John Ganotis
Logo of Credit Card Insider.

John Ganotis

Founder at Credit Card Insider


Silvestar is amazing. He is fast, and the work he produces is among the highest quality work I've seen from front-end engineers.

In our time working together he's been extremely reliable, with quick daily calls to give progress updates, but also having flexibility to work independently and provide updates on his progress on days when we skip those calls.

When working with Silvestar, I know that the work will be done quickly and correctly, but that he'll also point out any areas where he thinks we can improve. He's always looking out for opportunities to improve performance, maintainability, and accessibility. I get the impression that he's constantly learning and reflecting on his work, always looking for ways that he can build his skillset even more and produce even higher quality work (if that's possible!).



From Testimonials

Here are some kind words about my work from clients. Although I collaborated with clients from more than 10 countries, most of them come from The United States.


Rebecca Jacobs

Rebecca Jacobs

Marketing Manager at CodeScan

Worked with Silvestar to optimize our website! He did a great job implementing changes quickly...

Evan Lavidor

Evan Lavidor

Partner & Executive Director at BEAM Interactive

We've worked with Silvestar on several projects, and he's been a pleasure to work with...

Edo liberty

Edo liberty

Founder, CEO, and Scientist at Pinecone

Super fast and responsive, great eye for esthetics, quality web development...

Grigoriy Kogan

Grigoriy Kogan

Growth Consultant at Domino Data Lab

When I'm asked to recommend a web developer, Silvestar is the first name that comes to mind...

Adam Maschek

Adam Maschek

CTO at Westwing Home & Living

It was a pleasure to work with Silvestar. He was available on a short notice, he...

Karim Mansi

Karim Mansi

eCommerce Product Manager at Westwing Home & Living

While working a senior Product Manager at Westwing Home & Living, I had the pleasure to hire...