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Prep plan
Updated weekly · Last refresh Aug 30

Oscar Health Software Engineer Interview Questions

The questions to prepare for a Oscar Health Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~10htotal time
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1
CodingStart here. 18 questions · ~210 min
LRU Cache for Fast RetrievalMedium
Practice
Recently asked

Implement an LRU cache using a hash map and doubly linked list to support O(1) get and put operations.

Hash TablesSearchingSortingOscar Health
Interweaving Strings CheckMedium
Practice

Use dynamic programming to determine whether one string preserves the order of two interleaved Oscar Health messages.

Oscar Health
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2
Execution12 questions · ~140 min
Design Inference API Rate LimitingHard
Recently asked

Design a rate-limiter for a multi-tenant AI inference API that protects capacity, preserves fairness, and supports different customer tiers.

Trade-offsdesign systemrate limitingOscar Health
Replicate vs Shard DatabasesHard
Recently asked

Tests distributed systems tradeoffs for scaling data across multiple instances.

Trade-offsdatabasescalabilityOscar Health
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3
System Design9 questions · ~105 min
O(1) Queue OperationsHard

Tests data structure design and constant-time operation guarantees.

QueueOscar Health
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4
SQL & Data Manipulation3 questions + 3 drills · ~65 min
5
Behavioral & Leadership5 questions · ~58 min
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6
More topics2 questions · ~23 min
Ingest Fragmented Health RecordsHard
Recently asked

Tests data pipeline design for messy inputs, normalization, reliability, and traceability.

Data Qualitydata integrationETLOscar Health
Claims Microservices for Real TimeHard
Recently asked

Tests system design for throughput, latency, reliability, and operational complexity in claims workflows.

Stream ProcessingCloudmicroservicesOscar Health
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.