DE Shaw vs Epam Systems Interview Questions
DE Shaw lists 105 LeetCode interview questions while Epam Systems lists 46. They share 11 problems — 10% of DE Shaw's bank and 24% of Epam Systems's. Focus on the overlap first, then drill into 94 DE Shaw-only and 35 Epam Systems-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 11 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DE Shaw and Epam Systems.
Step 2 — Company-specific depth: Add DE Shaw-specific problems like Binary Tree Cameras, Find Minimum Cost to Remove Array Elements, Maximum Number of Subsequences After One Inserting and Epam Systems-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: DE Shaw skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
11 Shared Questions
High-priority problems to practice for both DE Shaw and Epam Systems.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| House Robber | Medium |
| Valid Parentheses | Easy |
| Longest Consecutive Sequence | Medium |
| LRU Cache | Medium |
| Median of Two Sorted Arrays | Hard |
| Best Time to Buy and Sell Stock | Easy |
| Unique Paths | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Merge Sorted Array | Easy |
| Two Sum | Easy |
Unique to DE Shaw (94)
Problems in DE Shaw's list that do not appear at Epam Systems.
Unique to Epam Systems (35)
Problems in Epam Systems's list that do not appear at DE Shaw.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Longest Palindromic Substring | Medium |
| Valid Anagram | Easy |
| Group Anagrams | Medium |
| Rotate Array | Medium |
| Reverse String | Easy |
| Partition Equal Subset Sum | Medium |
| String Compression | Medium |
| Reverse Vowels of a String | Easy |
| 3Sum | Medium |
Frequently Asked Questions
How many LeetCode questions do DE Shaw and Epam Systems share?
DE Shaw and Epam Systems share 11 LeetCode interview questions. 94 problems appear only in DE Shaw's list and 35 appear only in Epam Systems's list.
What topics overlap most between DE Shaw and Epam Systems?
The most common shared topics between DE Shaw and Epam Systems are Array (7 shared questions), Dynamic Programming (4 shared questions), Hash Table (4 shared questions), Two Pointers (2 shared questions), Stack (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DE Shaw or Epam Systems?
DE Shaw has 11 Easy, 64 Medium, and 30 Hard questions. Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. DE Shaw has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DE Shaw and Epam Systems?
Start with the 11 shared problems since they cover what both companies ask most often. Then add 20 DE Shaw-specific and 20 Epam Systems-specific questions to round out your prep.