Barclays interview experience Real time questions & tips from candidates to crack your interview
AEM Developer
Barclays
2 rounds | 7 Coding
problems
Rejected
Interview preparation journey
Application story
I applied for the AEM Developer role through an online job portal. After submitting my application, I received an email regarding the interview process. The process included an aptitude round followed by a technical interview. After clearing the initial rounds, I attended a technical discussion where the interviewer evaluated my knowledge of AEM, Java, and web development concepts. The overall process was smooth and well organized.
Preparation
Duration: 5 months
Topics: Prepared by revising AEM concepts like Sling Models, HTL, Client Libraries, and component development, practiced Core Java, JavaScript, and basic web development concepts, reviewed my previous project work, and solved some coding problems for practice. AEM, Java, HTL, Sling Models, JavaScript, HTML, CSS, Client Libraries, REST API integration
Tip 1: Revise core AEM concepts like Sling Models, HTL, component development, and Client Libraries with practical examples.
Tip 2: Work on small projects or POCs to understand API integration, backend logic, and how AEM components interact with the frontend.
Tip 3: Strengthen core programming concepts like Java, JavaScript, and basic problem-solving before attending interviews.
Application process
Where: Company Website
Eligibility: A minimum of 2 years of experience and an engineering CGPA of at least 8 are required. (Salary Package: 10 - 12 LPA)
Tip 1: Keep your resume concise and highlight relevant experience in AEM, Java, and web technologies with clear project descriptions.
Tip 2: Mention practical work such as components developed, API integrations, and tools used so the interviewer can understand your hands-on experience.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration45 minutes
Interview date5 Dec 2025
Coding problem2
1. First non repeating character
Easy
15m average time
80% success
0/40
Asked in companies
Ninja is now bored with numbers and is now playing with characters but hates when he gets repeated characters. Ninja is provided a string, and he wants to return the first unique character in the string.The string will contain characters only from the English alphabet set, i.e., ('A' - 'Z') and ('a' - 'z'). If there is no non-repeating character, print the first character of the string. If there is no non-repeating character, return the first character of the string.
2. Longest Substring Without Repeating Characters
Moderate
30m average time
65% success
0/80
Asked in companies
Given a string input of length n, find the length of the longest substring without repeating characters i.e return a substring that does not have any repeating characters.
Substring is the continuous sub-part of the string formed by removing zero or more characters from both ends.
02
Round
Easy
Face to Face
Duration60 minutes
Interview date10 Dec 2025
Coding problem5
1. AEM Architecture
What is the architecture of AEM, and how does it work?
2. Instance Difference
What is the difference between the Author and Publish instances?
3. Sling Models
How do you call a Sling Model in HTL?
4. AEM Folders
What are the main folders used in an AEM project?
5. Dispatcher Concept
What is the Dispatcher in AEM?
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Skill covered: Programming
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