PagerDuty Interview Questions

Note: ensure you read the disclaimer on the previous page reading the accuracy and sourcing of these problems.

Binary Tree Inorder Traversal

Can you write a function to traverse a binary tree **in order**, and print out the value of each node as it passes? 4 5 6 The example would output 4, 6, 5 since there is no left child for 4 , and 6 is visited in order before 5 . The definition of a tree node i...

Difficulty: 3/10

Max Leaps in Jump Game

We have an array that model square blocks on a city street. On each block is a non negative whole number. Ever heard of hopscotch? Picture that as an array: 1, 3, 2, 2, 1 Now, in hopscotch, you need to jump in patterns from the start to the end of the boxes. We can model that behavior in the...

Difficulty: 5/10

Implement the Trie Data Structure

Suppose you're asked during an interview to design an autocompletion system. On the client side, you have an input box. When users start typing things into the input, it should parse what's been typed and make suggestions based on that. For example, if the user has typed "cat", we may fetch "c...

Difficulty: 7/10

Two Sum from BST

This problem is a fun combination of the famous Two Sum problem combined with a binary search lessons binary search technique tree. Given the root of a binary search lessons binary search technique tree, and a target integer K , return true if there exist two nodes in the said tree...

Difficulty: 7/10

Flood Fill Paintbucket

Imagine the implementation for the paintbucket feature in Microsoft Paint, or how certain image filters work. You click on a specific pixel on a screen, and every similar colored neighboring pixel would change to your selected color. Let's implement a simpler version of that feature. You're gi...

Difficulty: 7/10

Implement a Hash Map

Arrays are amazing for looking up elements at specific indices as all elements in memory are contiguous, allowing for O 1 or constant time lookups. But often we don't, or can't, perform lookups via indices. Hash maps and hash tables are a way around this, enabling us to lookup via keys instead. ...

Difficulty: 3/10

Most Strongly Connected

You're given the following multi dimensional array matrix: js const matrix 1, 1, 0, 0, 0 , 0, 1, 1, 0, 0 , 0, 1, 0, 1, 0 , 1, 0, 0, 0, 0 Could you find the largest concentration of connected 1 s in the matrix? Write MostConnectedOnes matrix: array class o...

Difficulty: 8/10

Sum Digits Until One

We're provided a positive integer num . Can you write a method to repeatedly add all of its digits until the result has only one digit? Here's an example: if the input was 49 , we'd go through the following steps: start with 49 4 9 13 since the previous addition was 13, move ont...

Difficulty: 4/10

Treats Distribution

Say we are given an integer array of an even length, where different numbers in the array represent certain kinds of snacks or treats. Each number maps to, or represents, one kind of snack. So the following array would have two kinds: snack type 3 and type 2 : js const snacks 3, 3, 2, 2 ...

Difficulty: 4/10

Design an Observability Monitoring System

A Comprehensive Guide to Designing a Monitoring System for Infrastructure and Applications Introduction: The Why and What of Monitoring Systems Monitoring systems play an indispensable role in the modern engineering landscape, acting as the eyes and ears for engineers. A robust monitoring sy...

Difficulty: 5/10

Data Monitoring and Performance Optimization

Introduction to Data Monitoring Data monitoring is a critical aspect of the data engineer's role. It involves tracking, analyzing, and managing data to ensure its accuracy, reliability, and timeliness. By monitoring data, engineers can identify potential issues, detect anomalies, and take proact...

Difficulty: 5/10

Object-Oriented Programming in C#

Introduction to Object Oriented Programming Welcome to the world of Object Oriented Programming OOP ! In this lesson, we will provide an overview of OOP concepts and explain why they are important in C . What is Object Oriented Programming? Object Oriented Programming is a programming pa...

Difficulty: 5/10

Interview Reports

27 PagerDuty, Inc. Interview Questions (with Answers)...

Practice 27 PagerDuty, Inc. Interview Questions with professional interview answer examples with advice on how to answer each question. With an additional 54 professionally written interview answer ex...

PagerDuty Interviews | Comparably...

18 PagerDuty employees rate their interview experience an A or 88/100. 100% believe the overall process was positive.

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People at PagerDuty Say

This information was sourced from reviews originally posted on Glassdoor.

The culture is very welcoming and everyone is willing to help you with questions you may have.

Most PD employees are super nice and in general the company has tons of emotional intelligence.

Amazing team and leadership. The management genuinely takes the time to get feedback from employees and improve. The company culture is pretty awesome and there are a lot of opportunities to work on interesting engineering problems. Good Work Life Balance.

A wonderful culture where you get supported and are expected to do the same. They seem to be very willing to try and fail, and if it's a failure they try to learn from the experience. They're also incredibly diverse and very modern in their thinking. I love the fact that they follow they've given 1% of their equity, 1% of their employees time and 1% of their product to charitable causes. They also really do put the customer first which is what most organizations say but PD really does. I also really do appreciate the fact that they're willing to have remote employees and allow folks who are working at an office turn to remote working as well.