Confluent Software Engineer Interview Questions
Master your tech interview with our curated database of real questions from top companies.
Rank songs by pairwise user preferences
You are given preference rankings for n users over m songs. Each song is labeled from 0 to m - 1. For each user i (0-indexed), you are given an array ...
Design temporary email service
System Design: Disposable Email Service with Expiring Inboxes Context Design a production-grade disposable/temporary email service for web/mobile clie...
Answer standard behavioral prompts
Behavioral & Leadership Prompts (Technical Screen — Software Engineer) Context: You will be asked to answer standard behavioral prompts. Aim for conci...
Implement tail N lines
Implement a function tail(path: string, N: int) that prints the last N lines of a potentially multi-GB text file without loading the whole file into m...
Implement tail N lines
Implement a utility that prints the last N lines of input. Requirements: handle both a regular seekable file and a non-seekable stream (stdin/pipe); s...
Solve constrained monster traversal
You are given a directed graph with n rooms labeled 0..n-1; each room i contains a monster with health hp[i] ≥ 0. You start at room s with energy E. E...
Explain variadic functions
Variadic Functions in Two Languages + Typesafe Variadic Logger Context Variadic functions accept a variable number of arguments. In systems and backen...
Design a temporary email service
Design a Disposable Email Service with Auto-Expiring Addresses You are asked to design a receive-only disposable email service (e.g., 10‑minute inboxe...
Design a distributed key-value store at scale
System Design Prompt: Globally Distributed, Read-Optimized Key-Value Store Context and minimal assumptions Design a globally distributed key-value (KV...
Explain algorithm strategies and complexity
You are faced with a complex, potentially ambiguous coding problem. Describe how you would clarify requirements, identify constraints, propose multipl...