Circle Coding Interview Questions
5 coding questions reported by candidates who interviewed at Circle, out of 5 Circle questions we track. They average 3.0/5 difficulty (medium). Most common topics: Circle, Simulation, Array, Software Engineer. 5 were reported asked within the last year, most recently in July 2026.
Practice Circle questions →Difficulty
- 2/5 — easy1
- 3/5 — medium3
- 4/5 — hard1
Asked for SWE (5), MLE (1)
Reported Circle coding questions
Task Query by Time and Name Filter with Sorting
3/5Featured in Circle coding interviews, this challenge requires you to filter and order a collection of active records based on temporal constraints and text matching criteria. You must design an efficient filtering routine that evaluates items valid at a specific timestamp and sorts the output according to strict rules. This exercise tests your proficiency in data manipulation and sorting algorithms. Discover the full problem details and complete model code by purchasing a subscription.
asked July 2026ArrayCircleSimulationUser Quota Scheduling with Expiring Assignments
3/5This Circle interview problem centers on designing an efficient scheduling algorithm that manages user capacity limits alongside time-bound task assignments. It measures your ability to track active intervals and handle automatic expirations dynamically. The complete problem statement and model implementation are available exclusively with a subscription.
asked July 2026CircleBanking System with Transfers, Top Spenders, Delayed Payments, and Account Merging
4/5In this comprehensive Circle interview challenge, applicants must build a robust financial ledger system that handles multi-account operations, timed transactions, spending metrics, and account mergers. The task tests complex state management, temporal event processing, and efficient relational updates under strict concurrency and balance constraints. Building a clean architecture for these interdependent operations requires careful data structure selection. Reviewing the complete prompt, edge cases, and architectural solution demands a paid subscription.
asked July 2026CircleDesignHashmapBanking System (Multi-part Account Operations and Historical Balance Query)
3/5This Circle coding question asks you to build a small in-memory account service that supports deposits, transfers and point-in-time balance lookups. It tests object-oriented design, input validation and choosing a data structure that answers time-based queries quickly.
asked July 2026CircleTask Management System: Add and List Current Tasks
2/5As reported from a Circle coding round, this exercise asks candidates to build a lightweight task management utility capable of recording entries and outputting active workloads. The task tests fundamental data modeling, collection management, and command parsing abilities under structured input streams. Comprehensive details, interface guidelines, and model code are available exclusively to subscribed members.
asked July 2026Circle
Circle coding interview FAQ
- What coding questions does Circle ask?
- 5 reported coding questions, most often on Circle, Simulation, Array, Software Engineer, Sorting.
- How hard is the Circle coding interview?
- The reported coding questions average 3.0 out of 5: 1 at 2/5, 3 at 3/5, 1 at 4/5.
- Are these Circle coding questions recent?
- The most recent report is from July 2026, and 5 were reported within the last twelve months. Dates come from the interview reports themselves.