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System Design Interview Questions

Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.

9403
Questions: 546
Companies: 11
Topics: 8
Languages

Showing 31–38 of 38 results

OptiverHardSoftware Engineer
Design a topic-based news subscription system
This question evaluates system design skills for building a topic-based news subscription service, focusing on streaming ingestion, relevance filtering, sliding-window rate limiting, de-duplication, ordered delivery, and data structure choices for in-memory operation.
System DesignOnline Assessment
PinterestMediumSoftware Engineer
Design a Distributed Rate-Limiting Service
Design a highly available, ultra-low-latency distributed rate-limiting service supporting multi-tier rules (user, tenant, route, global) across globally distributed edge gateways.
System DesignOnline Assessmentsystem-designdistributed-systemsrate-limiting
PinterestMediumSoftware Engineer
Design a Multi-Channel Notification System
Design an extensible, resilient multi-channel notification engine (push, email, SMS, in-app) supporting high throughput, deduplication, quiet hours, rate limiting, and provider fallbacks.
System DesignOnline Assessmentsystem-designdistributed-systemsevent-driven
Qualified HealthMediumSoftware Engineer
Design Notifications for One Million Internal Producer Services
Design notification ingestion and delivery for a million internal producers, separating service-count scale from throughput, bursts, and fanout.
System DesignOnline Assessment
RampMediumSoftware Engineer
Design a banking system with payments and merging
This question tests your ability to design a robust, distributed financial ledger system that handles high-throughput transactions, ensures strict consistency, and supports the complex operation of merging two distinct user accounts.
System DesignOnline AssessmentDistributed SystemsDatabasesFintech
RampHardSoftware Engineer
Design an in-memory cloud storage system
This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Design an in-memory cloud storage system states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignOnline Assessment
Resolve.AiMediumSoftware Engineer
Design a Weighted Log Distributor
This question tests your ability to design a distributed system that routes incoming log streams to multiple storage clusters based on specified weight configurations while ensuring high availability and fault tolerance.
System DesignOnline AssessmentLoad BalancingDistributed SystemsData Pipelines
VisaMediumSoftware Engineer I
Design E-Commerce Tables and Indexes for Recent-Spend Queries
This question tests database schema normalization, data integrity in e-commerce transactions, and the ability to optimize SQL queries using indexing strategies.
System DesignOnline AssessmentSQLDatabase DesignIndexing