Online Assessment
Duolingo OA Questions [2026-2027]
2 OA problems reported by candidates who interviewed at Duolingo. Updated from 7 sources including LeetCode, 1P3A, Reddit, and more.
What to expect in the Duolingo OA
Online assessments (OAs) are typically the first technical screening step at Duolingo. Candidates receive a timed coding challenge (usually 60-90 minutes) with 2-3 algorithmic problems. The OA is graded automatically and determines whether you advance to phone screens or onsite rounds.
The 2 questions below are reported directly by candidates who have completed the Duolingo OA. Use them to understand the difficulty level, problem types, and topics the OA focuses on.
Duolingo OA questions (2 reported)
Other Duolingo interview rounds
Frequently asked questions
What does Duolingo ask in their Online Assessment (OA)?▼
Based on 2 reported OA questions, Duolingo typically asks algorithmic coding problems in their online assessment. See the full question list above for current patterns.
How many OA rounds does Duolingo have?▼
Most candidates report 1-2 OA rounds at Duolingo. The OA typically includes 2-3 coding problems with a time limit of 60-90 minutes, depending on the role and team.
How hard is the Duolingo OA?▼
The Duolingo OA difficulty varies by role. Software engineering OA problems are typically Medium-level on LeetCode. Check the specific questions reported on this page for current difficulty patterns.
Related pages