Mladen is a wizard! He has helped elevate my Shopify site to the next level with his coding experience and expertise. Things I thought could never be done due to the limitations with my store's theme, he made happen. His communication and response rate is fantastic, he is super skilled, and speaks in layman's terms so anyone can understand what he means. I only wish I knew about him years ago when I started my Shopify store! He's helped take my site to the next level and I couldn't be happier. I look forward to working with him for years to come. 10000% would recommend!
United States
Shopify Plus Agency for US Brands
Headless Hydrogen storefronts, migrations, Shopify Plus builds and custom apps for brands selling in the US, at prices published on our site. A standard headless build costs €10,000–20,000.
Shopify Plus Partner since 2017
Why US brands work with Codersy
A Shopify Plus Partner team in Belgrade, Serbia, with published prices and hours that overlap your morning.
Shopify Plus Partner since 2017
Over 500 Shopify projects, rated 5.0 on the Shopify Partner Directory. US brands such as Blocki Flute and Collegiate Knitwear Designs run on stores we built or moved to Shopify.
Prices you can see before the first call
Our prices are on the site: a store build starts from €3,000, a migration from €5,000, a standard headless storefront costs €10,000–20,000. You get a fixed quote before any work starts.
Your morning is our afternoon
Belgrade is usually six hours ahead of New York and nine ahead of Los Angeles. Calls fit East Coast mornings, and feedback you send at the end of your day reaches us at the start of ours.
What we build for US stores
The projects US brands bring to us most, each with a result from a store we built.
Headless storefronts with Hydrogen
Custom storefronts on Shopify's React framework, hosted on Oxygen at no extra charge on paid plans. Garden Delivery, a 5,000-product plant store organised by USDA hardiness zone, went from 3.2s to 1.1s load time. A standard build costs €10,000–20,000.
Migrations to Shopify
From Shift4Shop, Magento, WooCommerce, BigCommerce or Wix, with products, customers, reviews and redirects moved over. For Blocki Flute we moved 84 products and their reviews from Shift4Shop and put 255 redirects in place.
Shopify Plus builds and B2B
Plus stores with checkout extensions, B2B price lists and company accounts, and several storefronts on one codebase, as we built for Carl Friedrik across the UK, EU and US.
Custom Shopify apps and integrations
Private and public apps, and connections to your ERP, POS or 3PL when no app in the store fits. A custom app starts from €3,000.
Speed and conversion work
Core Web Vitals, theme cleanup and checkout changes, measured before and after. Ongoing optimization and support starts from €500 a month.
Shopify SEO and AI search
Technical SEO, structured data and content that Google and AI answers can quote. SEO starts from €500 a month.
How a project with a US brand runs
Discovery call
A 30-minute call in your morning. We go through your store, goals, systems and deadline, and you get a written summary afterwards.
Scope and fixed quote
A written scope with milestones and one fixed price for it. The scope does not grow without your sign-off.
Build, launch and support
A staging store from the first week, regular demos, a launch checklist covering DNS, redirects and tracking, and support after go-live.
Work for brands selling in the US
Blocki Flute
Shift4Shop → Shopify migration
Shift4Shop → Shopify migration for a US flute-teaching brand, with its teacher-training programme brought into the store
Collegiate Knitwear Designs
Shopify + affiliates
Shopify rebuild + affiliate marketing engine for a US collegiate-knitwear brand
Garden Delivery
Headless Hydrogen rebuild
Headless Hydrogen rebuild for a 5,000-product plant retailer with USDA-zone guidance
Carl Friedrik
Shopify Plus migration + headless rebuild
Shopify Plus migration + headless rebuild + B2B portal for a leather-goods brand across 10+ markets
Bodiskin
Wearable skincare Shopify storefront
Dermatologist-tested skinwear storefront for a collagen-infused apparel brand across five markets
Questions from US brands
Yes. Recent US work includes Blocki Flute, a flute-teaching brand we moved from Shift4Shop to Shopify, and Collegiate Knitwear Designs, a college-knitwear store we rebuilt with an affiliate program. We also built the US storefront for Carl Friedrik, and Bodiskin sells to the US from a store we built. Codersy has been a Shopify Plus Partner since 2017.
We publish our prices in euros. A Shopify store build starts from €3,000, a custom theme built from your own design from €8,000, and design plus custom theme by us from €9,000. A migration from another platform starts from €5,000, and a standard headless Hydrogen storefront costs €10,000–20,000. Shopify Plus builds are quoted per project: you get a fixed price after the discovery call. See our pricing.
Belgrade is usually six hours ahead of the East Coast and nine ahead of the West Coast. We hold calls in your morning, share progress in writing and give you a staging store to review. Feedback you send at the end of your day reaches us at the start of ours.
Yes. Most US stores use Shopify Tax, which calculates sales tax by address. It is free until a store reaches $100,000 in US sales (per calendar year for stores created before May 13, 2026, lifetime for newer ones), then costs 0.35% of US orders where tax is collected, or 0.25% on Shopify Plus. Your accountant decides where you have nexus; we set up collection to match.
Not always. Plus costs from $2,300 a month on a three-year term ($2,500 on one year) and pays off when you need B2B, checkout customization, several storefronts or high order volume. Many US brands run well on Basic, Grow or Advanced. We tell you which plan fits after looking at your numbers.
