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Interview questions by company and topic | SysRound

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95 questions

Showing 26–50

CodingMedium
Implement Follow Graph with Snapshots and Recommendations
Design and implement a social follow graph that supports snapshotting the state of relationships at a given point in time and generating friend/follow recommendations based…
Companies: OpenAI
Data Structure Design · Graphs
Last reported Sep 2026
Open workspace
Practical engineeringHard
Build a Rectangle Board with Remove-at-Cell, Batch Remove, and Undo
Companies: OpenAI
Data Structure Design · Low-Level Design (OOP)
Last reported Aug 2026
Open workspace
Practical engineeringHard
Implement a Set with Readable Snapshots
Companies: OpenAI

Page 2 of 4

Data Structure Design

Last reported Aug 2026

Practical engineeringHard

Indexed Vector as a Linked List with Checkpoints Every k Nodes

Companies: OpenAI

Data Structure Design · Linked Lists

Last reported Jul 2026

Practical engineeringHard

Function-Call LRU Cache: Argument Key Generation and Crash Recovery from a Log

Companies: Anthropic

Data Structure Design · Database Internals

Last reported Jul 2026

Practical engineeringMedium

Clarify and Design Social-Graph Milestones

Companies: OpenAI

Data Structure Design · Graphs

Last reported Jul 2026

Practical engineeringMedium

Rectangle Store With Constant-Time Point Coverage Counts and Removal by ID

Companies: OpenAI

Data Structure Design

Last reported Jul 2026

CodingHard

Build a Progressive Banking Ledger

Companies: Anthropic

Data Structure Design · Simulation & State Machines

Last reported Jul 2026

CodingHard

Build a Progressive Employee Tracker

Companies: Anthropic

Data Structure Design · Simulation & State Machines

Last reported Jul 2026

CodingHard

Build a Versioned In-Memory Database

Companies: Anthropic

Data Structure Design

Last reported Jul 2026

Practical engineeringHard

Debug Python LRU Cache-Key Construction

Companies: Anthropic

Data Structure Design · Debugging

Last reported Jul 2026

CodingHard

Consistent Hashing Ring with Virtual Nodes for Shard Rebalancing

Companies: OpenAI

Data Structure Design · Partitioning & Consistent Hashing

Last reported Jun 2026

CodingMedium

Banking System Simulation

Companies: Anthropic

Data Structure Design · Simulation & State Machines

Last reported Jun 2026

System designMedium

Object-Oriented Design: Snake Game

Companies: Amazon

Data Structure Design · System Design

Last reported Jun 2026

CodingHard

Aggregate Recent Message Events And Active Chats

Companies: OpenAI

Data Structure Design

Last reported Jun 2026

CodingMedium

Implement A Contiguous Memory Allocator With Free-Block Coalescing

Companies: OpenAI

Data Structure Design · Memory Management

Last reported Jun 2026

Practical engineeringMedium

Implement a Simple Memory Allocator

Companies: OpenAI

Data Structure Design · Memory Management

Last reported May 2026

CodingMedium

Implement a Banking System

Companies: Anthropic

Data Structure Design · Payments & Ledgers

Last reported May 2026

CodingHard

Implement Persistent Memoization LRU Cache

Companies: Anthropic

Data Structure Design · Parsing & Interpreters

Last reported May 2026

CodingHard

Implement a Simplified DNS Resolver

Companies: Anthropic

Concurrency · Data Structure Design

Last reported May 2026

CodingMedium

Implement Social Graph Snapshot Queries

Companies: OpenAI

Data Structure Design · Graphs

Last reported Apr 2026

CodingHard

Schedule Incremental Labeling Tasks

Companies: OpenAI

Data Structure Design · Job Scheduling & Workflows

Last reported Apr 2026

CodingMedium

Implement a crash-resilient LRU cache

Companies: Anthropic

Caching · Data Structure Design · Database Internals · System Design

Last reported Mar 2026

CodingMedium

Design an Editable Text Buffer

Companies: OpenAI

Data Structure Design · Stacks & Queues

Last reported Mar 2026

CodingMedium

Simulate Turn-Based Monster Battles

Companies: OpenAI

Data Structure Design · Simulation & State Machines

Last reported Mar 2026