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RONI CLEI.
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Magento15 Nov 2026· 6 min read

How to choose a senior certified Magento developer to unblock your project

Look for four things: proven Magento 2 experience on real projects, a verifiable Adobe certification, the ability to explain the problem in business language, and references from people who have worked with them.

1. Magento experience, not just PHP

Magento has its own architecture: dependency injection, plugins, Service Contracts, indexers, queues, and a frontend with RequireJS and Knockout.js. A good generic PHP developer takes months to master it. Ask which versions they have worked on, what kind of store and what their role was.

2. A certification you can verify

Adobe maintains certifications for Adobe Commerce, and every credential has a public verification link. Ask for the link. Certification doesn't replace experience, but it shows formal mastery of the platform.

3. Questions that separate senior from mid-level

  • How do you find out why a page is slow?
  • When would you build a module instead of using an extension?
  • How would you integrate an ERP without blocking checkout?
  • How do you upgrade without stopping sales?
  • What would you do first on my store?

4. Communication and transparency

  • Explains risks before starting, not after.
  • Gives estimates with clear assumptions.
  • Shows what was done (commits, reports, before and after).
  • You talk directly to the person writing the code.

5. Real references

Recommendations from managers, colleagues and clients say a lot about how someone works under pressure. Prefer verifiable references, such as public LinkedIn recommendations.

About me, so you can compare

I have worked with Magento since January 2013 (starting with 1.7), have been an Adobe Certified Expert — Adobe Commerce Front End Developer since December 2019, have led frontend and backend teams, and was named architect of an enterprise marketplace on Adobe Commerce Cloud. My recommendations are public on LinkedIn.

By Roni Clei Santos

Senior Full-Stack · Adobe Certified Expert