Ernesto Castellano Arvostelua 

We were referred to Ernesto by our Google Ads manager as we had some detailed design and functionality changes that we needed made to our website. Ernesto outlined a solution immediately and completed the work within a speedy timeframe. We have since spent the last four months working with Ernesto on individual page designs, website audits and improvements to the usability and functionality of the overall website. His task planningis very detailed and he is very accurate in time needed to complete tasks which makes tracking his progress extremley easy. Ernesto has such a broad knowledge of everything to do with shopify and his design eye is spot on to our brand.

We have now engaged Ernesto on a monthly retainer for our website design and added newsletter marketing design and management as an additional program. Already the stress that has been removed from our team to do these tasks cannot be quantified.

The difference in our ability to run our online business and three retail stores without these tasks being done ourselves has been a game changer thanks to Ernesto.

Highly recommend!

We brought Ernesto on to help develop our Shopify/Webkul marketplace at Used Creative, and he's been brilliant: clear communication from day one, hit his delivery targets, and consistently went beyond the brief — fixing bugs, improving UX, exporting data when we needed it fast, and jumping on ad hoc requests without complaint.

He works well remotely, integrates into a team easily, and understands the pressures of a fast-moving startup. Already planning Phase 2 with him. Highly recommended.

We hired Ernesto for a scoped Phase 1 fix on our Shopify marketplace and he exceeded expectations in every way.
What stood out most was his approach to problem-solving. Rather than just working through the agreed list, he flagged issues we hadn’t spotted, made proactive recommendations, and went noticeably beyond the original scope. That kind of initiative is rare and made a real difference to the outcome.
He’s also straightforward to work with. Clear communication, no hand-holding required, and the kind of person who takes ownership rather than waiting to be told.
We’ll absolutely be working with him again. If you’re running a Shopify build, especially with Webkul Multivendor Marketplace in the mix, Ernesto is worth contacting.

A world-class Shopify developer with exceptional communication skills. Proactive, reliable, and an all-around good bloke.

Ernesto consistently turns complex development challenges into intuitive, merchant-friendly solutions, while maintaining clear, proactive communication and a high level of accountability.

Beyond his technical ability, he truly excels in client management. He keeps us informed at every stage and makes the entire process smooth and collaborative.

I’d confidently recommend Ernesto to anyone looking for an excellent developer and look forward to working together on many more projects in the years ahead.

Ernesto is hands down the best Shopify developer and designer I've worked with.

Finding someone who delivers exceptional work is one thing. Finding someone who's also reliable, professional, and genuinely great to collaborate with? That's rare.

Ernesto checks every box.

If you need a Shopify web expert who actually gets it done right, I can't recommend him enough!

Ernesto is a great communicator, explains things extremely well and has been amazing value for money for what he has delivered for the projects we have worked on together. I don't take recommendations lightly... in fact I hardly ever give them out but I would definitely recommend Ernesto for anything Shopify Dev related without hesitation.