Cloudflare Online Assessment Questions
We hold only 1 confirmed online assessment report for Cloudflare so far. Below are its 6 closest coding and technical questions, which is what an OA draws from.
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Cloudflare Coding & Technical Questions
CloudFlare Phone Interview [Reject]
Applied online for Backend Engineer at CloudFlare and got invited to the online Hackerrank challenge. Got two questions 1) Use a Rest Api to list out Spiderman movies released in sorted...
#622 Design Circular Queue
LeetCode #622: Design Circular Queue. Difficulty: Medium. Topics: Array, Linked List, Design, Queue. Asked at Cloudflare in the last 6 months.
#1381 Design a Stack With Increment Operation
LeetCode #1381: Design a Stack With Increment Operation. Difficulty: Medium. Topics: Array, Stack, Design. Asked at Cloudflare in the last 6 months.
#23 Merge k Sorted Lists
LeetCode #23: Merge k Sorted Lists. Difficulty: Hard. Topics: Linked List, Divide and Conquer, Heap (Priority Queue), Merge Sort. Asked at Cloudflare in the last 6 months.
#207 Course Schedule
LeetCode #207: Course Schedule. Difficulty: Medium. Topics: Depth-First Search, Breadth-First Search, Graph Theory, Topological Sort. Asked at Cloudflare in the last 6 months.
#359 Logger Rate Limiter
LeetCode #359: Logger Rate Limiter. Difficulty: Easy. Topics: Hash Table, Design, Data Stream. Asked at Cloudflare in the last 6 months.
Most Common OA Topics
Cloudflare OA Format and Platform
The Cloudflare online assessment is delivered through a proctored online platform, most commonly HackerRank. Candidates receive the OA link by email after passing an initial resume review. The coding section typically contains 2 to 3 algorithmic problems with a 70 to 110 minute time limit.
Some Cloudflare teams include an additional work simulation section that tests judgment and decision-making rather than coding ability. This section is not present for all roles. Check the LeakCode question database filtered by role type to see what past candidates for your specific role reported.
FAQ
Does Cloudflare have an online assessment?
Yes. Cloudflare uses an OA as the first technical screen for most engineering and technical roles. It is typically sent after a resume review and before any human interviews. The format has remained consistent across recent hiring cycles.
How hard is the Cloudflare OA?
Based on candidate reports, Cloudflare OA problems range from LeetCode medium to hard. Expect at least one problem that requires an efficient algorithm (not brute force) to pass all test cases within the time limit.
Where do these OA questions come from?
All questions in the LeakCode database are sourced from actual candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where the original report is public.
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