WatchGuard Technologies interview experience Real time questions & tips from candidates to crack your interview
Full Stack Engineer
WatchGuard Technologies
3 rounds | 8 Coding
problems
Rejected
Interview preparation journey
Journey
WatchGuard Technologies is a global leader in network security, endpoint security, secure Wi-Fi, and multi-factor authentication. The company came to our college in April and conducted three rounds to select the students. These rounds included an Online Technical Test, a Technical Interview, and an HR Interview. All the rounds were elimination rounds.
Application story
I applied through the on-campus drive in Watchguard Technologies. It conducted three rounds to select the students. These rounds included an Online Technical Test, a Technical Interview, and an HR Interview. All the rounds were elimination rounds. I cleared the Online Technical Test, but I couldn't clear the Technical Interview as the interviewer was focused on Java and didn't have much knowledge of Java.
Why selected/rejected for the role?
I was rejected for the role during the technical interview as the interviewer focused more on Java, and I didn't have much Java knowledge then. Also, I got a bit nervous as that was my first interview.
Preparation
Duration: 4 months
Topics: Data Structures, Operating System, Java, Database, System Design
Tip 1: Practice Java coding questions as the company is Java-based.
Tip 2: Must have deep knowledge of the operating system
Tip 3: Have complete knowledge of the projects mentioned in the resume
Application process
Where: Campus
Eligibility: 8 CGPA, with no backlogs
Tip 1: It is better to have Java projects on the resume
Tip 2: You should have something extra-ordinary, which could differentiate you from others
Interview rounds
01
Round
Easy
Online Coding Test
Duration60 mins
Interview date10 Apr 2021
Coding problem3
This round was conducted at 12 p.m. on the HackerEarth platform and comprised 60 MCQs from the operating system, system design, database, and Java. I solved 50 questions out of 60 and cleared the test.
1. OS Questions
Problem approach
Tip 1: Study the MCQs from different websites available
Tip 2: Should have deep knowledge of the operating system
2. Java Questions
Problem approach
Tip 1: Study the MCQs from different websites available
Tip 2: Should have Java knowledge
02
Round
Hard
Video Call
Duration45 mins
Interview date12 Apr 2021
Coding problem4
This round was conducted on Microsoft Teams at 10 a.m. There were 3 interviewers out of which only 2 were actively asking the questions. The interview was mostly based on Java questions.
1. Reverse Linked List
Moderate
15m average time
85% success
0/80
Asked in companies
Given a singly linked list of integers. Your task is to return the head of the reversed linked list.
For example:
The given linked list is 1 -> 2 -> 3 -> 4-> NULL. Then the reverse linked list is 4 -> 3 -> 2 -> 1 -> NULL and the head of the reversed linked list will be 4.
Follow Up :
Can you solve this problem in O(N) time and O(1) space complexity?
Problem approach
Step 1: Create three pointers: current, previous, and next. Initialize current with the head of the linked list and set both previous and next to null.
Step 2: Iterate through the linked list while the current is not null. Inside the loop, do the following:
1) Set next as the next node of current.
2) Reverse the link of the current by pointing it to the previous node.
3) Move previous to current and current to next.
Step 3: Finally, update the head of the linked list by setting it as previous, which will now be pointing to the last node of the original linked list.
3. OOPs Question
Can you write code to explain each type of inheritance? (Learn)
Problem approach
Write a single example explaining all types of Inheritance- Single, Hierarchical, Multilevel, and Hybrid
Don't forget to write Multiple Inheritance through Interface
4. OS Questions
Do you know Banker's algorithm? Explain it. (Learn)
Problem approach
Tip 1: Study Banker's Algorithm in detail
03
Round
Easy
HR Round
Duration20 mins
Interview date20 Apr 2021
Coding problem1
This round was conducted on Microsoft Teams and was just 20 minutes long.
1. Basic HR Questions
Give your introduction.
What are your strengths and weaknesses?
Where do you see yourself after 5 years?
Who inspired you in your life and why?
Do you have any other offers in hand?
Any questions from me?
Problem approach
Tip 1: Answer with complete confidence
Tip 2: Describe everything mentioned in the resume
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is recursion?
Choose another skill to practice
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