Top 25
Prep plan
Updated weekly · Last refresh Oct 17

Circle K Software Engineer Interview Questions

The questions to prepare for a Circle K Software Engineer interview. Questions from real interview reports rank first. Updated daily.

25questions
~4htotal time
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1
CodingStart here. 11 questions · ~114 min
Two Sum ProblemEasy
Practice

Find two indices in an array whose values add up to a target using a hash map.

Hash TablesArraysTwo PointersCircle K
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysCircle K
Binary Search on Sorted ArraysEasy

Explain how binary search works on a sorted array and why its time complexity is O(log n).

time complexityArraysSearchingCircle K
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2
Execution5 questions · ~52 min
Prioritize Work Under Tight DeadlinesEasy

Explain how you prioritize competing work under time pressure while making trade-offs and keeping stakeholders aligned.

Trade-offsRoadmappingScope ManagementCircle K
Improving a Legacy SystemMedium

Tests your approach to risk-managed modernization, testing, and incremental delivery.

Trade-offsRoadmappingRisk AssessmentCircle K
Design a Simple SolutionMedium

Tests your ability to translate requirements into a maintainable design with clear tradeoffs and constraints.

Trade-offsRoadmappingScope ManagementCircle K
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3
Behavioral & Leadership7 questions · ~73 min
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4
More topics2 questions · ~21 min
Optimize a Slow SQL QueryMedium

Evaluates your ability to diagnose and improve SQL query performance.

sqloptimizationCircle K
Normalization and Table RelationshipsMedium

Tests your understanding of normalization forms and how relational modeling affects data integrity and queries.

SubqueriesJoinsData WranglingCircle K
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.