Backend AEM Developer Interview Questions and Answers

Scenario based Questions - Component is missing on publish but present on Author what do you check to diagnose the issue

Scenario based Questions - Content Fragment not appearing in search. what do you check to diagnose the issue

Scenario based Questions - Blueprint change not reflecting. what do you check to diagnose the issue

Scenario An author publishes a page and can see it on the publish instance directly (port 4503), but it's still showing the old version via the website URL (through Dispatcher). What steps do you take

Scenario based Questions - Image works on author but broken on publish. what do you check to diagnose the issue

Scenario based Questions - A DAM update workflow was working yesterday but stopped triggering today. No code changes were deployed. Where do you look

Scenario based Questions - A developer registers a Sling Servlet by resource type but gets a 404 when hitting the expected URL. The bundle is active in the OSGi console. What do you check

Scenario based Questions - A new OSGi service is null at runtime even though bundle is active. What might be the reason for this?

After a routine Service Pack update, authors report the AEM author login page takes 45 seconds to load. The instance was fast before the update. What do you investigate

how to set up shared components for multiple sites and some sites have specifications for certain shared components.

how easy to migrate from aem 6.5 to aem as a cloud service

What is the difference between a Component and a Template in AEM

What is a ClientLib in AEM and how do you include CSS JS through it

How does the HTL (Sightly) templating language differ from JSP in AEM

could you please explain your tech stack of AEM in your previous company pertaining to the current role

How do you secure the Dispatcher

What's the difference between /cache/rules and /cache/invalidate

Tell me about a Dispatcher performance issue you've solved

cache invalidation using cache invalidate and statfileslevel

Walk me through the structure of dispatcher.any (or the AEMaaCS dispatcher config

what is JCR and explain its hierarchy

How do you approach working with a legacy AEM codebase that has poor documentation and inconsistent patterns

What would your first 90 days look like in this role

fully headless architecture vs traditional coupled approach in aem

what do you mean by technical debt in aem codebase

Tell me about a difficult technical decision you had to make and defend.

How do you identify and manage technical debt in a large AEM codebase

Describe a time you had to communicate a complex technical decision to a non-technical stakeholder

Tell me about your experience mentoring developers. How do you approach it

How do you ensure WCAG 2.0 AA compliance in an AEM implementation

How do you architect integrations between AEM and external systems like MuleSoft

How have you implemented headless content delivery in AEM

Explain your approach to caching strategy across the full stack

Walk me through how you approach AEM architecture for a multi-brand, multi-site implementation

Why this role, and why Saatchi Saatchi specifically

Tell me about yourself and walk me through your AEM background.