45 Magento Interview Questions — The Interactive Quiz
Most Magento interview question lists you find online are trivia. "What is the file called env.php?""Name three areas in Magento." You can pass that quiz after a weekend and still be unable to ship a single working module.
So this one is different. Forty-five questions, four answer choices each, click to score. Each question is labeled JuniorMidSenior so you can see where the bar is. Click an option, see whether you got it right, read the short explanation, move on. Your score updates live in the bar above the questions.
Whether you are prepping for the chair or sitting on the other side of it, the goal is the same — find the gap between people who can ship in a Magento codebase and people who can recite the docs.
Answered 0 / 45·Score 0 / 0
A. Magento fundamentals
The foundation. Miss more than two and the candidate has not worked on a real store.
Question 1Junior
What is Magento at the highest level?
Question 2Junior
Which of these is NOT a real difference between Magento 1 and Magento 2?
Question 3Junior
Which is NOT one of the three main areas in Magento 2?
Question 4Junior
You need to wipe Magento caches from the command line. What do you run?
Question 5Mid
Which deployment mode would you use on a production server?
Question 6Junior
Where do you put custom modules you write yourself?
Question 7Junior
What is the preferred way to install a third-party module in 2026?
Question 8Mid
What is the difference between setup:upgrade and setup:di:compile?
B. Architecture & module structure
Past this point the candidate either gets Magento or they do not.
Question 9Junior
What are the two minimum files every Magento 2 module must have?
Question 10Mid
Which of these is a red-flag answer about Dependency Injection?
Question 11Senior
You need to change how a public method on a core class behaves — without forking it. What is the FIRST mechanism to reach for?
Question 12Mid
Which plugin type can prevent the original method from running by NOT calling $proceed?
Question 13Mid
What is the relationship between blocks, containers, and templates in Magento layout XML?
Question 14Senior
What does the @api annotation on a Magento interface mean?
C. Database & EAV
The topic candidates fake their way through. Do not let them.
Question 15Mid
What does EAV stand for, and what is the main reason Magento uses it?
Question 16Mid
Which is true about flat catalog tables in Magento?
Question 17Mid
Which indexer recomputes tier prices and tax-inclusive prices?
Question 18Senior
A customer just updated a tier price in admin. The storefront still shows the old price. What is the FIRST thing to check?
Question 19Mid
How are data patches different from the old InstallData/UpgradeData setup scripts?
D. Modules & customization
Question 20Junior
You want to change a .phtml from the Magento_Catalog module without editing vendor/. What is the cleanest way?
Question 21Mid
You need to add a new product attribute via code. What is the right tool?
Question 22Mid
Which file declares a new admin menu entry?
Question 23Mid
What is the role of etc/webapi.xml when creating a custom REST endpoint?
Question 24Senior
When is a UI component overkill?
Question 25Mid
Your module depends on Magento_Sales. Where do you declare that dependency?
E. Performance & caching
Question 26Mid
Which Magento cache type does roughly 80% of the heavy lifting on a live store?
Question 27Mid
For a production Magento store, which page cache should you use?
Question 28Senior
You add cart-count personalization to the header. Why must it use customer sections instead of a normal block?
Question 29Senior
A store is slow. Which is the WORST diagnostic step to start with?
Question 30Mid
In a multi-server Magento setup, where MUST sessions live?
F. Frontend & themes
Question 31Junior
Where does a theme declare its parent?
Question 32Junior
What is the default CSS preprocessor in stock Magento 2?
Question 33Mid
Where in Magento is Knockout.js most deeply embedded?
Question 34Senior
Which is NOT a real trade-off of going headless on Magento?
G. Admin, orders & checkout
Question 35Mid
When does a Magento quote become an order?
Question 36Senior
In Magento MSI, what is the difference between a "source" and a "stock"?
Question 37Junior
How do you ship custom order email templates as part of a module (rather than admin-only edits)?
H. Security
Question 38Mid
How does Magento 2 protect non-API forms against CSRF?
Question 39Mid
Which is NOT a real way to protect a Magento admin panel?
Question 40Senior
A Magecart-style payment skimmer has been spotted on checkout. What is your FIRST move?
I. DevOps & deployment
Question 41Mid
What is the right order for a Magento production deploy?
Question 42Mid
Which file should NEVER be committed to git?
Question 43Senior
You are cloning prod data to staging. Which is the most important step to do BEFORE devs start using it?
J. Magento ecosystem & judgment
Question 44Senior
Which is NOT a good reason to skip Magento and pick Shopify or WooCommerce instead?
Question 45Senior
You ask a candidate "what is the worst Magento bug you ever fixed?" Which is a RED FLAG answer?
Live result
0 / 45
0% correct (so far — 0 of 45 answered)
Early days
Magento is dense. Start with the fundamentals (A), then DI and modules (B), then EAV (C). The rest builds on those three.
By section
A. Magento fundamentals
0 / 8
B. Architecture & module structure
0 / 6
C. Database & EAV
0 / 5
D. Modules & customization
0 / 6
E. Performance & caching
0 / 5
F. Frontend & themes
0 / 4
G. Admin, orders & checkout
0 / 3
H. Security
0 / 3
I. DevOps & deployment
0 / 3
J. Magento ecosystem & judgment
0 / 2
A note on Magento future
Adobe Commerce Cloud, Hyva, and headless are all eating into the classic LAMP Magento stack. If you are hiring in 2026, ask about composability: have they worked with Hyva themes, with GraphQL frontends, with Adobe Commerce-as-a-service? A candidate stuck in the Magento 2.3 mental model is going to struggle on a Hyva project.
But the fundamentals — DI, plugins, EAV, indexers, FPC, MSI — have not changed. The 45 questions above are still the right list.
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