EY

EY

Ernst & Young Global Limited, a multinational professional services partnership.

4 Rounds ~21 Days Medium
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The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

Software Engineer • Coding • medium

Given a string of log data, find the length of the longest substring without repeating characters.

#Sliding Window #Hash Table #Strings
Practice
Software Engineer • Coding • easy

Given an array of transaction amounts and a target audit sum, return indices of the two numbers such that they add up to the target.

#Arrays #Hash Table
Practice
Software Engineer • Coding • easy

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. This is often used to validate nested JSON structures in our tax APIs.

#Stacks #String Manipulation
Practice
Software Engineer • Coding • medium

Given an array of audit engagement time intervals where intervals[i] = [start_i, end_i], merge all overlapping intervals.

#Arrays #Sorting
Practice
Software Engineer • Coding • medium

Write a function to group an array of strings into anagrams. We sometimes use similar logic for fuzzy matching client names.

#Hash Table #Strings #Sorting
Practice
Software Engineer • Coding • easy

Given the head of a singly linked list representing a sequence of approval workflows, reverse the list and return the reversed list.

#Linked Lists
Practice
Software Engineer • Coding • medium

Given an integer array of expense category IDs and an integer k, return the k most frequent elements.

#Heaps #Hash Table #Bucket Sort
Practice
Software Engineer • Coding • medium

Given a binary search tree representing an organizational hierarchy, find the lowest common ancestor (LCA) node of two given employee nodes.

#Trees #Binary Search Tree #Recursion
Practice
Software Engineer • Coding • easy

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n representing sequential invoice numbers, find the one that is missing from the array.

#Math #Bit Manipulation #Arrays
Practice
Software Engineer • Coding • medium

Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or more dictionary words. Used for parsing continuous text in legacy financial documents.

#Dynamic Programming #Memoization #Trie
Practice

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The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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Think Out Loud

Always explain your thought process before writing code or drawing architecture.

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