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The shopexperts score helps you assess an expert’s credibility. We verify every signal that contributes to the score.
The shopexperts score helps you assess an expert’s credibility. We verify every signal that contributes to the score.
English, Spanish, Bulgarian
Shopify Performance & Front-end Developer | 10+ Years Building Fast, Custom Stores
I’ve spent over 10 years building, customizing, and speeding up Shopify stores for brands of all sizes. I build custom themes and apps, fix slow pages, improve how a store looks and works on desktop and mobile, and handle Shopify Plus checkout customization with Functions. I care about work that is reliable on launch day and still holds up months later, so I stay available after delivery. Proud father of Radost.
What I do
Custom themes, apps, and front-end features, built to fit your store
Shopify Plus Functions and checkout customization
CRO & Speed optimization and Core Web Vitals, including advanced CLS fixes
UX improvements that make your products easier to find and buy, on desktop and mobile
What sets me apart
Reliability. Good development doesn’t end at launch, so I stay available for support, improvements, and fast problem-solving. Clients get one person who knows their store and answers quickly, before and after delivery.
Free Store Quick Look
Send me your store link and within 3 business days I’ll send a one-page summary covering:
Your biggest speed problem, explained in plain language
A first look at your apps: how many are installed, what looks wrong, and which ones could be replaced with custom theme code
Three things on your mobile shopping path that I would fix first, each with a screenshot
It’s free, there’s no commitment, and I change nothing on your store. If you’d like the issues fixed, we go ahead step by step: I confirm the scope, and you approve each step. I take a limited number each week, for established stores.
Canvas services (new Shopify feature)
Canvas store-build sprint
For new launches and smaller merchants who want a custom store fast.
Kickoff call to define your brand, products, audience, and goals
AI-assisted design direction: I write the brief and guide Sidekick in Canvas, then refine the result with direct edits and QA
Responsive QA on mobile, tablet, and desktop, covering product, collection, cart, and checkout flows
Core Web Vitals and layout shift check before launch
Launch, walkthrough, and a post-launch support window of 14 days
Working with me
Whether it’s a full store build, advanced customization, a Canvas build, or performance tuning, you get clear communication, consistent quality, and dependable support. Not sure where to start? Send me your store link for a free Quick Look.
Deyan Chernogorski is a freelance Shopify developer based in Bulgaria. He specializes in custom theme development, Shopify app development, and Shopify Functions, with a particular focus on speed performance optimization and Core Web Vitals improvements. His services also include UI/UX enhancements, store audits, and ongoing support. Reviews highlight his quick delivery, clear communication, and strong technical expertise. He appears to work with a range of merchants, from first-time store owners to established international brands, and is noted for providing reliable, high-quality work.
Deyan Chernogorski's business address
Ruse, Bulgaria
Gen. Dragomirov 3, Byala, Rousse, Bulgaria
Across 68 client reviews, customers consistently praise Deyan for his fast delivery, clear communication, and high-quality work. Reviewers frequently highlight his ongoing support and technical expertise, along with his ability to understand requirements and maintain professionalism. The overall rating of 4.94 reflects consistent satisfaction with his services.
1-10 out of 74 reviews
This client was hired on shopexperts.
This review was posted voluntarily by the client.
Deyan is great all round, communication wise, time wise and always helps us create what we are envisioning. Would highly recommend.
This client was hired on shopexperts.
This review was posted voluntarily by the client.
Fast, straightforward service and always great quality. Everything was easy to deal with and delivered quickly.
This client was hired on shopexperts.
This review was posted voluntarily by the client.
Deyan is incredible. His customer service is impeccable, and he constantly delivers quality results every time. I never have to worry about the project not being completed exactly as expected in a timely fashion. Could not recommend anyone else but Deyan!
This client was hired on shopexperts.
This review was requested by the expert.
I’ve had the pleasure of working with Deyan for the past two years, and I can confidently say he is one of the best Shopify developers we’ve worked with. Deyan built both of our Shopify stores and has been an incredible partner throughout the entire process. He is extremely knowledgeable, professional, responsive, and always available whenever we have questions or need support. No matter how complex the challenge, he always finds a solution that is tailored specifically to our business instead of offering a generic approach. What I appreciate most is his attention to detail and the confidence he gives us. Every project feels organized, every task is carefully thought through, and you always feel like everything is under control. He is proactive, patient, and genuinely cares about delivering the best possible outcome. If you’re looking for someone who truly understands Shopify, is easy to work with, and consistently goes above and beyond, I couldn’t recommend Deyan more highly. We look forward to continuing to work with him as our business grows.
This client was hired on shopexperts.
This review was requested by the expert.
I have worked with Deyan on a number of projects for our Shopify site - he has been great with completing our projects quickly and efficiently. We usually jump on a quick video call which is super helpful to discuss the project - he gives us a cost and timeline - and he delivers super quickly - would highly recommend - 10 stars for sure!
This client was hired on shopexperts.
This review was requested by the expert.
Great service, fast communication and explained steps clearly. Very good customer service, will be using again for future work. Thank you for all the help.
This client was hired on shopexperts.
This review was requested by the expert.
I've been working with Deyan for a long time. He's always helped me fast and professionally, with new updates as well as fixes to problems with my theme. I am surprised how well he understands my customizations, and when he looks into problems, everything works fine after. I cannot describe how much customizations I have in my theme, therefore I'd give him not only 5 stars; in my opinion and based on my experience, I'd give him 7 stars. Many regards from Germany.
This client was hired on shopexperts.
This review was requested by the expert.
I’ve worked with Deyan from Shopexperts for over three years, since joining La Residence Interiors, and he has offered invaluable support with the functionality of our website. He has helped us deliver a wide range of website improvements, from custom-coded features to complex projects dealing with third-party app integrations. No matter the scope of the project, Deyan consistently delivers high-quality work, often ahead of schedule, and is always clear and straightforward in his communication. I wouldn’t hesitate to recommend Deyan to anyone looking for a developer.
This client was hired on shopexperts.
This review was posted voluntarily by the client.
Deyan came through once again for us! All work was completed as promised and ahead of schedule. Many thanks!
This client was hired on shopexperts.
This review was posted voluntarily by the client.
Deyan is an outstanding developer and he's continued to help our team bring our project to life. He's been able to execute on every idea we've had. He's incredibly knowledgeble and always provides stellar work. We will always work with Deyan for future projects!


