Epam Systems vs ServiceNow Interview Questions
Epam Systems lists 46 LeetCode interview questions while ServiceNow lists 71. They share 21 problems — 46% of Epam Systems's bank and 30% of ServiceNow's. Focus on the overlap first, then drill into 25 Epam Systems-only and 50 ServiceNow-only questions.
Read the full Epam Systems vs ServiceNow preparation guide →
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 21 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Epam Systems and ServiceNow.
Step 2 — Company-specific depth: Add Epam Systems-specific problems like Minimum Operations to Make a Uni-Value Grid, Longest Common Prefix, Merge Sorted Array and ServiceNow-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: ServiceNow skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
21 Shared Questions
High-priority problems to practice for both Epam Systems and ServiceNow.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Move Zeroes | Easy |
| Longest Palindromic Substring | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| String Compression | Medium |
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| Generate Parentheses | Medium |
| LRU Cache | Medium |
| Pow(x, n) | Medium |
| Maximum Subarray | Medium |
| First Missing Positive | Hard |
| Reverse Words in a String | Medium |
| Reverse Linked List | Easy |
| Top K Frequent Elements | Medium |
| Kth Largest Element in an Array | Medium |
| Median of Two Sorted Arrays | Hard |
| Merge Two Sorted Lists | Easy |
Unique to Epam Systems (25)
Problems in Epam Systems's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Longest Common Prefix | Easy |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Rotate Array | Medium |
| Reverse String | Easy |
| House Robber | Medium |
| Partition Equal Subset Sum | Medium |
| Longest Consecutive Sequence | Medium |
| Reverse Vowels of a String | Easy |
| 3Sum | Medium |
| First Unique Character in a String | Easy |
Unique to ServiceNow (50)
Problems in ServiceNow's list that do not appear at Epam Systems.
Frequently Asked Questions
How many LeetCode questions do Epam Systems and ServiceNow share?
Epam Systems and ServiceNow share 21 LeetCode interview questions. 25 problems appear only in Epam Systems's list and 50 appear only in ServiceNow's list.
What topics overlap most between Epam Systems and ServiceNow?
The most common shared topics between Epam Systems and ServiceNow are Array (11 shared questions), String (7 shared questions), Hash Table (6 shared questions), Two Pointers (5 shared questions), Dynamic Programming (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Epam Systems or ServiceNow?
Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. ServiceNow has 7 Easy, 51 Medium, and 13 Hard questions. ServiceNow has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Epam Systems and ServiceNow?
Start with the 21 shared problems since they cover what both companies ask most often. Then add 20 Epam Systems-specific and 20 ServiceNow-specific questions to round out your prep.