Cursor Anysphereco Interview Questions (May 2026)
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Cursor Anysphere Software Engineer Interview Technical Phone Screen
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passed technical phone screen for Cursor. Anysphere is the parent company that develops Cursor (the AI editor that you use) ## The task Cursor has experienced a rapid growth in developers using the completions API and other endpoints. We are building a rate limiter You have a list of data (in memory for now) of the form [user_id, request_url, body_size (bytes), timestamp (seconds)] and need to complete the below tasks ### Task 1: Enforce a rate limit for one endpoint Enforce a rate of 3 requests/second for the v1/completions/standard endpoint. Do not count "denied requests" for the calculation. Other endpoints do not have a rate limit enforced this iteration Rate limits are enforced on the per user basis. Read the problem requirement to understand why! ### Task 2: Rate Limiter Interface Suppose that 10 other developers come to you to build a rate limiter for their endpoints. You need to extend your interface to support patterns like this: * Rate limit the v1/completions/chunked endpoint at 7 requests/minute * Allow 5 requests/second to the v2/completions/chunked endpoint * Allow requests to the v1/completions/chunked endpoint if the total request byte size doesn't exceed 100 in the past minute * Allow 7 requests/hour total across all endpoints * The rate limit rule from task 1 If all the above checks are satisfied, then you count that request. If even one is denied, don't process and don't count for the calculation ## Reflection * Goal from the interviewer was to get a working solution. Don't overindex on time and space complexity optimization * First part was pretty straightforward in terms of implementing the provided stub. Just use the simple way * Second part required some thinking and I ended up going with an interface and 2 concrete classes to support the types of rate limits developer want. I got like 95% of the way through and had the primitives ready. I just didn't get time ot add all the initializations in the main function, but interviewer wasn't too concerned about that. They cared about how I'd run the main function on all the rate limiters and decide allow or deny. * I received followup in an hour after the interview and moved to
next round * Keep communicating your thoughts to the interviewer and involve them like a stakeholder
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More from Cursor Anysphereco
Cursor Anysphereco Interview Process Overview
The Cursor Anysphereco interview process typically includes a recruiter screen, one to two technical phone screens, and a 4-6 round on-site or virtual on-site loop. Each round serves a distinct calibration purpose: coding rounds measure correctness, code quality, and complexity reasoning; system design rounds measure architectural judgment at the appropriate level; behavioral rounds measure ownership, leadership scope, and collaboration. Reports tagged on LeakCode from 2024-2026 show Cursor Anysphereco runs a calibrated process consistent with industry norms for companies of its tier.
Difficulty calibration: Cursor Anysphereco coding rounds typically run medium difficulty with follow-up depth as the senior discriminator. System design rounds expect production-grade trade-off articulation at L4+ levels. Behavioral rounds expect quantified outcomes ("reduced p99 latency from 800ms to 120ms") rather than vague impact claims. The candidates who advance consistently demonstrate clear thinking out loud rather than perfect final answers.
How To Use Cursor Anysphereco Question Reports
Real candidate-reported interview questions are a calibration tool, not a memorization target. Cursor Anysphereco updates its question pool every 2-4 months; memorizing exact problems risks misleading you when the interviewer uses a variant. The high-leverage approach: identify the patterns that appear repeatedly in Cursor Anysphereco reports, practice those patterns on similar (not identical) problems, and use the reports to understand the interviewer's typical follow-up depth.
Filter the questions above by round type, difficulty, and recency. Focus first on reports from the past 6-12 months; older reports may reference questions that have since rotated out of Cursor Anysphereco's pool. Reports tagged with quantified difficulty and explicit round type are higher-signal than reports without those tags. The metadata filters help you build a focused study plan in 1-2 hours rather than 8-10 hours of unstructured browsing.
Common Cursor Anysphereco Interview Mistakes
Reports tagged "no hire" at Cursor Anysphereco consistently surface a few patterns: jumping into code without clarifying requirements, coding silently for extended periods, missing edge cases (empty input, single element, large input, overflow), producing working code the candidate cannot refactor when probed, and behavioral stories that use "we" instead of "I" diluting individual signal. Strong candidates explicitly avoid these patterns by following a consistent round template.
The single most predictive failure mode in recent reports: not asking clarifying questions. Interviewers are explicitly trained to weight this dimension. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into implementation immediately. Strong candidates also verbalize their approach before writing code; weak candidates code in silence and lose the communication dimension of the round's calibration.