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ServiceNow Software Engineer Interview Experience

Software Engineer

ServiceNow
June 11, 2025
15 Questions
Selected

Summary

AI Powered

The ServiceNow Frontend Software Engineer (IC2) interview process was quite extensive, involving multiple rounds and a mix of technical problem-solving. The first round focused heavily on JavaScript concepts and included questions on output interpretation, event loop mechanics, and basic algorithmic challenges. Subsequent rounds introduced system design discussions, demonstrating a need for both technical proficiency and design thinking. Overall, the interview experience at ServiceNow is rigorous, emphasizing strong coding skills, design principles, and a solid understanding of web technologies.

1

ROUND 1: Technical Discussion & Problem-Solving

#1

JavaScript Output Questions

What will be the output of the following JavaScript questions? Discuss aspects like hoisting, Temporal Dead Zone, and Arrow functions.
javascript
output-based
Medium
#2

Browser Load Sequence

Explain the rendering sequence of an HTML page from start to finish. How is the script tag executed when running?
web-development
browser
Medium
#3

Async vs Defer Attributes

What is the difference between the async and defer attributes in script tags?
javascript
web-development
Easy
#4

Event Loop Explanation

What is the event loop in JavaScript? How does it relate to the execution of asynchronous code?
javascript
asynchronous-programming
Medium
#5

Microtask vs Macrotask

Differentiate between microtasks and macrotasks in JavaScript. Provide examples of each.
javascript
asynchronous-programming
Medium
#6

Promise Output Sequencing

What would be the output of a sequence of operations involving promises? Discuss how microtasks fit into this scenario.
javascript
promises
Medium
#7

Debounce and Currying Polyfills

Implement polyfills for both debounce and currying functions in JavaScript.
javascript
Medium
#8

Two-Way Data Binding in Angular

What is two-way data binding in Angular? How is it implemented?
angular
Medium
#9

Manipulating JSON Objects

Given a problem statement regarding the manipulation of a JSON object, discuss how to achieve the desired output.
javascript
json
Medium
2

ROUND 2: Technical Discussion & Problem-Solving

#1

Asynchronous Loop Output

What will be the output of the following code? Analyze the implications of the setTimeout function on the variable 'i'.
javascript
output-based
Medium
javascript
function foo() { for (var i = 0; i < 10; i++) setTimeout(() => console.log(i), 1000); } foo();
#2

Debounce Function Implementation

Implement a function to debounce another function by creating a polyfill.
javascript
coding
Medium
#3

Currying Function Implementation

Implement a currying function which allows you to transform a function into a series of functions each taking a single argument.
javascript
coding
Medium
#4

Maximum Size Square Sub-Matrix

Given a binary matrix, find the maximum size square sub-matrix that contains all 1s. For example, given the binary matrix: 0 1 1 0 1 1 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 1 1 1 1 0 0 0 0 0 what would be the output?
dynamic-programming
matrix
Hard
#5

Distinct Ways to Climb Stairs

You are climbing a staircase. It takes n steps to reach the top, and you can take either 1 or 2 steps at a time. In how many distinct ways can you climb to the top?
dynamic-programming
stairs
Medium
3

System design

#1

HLD and LLD for Autocomplete Component

Provide a High-Level Design (HLD) and Low-Level Design (LLD) for an Autocomplete component. Ensure the solution is scalable and modular, considering key system design features. Respond to functional, non-functional requirements, and data flow.
system-design
components
Medium
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r

ritwik chakraborty

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ServiceNow Software Engineer Interview Experience | InterviewRecap | InterviewRecap