Affirm Software Engineer Interview Questions
Practice the exact questions companies are asking right now.
Implement and debug event filtering in Python
You are given a list of event dictionaries with keys: id (str), type (str), ts (int, seconds since epoch), payload (dict). Implement filter_events(eve...
Implement an LRU cache
Problem Design and implement an LRU (Least Recently Used) cache that supports the following operations in average O(1) time: - get(key) -> value: Retu...
Design a Ticketmaster-like ticketing system
System Design Prompt Design an online event ticketing platform (Ticketmaster-like) that allows users to: 1. Browse/search events and view seat maps (o...
Find shortest unique substring per word
Shortest unique substring for each word You are given an array of distinct strings words. For each word w in words, find a non-empty contiguous substr...
Determine winner in optimal-play card game
Given a row of N cards with integer values (values may be positive, zero, or negative), two players alternately pick either the leftmost or rightmost ...
Discuss team fit and leadership with manager
Behavioral Interview Prep: 30‑Minute Hiring Manager Conversation (Software Engineer) Context You are preparing for an onsite hiring manager interview ...