and emphasis on collaboration and having fun.
- Made several lifelong friends here.
- Post-IPO stock gains were great while they lasted.
- The CEO is smart and still in 'founder mode'.
- It's fun to work on problems in education for a brand that people love.
Cons: - Compensation is 80% of what you would get at Google or Facebook. The company is relying on its feel-good mission and stock growth to make up for the remaining 20%. The recent stock price crash has made this worse. HR had better act soon before the best talent leaves.
- We're hiring more people, but the scope of work for each person seems to be getting smaller over time.
- Pittsburgh is a great city to live in, but it limits your career opportunities if you want to switch companies.
- 5.0Nice place to workSoftware Engineer • Current EmployeeDecember 6, 2024Pros: Nice people and good benefits.Cons: Projects can be stressful with tight deadlines.
- 1.0Great culture but bad managementSoftware Engineer • Former EmployeePittsburgh, Pennsylvania, United StatesAugust 31, 2022Pros: The pay is pretty good. There are frequent socials that serve good food.Cons: Upper management should stop micromanaging.
- 5.0Amazing culture. Hopefully that staysSoftware Engineer • Current EmployeeMarch 20, 2026Pros: - Great culture and emphasis on collaboration and having fun. - Made several lifelong friends here. - Post-IPO stock gains were great while they lasted. - The CEO is smart and still in 'founder mode'. - It's fun to work on problems in education for a brand that people love.Cons: - Compensation is 80% of what you would get at Google or Facebook. The company is relying on its feel-good mission and stock growth to make up for the remaining 20%. The recent stock price crash has made this worse. HR had better act soon before the best talent leaves. - We're hiring more people, but the scope of work for each person seems to be getting smaller over time. - Pittsburgh is a great city to live in, but it limits your career opportunities if you want to switch companies.
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