System Design Interview Questions

Study our database of real interview questions and answers verified by hiring managers and candidates.

554 questions
547 companies
25 roles
Last updated Nov 2026

+ Share interview

Design a Battleship game: the classes and interfaces, the game operations, how the board state is kept, and how to decide whether an attack hits a ship.
2 years ago
How would you design a system to route network packets between one hub and multiple node servers?
2 years ago
getBooks() returns about 1,000 book names in 500 ms and getText(book) returns up to a billion words in a second. How would you answer how often a word appears in a book within 400 microseconds?
4 years ago
How does a hash map work? What do bandwidth and latency mean? How does a process differ from a thread?
3 days ago
How would you design a Parquet-like columnar file format?
10 months ago
Get your questions answered
Our question database is made possible by user contributions. What were you asked in your most recent interview?
Share
Design a distributed system for processing transactions.
5 years ago
Design a market data feed from multiple venues to centralised strategies.
10 months ago
Design a trading system with event streaming.
10 months ago
Implement an exchange matching engine.
+210 months ago
Design a hit counter over the last 5 minutes in which each hit also carries a payload of a few KB, and the payloads do not fit in memory.
4 years ago
Design the integration that lets third-party websites embed Facebook's Like button.
3 years ago
Many simulation clients read their input data from NFS. How would you increase the read throughput?
10 months ago
Describe how a CPU instruction pipeline works.
2 years ago
How would you build a streaming platform from scratch?
4 years ago

Showing 541-554 of 554

Popular roles

Software Engineer Product Manager Engineering Manager Machine Learning Engineer Technical Program Manager

Interviewed recently?

Help improve our question database (and earn karma) by telling us about your experience

+ Share interview experience

Trending companies

System Design Interview Questions

Design a Battleship game: the classes and interfaces, the game operations, how the board state is kept, and how to decide whether an attack hits a ship.

How would you design a system to route network packets between one hub and multiple node servers?

getBooks() returns about 1,000 book names in 500 ms and getText(book) returns up to a billion words in a second. How would you answer how often a word appears in a book within 400 microseconds?

How does a hash map work? What do bandwidth and latency mean? How does a process differ from a thread?

How would you design a Parquet-like columnar file format?

Design a distributed system for processing transactions.

Design a market data feed from multiple venues to centralised strategies.

Design a trading system with event streaming.

Implement an exchange matching engine.

Design a hit counter over the last 5 minutes in which each hit also carries a payload of a few KB, and the payloads do not fit in memory.

Design the integration that lets third-party websites embed Facebook's Like button.

Many simulation clients read their input data from NFS. How would you increase the read throughput?

Describe how a CPU instruction pipeline works.

How would you build a streaming platform from scratch?

Explore questions by company

Explore questions by role

Follow Us