Amazon
E-commerce and cloud leader with emphasis on highly available, scalable services and operational excellence.
Coinbase
Coinbase — company profile used as primary reference for system design questions.
Databricks
Databricks — unified data and AI platform for large-scale analytics and machine learning.
DoorDash
DoorDash is an on-demand prepared food delivery service connecting customers, merchants, and couriers.
Social platform focused on high-throughput, low-latency services and large-scale data systems.
Search, cloud and infrastructure company; commonly asks scale and distributed systems design questions.
LinkedIn — professional networking platform; frequently asks system-design questions about scalable data systems, caching, and ranking.
Meta
Meta (formerly Facebook) — social media and advertising platform.
Microsoft
Platform and cloud provider that designs resilient, secure, and enterprise-grade distributed systems.
Misc
Generic placeholder company used for broadly applicable system design questions and interview practice.
OpenAI
OpenAI — company profile included in the list of companies for the system design question.
Stripe
Payments and financial infrastructure company; includes backend and distributed-systems engineering roles.