Coupang vs Epam Systems Interview Questions
Coupang lists 49 LeetCode interview questions while Epam Systems lists 46. They share 5 problems — 10% of Coupang's bank and 11% of Epam Systems's. Focus on the overlap first, then drill into 44 Coupang-only and 41 Epam Systems-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 5 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Coupang and Epam Systems.
Step 2 — Company-specific depth: Add Coupang-specific problems like Word Break, Subsets, Decode String and Epam Systems-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Coupang skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
5 Shared Questions
High-priority problems to practice for both Coupang and Epam Systems.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Unique Paths | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Group Anagrams | Medium |
| Kth Largest Element in an Array | Medium |
Unique to Coupang (44)
Problems in Coupang's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Word Break | Medium |
| Subsets | Medium |
| Decode String | Medium |
| LFU Cache | Hard |
| Longest Substring with At Most K Distinct Characters | Medium |
| Split BST | Medium |
| Range Module | Hard |
| Find Pivot Index | Easy |
| Course Schedule | Medium |
| Design In-Memory File System | Hard |
| Unique Paths II | Medium |
| Design Twitter | Medium |
Unique to Epam Systems (41)
Problems in Epam Systems's list that do not appear at Coupang.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Valid Parentheses | Easy |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Longest Palindromic Substring | Medium |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Rotate Array | Medium |
| Reverse String | Easy |
| House Robber | Medium |
Frequently Asked Questions
How many LeetCode questions do Coupang and Epam Systems share?
Coupang and Epam Systems share 5 LeetCode interview questions. 44 problems appear only in Coupang's list and 41 appear only in Epam Systems's list.
What topics overlap most between Coupang and Epam Systems?
The most common shared topics between Coupang and Epam Systems are Hash Table (3 shared questions), String (2 shared questions), Array (2 shared questions), Sorting (2 shared questions), Linked List (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Coupang or Epam Systems?
Coupang has 2 Easy, 33 Medium, and 14 Hard questions. Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. Coupang has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Coupang and Epam Systems?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 20 Coupang-specific and 20 Epam Systems-specific questions to round out your prep.