Top 50
Prep plan
Updated weekly · Last refresh Oct 17

Patreon Software Engineer Interview Questions

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

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1
CodingStart here. 28 questions · ~277 min
Flatten Nested DictionariesEasy
Practice

Flatten nested Patreon metadata into dot-separated keys using iterative depth-first traversal.

RecursionHash Tablesjson parsingPatreon
Design an Expiring LRU CacheHard
Practice

Implement an LRU cache with TTL support using a hash map, doubly linked list, and lazy expiration.

Hash TablesQueueLinked ListsPatreon
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2
System Design7 questions · ~69 min
Design a High-Scale System With Data ModelsHard

Evaluates your ability to design scalable architectures with clear data modeling and API contracts.

Patreon
Async Multi-Threading and Search SystemHard

Assesses your ability to design end-to-end systems with concurrency and user-facing search.

Patreon
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3
Execution3 questions · ~30 min
Design a Creator Credit CardHard

Tests your end-to-end product thinking for a creator-focused payments feature and your trade-off judgment.

Trade-offsRoadmappingrequirementsPatreon
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4
Behavioral & Leadership8 questions · ~79 min
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5
More topics4 questions · ~40 min
SQL for Course Enrollment MetricsMedium
Practice

Use LEFT JOINs and aggregation to summarize published Patreon education courses by active professor and department.

JoinssqlPatreon
Distributed Ledger for BalancesHard

Tests your system design skills for financial correctness, consistency, and complex flows.

transactionsdata integrityData ModelingPatreon
SQL for Creator Performance MetricsMedium

Tests SQL proficiency with joins, aggregation, and producing business-ready metrics.

Date FunctionsJoinsAggregationsPatreon
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.