Epam Systems vs Zenefits Interview Questions
Epam Systems lists 46 LeetCode interview questions while Zenefits lists 21. They share 6 problems — 13% of Epam Systems's bank and 29% of Zenefits's. Focus on the overlap first, then drill into 40 Epam Systems-only and 15 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Epam Systems and Zenefits.
Step 2 — Company-specific depth: Add Epam Systems-specific problems like Two Sum, Longest Substring Without Repeating Characters, Minimum Operations to Make a Uni-Value Grid and Zenefits-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zenefits skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both Epam Systems and Zenefits.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Generate Parentheses | Medium |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Median of Two Sorted Arrays | Hard |
Unique to Epam Systems (40)
Problems in Epam Systems's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Minimum Operations to Make a Uni-Value Grid | Medium |
| 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 |
| Group Anagrams | Medium |
| Rotate Array | Medium |
| Reverse String | Easy |
Unique to Zenefits (15)
Problems in Zenefits's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Graph Valid Tree | Medium |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Course Schedule II | Medium |
| Min Stack | Medium |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| Majority Element | Easy |
| Convert Sorted List to Binary Search Tree | Medium |
| Sliding Window Maximum | Hard |
| N-Queens II | Hard |
| Valid Palindrome | Easy |
Frequently Asked Questions
How many LeetCode questions do Epam Systems and Zenefits share?
Epam Systems and Zenefits share 6 LeetCode interview questions. 40 problems appear only in Epam Systems's list and 15 appear only in Zenefits's list.
What topics overlap most between Epam Systems and Zenefits?
The most common shared topics between Epam Systems and Zenefits are String (2 shared questions), Stack (2 shared questions), Array (2 shared questions), Dynamic Programming (2 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Epam Systems or Zenefits?
Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. Zenefits has 5 Easy, 11 Medium, and 5 Hard questions. Zenefits has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Epam Systems and Zenefits?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 Epam Systems-specific and 15 Zenefits-specific questions to round out your prep.