Code For America Software Engineer Interview Questions

The questions to prepare for a Code For America Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

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CodingStart here. 9 questions · ~99 min

Sorting Algorithm and ComplexityEasy

Practice

Implement merge sort in Python and explain why it runs in O(n log n) time.

RecursionArraysSorting

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Linked List ReversalEasy

Practice

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

RecursionLinked ListsArrays

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Palindrome Function ImplementationEasy

Practice

Determine whether a string reads the same forward and backward using a two-pointer scan.

RecursionStringsTwo Pointers

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Longest Unique Substring in EnoMedium

Practice

Use a sliding window and hash map to find the longest substring without repeated characters in a string.

Hash TablesStringsTwo Pointers

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Execution4 questions · ~44 min

Clarify Ambiguous Project RequirementsMedium

Explain how you turn vague requirements into aligned scope, clear decisions, and shared understanding for the team.

ClarityDealing With AmbiguityProject Management

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Investigating a Reported BugMedium

Tests your debugging workflow, evidence gathering, and communication habits when fixing user-impacting issues.

CommunicationOwnershipRisk Assessment

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Optimizing an Existing SystemHard

Tests your ability to analyze performance issues and choose effective optimization strategies.

Trade-offsSuccess CriteriaRisk Assessment

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Behavioral & Leadership11 questions · ~121 min

Prioritizing Across Competing Client ProjectsEasy

Tests prioritization under pressure across multiple projects, including trade-off judgment, stakeholder communication, and ownership of outcomes.

OwnershipPrioritization

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