Discord Software Engineer Interview Questions
Practice the exact questions companies are asking right now.
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"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
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"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design Slack-like chat system
System design: Slack/Discord-like chat Design the chat subsystem for an app like Slack/Discord. Product requirements - The product has workspaces. Eac...
Design a TCP Discord-like chat server
Design a Discord-like chat server that accepts multiple clients over raw TCP (e.g., test via PuTTY/telnet). Functional requirements: - Clients connect...
Implement an asyncio-based chat server
Async Chat Server (Python asyncio) Implement a TCP chat server using Python asyncio. Part 1 — Single global room Your server listens on a given port a...
Demonstrate effective AI-assisted coding workflow
In an interview where you are allowed to use an AI coding assistant, you are given a large scoped task (e.g., implementing a TCP chat server). The int...
Design leader election using Redis leases
Leader/Follower via Redis (Lease-Based Leader Election) You have N stateless service instances running the same job. At any time, exactly one instance...
Design a Slack-like chat system
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Walk through your background and proud project
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Explain your database experience and debugging approach
Interview prompts (practical engineering) 1. What databases have you worked with? - Which engines (SQL/NoSQL), what scale, and what features you us...
Debug and mitigate a CPU spike incident
Production Debugging: CPU Spike Incident (Open-Ended) You are on-call for a backend service. An alert fires: CPU usage suddenly spikes on the service’...
Explain C++ alignment and ABI stability
You are interviewing for a senior C++ / systems role. The interviewer asks two low-level fundamentals questions: 1. C++ memory alignment and padding ...