When the theme holds the store back: a design a Liquid theme can't do, a large catalog where speed costs sales, or content from a CMS. A standard Hydrogen storefront costs €10,000–20,000 and takes about 9–10 weeks; for most smaller stores a well-built theme is the better buy. See headless Shopify development.
Trusted by Industry Leaders
5.0 from 22 Shopify Partner Directory reviews
- 500+ projects
- 35+ industries
- 98% client retention
- Shopify Plus partner since 2017
Honestly, we had a really great experience working with this team. From the very beginning, they showed a lot of patience and understanding for all of our ideas, even when we weren’t always sure how to explain things clearly. What pleasantly surprised us the most is that they didn’t just do what was asked — they often suggested improvements and solutions we hadn’t even considered. In many cases, they put in extra time and effort just to make sure the website turned out better, more functional, and easier for customers to use. Communication was smooth and quick, and everything we agreed on was delivered without complications. In the end, we got a website that not only looks professional, but also feels simple and intuitive — which was the most important thing for us. Highly recommended.
★★★★★We had custom coding on our theme and we had trouble translating it and the prices in our currencies did not show up properly either Mladen Terzic did the work for us very quickly and all is working now fine, so many thanks!!
Barista och Espresso★★★★★Codersy did an excellent job for us. We finished the first project fairly quickly and will be using them for the second phase as well. Would definitely recommend.
LGi Linens★★★★★Working with the Codersy team was a rare and truly positive experience in every sense – professionalism at the highest level. Building the Blossom Aromatherapy website with this team was smooth and enjoyable. From the very first communication to the final version of the site, everything was handled with precision, dedication, and a deep understanding of the brand. I would especially highlight: excellent organization and full respect for all agreements a strong understanding of the brand’s aesthetics and core values technical excellence of the Shopify website patience, flexibility, and clear communication at every step The result is a website that looks professional, clean, and fully aligned with our vision, while also functioning flawlessly for sales. Without hesitation — a strong recommendation to anyone looking for a serious, high-quality, and long-term sustainable Shopify website. We will definitely continue our collaboration on future projects.
★★★★★Mladden and his team have done an excellent job on our Headless Shopify site so far. As an SEO guy, I needed control over things that Shopify set by default and they were the only people who could solve this problem. They have built a nice website that we continue to improve on and can't wait to see the finished product.
★★★★★Excellent work delivered — highly recommend his services. If I had to describe it in one word: efficiency
★★★★★Mladen and his team did an amazing job upgrading my old theme (2.5.0) to the latest Dawn 15.4.0. They were super easy to work with, very quick to get things done, and made the whole process smooth from start to finish. I’m really happy with the result and would highly recommend them to anyone looking for reliable theme upgrades or Shopify work.
Chair Caps Australia★★★★★Amazing work! always providing a solution
★★★★★Codersy has been a reliable and prompt partner for our Shopify store. They’ve helped us build custom solutions that fit our needs and are always quick to respond when issues come up. Most recently, they tackled a critical site problem and resolved it in a timely way, which gave us a lot of confidence in their ability to handle important challenges. Highly recommend their team!
★★★★★
Amazing partner and amazing experience. Absolutely recommend!
★★★★★Codersy has been a huge help with fixing our tracking issues on our headless shopify story. Great to work with and very knowledgable. Highly recommend!
Fern & Petal★★★★★Great team to work with, solution oriented and great ability to customize in the Shopify environement
★★★★★Mladen did an outstanding job improving my product page. He significantly enhanced the structure and layout, implemented a number of smart solutions that led to a noticeable increase in conversion rates, and also carried out general optimization work across the website. He identified and fixed multiple performance issues, which resulted in a much faster and smoother user experience. I’m very satisfied with the results and highly recommend working with him. A true professional!
Keys to Health★★★★★Codersy built our Shopify store from scratch and did an incredible job. The site looks amazing, runs smoothly, and perfectly fits our brand. Super easy to work with, always responsive, and genuinely care about the result. Highly recommend for any Shopify project!
Muška Odela★★★★★Clear communication and very professional team.
Artisio★★★★★Codersy built our Shopify website from the ground up, and we couldn’t be more satisfied! Their expertise, attention to detail, and commitment to delivering a high-performing, visually stunning store exceeded our expectations. From seamless UX/UI design to flawless custom features, every aspect of our store was crafted with precision. The team at Codersy was responsive, professional, and truly understood our vision. They optimized our store for speed, SEO, and conversions, ensuring we had the best possible foundation for growth. If you’re looking for a top-tier Shopify agency, look no further—Codersy is the real deal! 🚀
Wonderly★★★★★Been working with Codersy for a long time - they've been a great support and asset to our company.
Carl FriedrikNiklas Oppermann, CEO, Carl Friedrik★★★★★Codersy successfully delivered a unique platform for our secondary market business. Their expertise and on-time delivery speaks volumes about their skillset. Highly recommend to anyone requiring Shopify development.
SecondShopAdam Froese, Founder, SecondShop★★★★★I found them to be intelligent, patient, skilled, and overall nice people to work with. They made the entire process of building our Shopify store smooth, easy, and with minimum hiccups. 10 out of 10, highly recommend you work with Codersy!
UnstrapNav Lajli, CEO, Unstrap★★★★★
Planning a Shopify project for the US market?
Book a 30-minute call. We look at your store, goals and stack, and follow up with a written summary and a fixed quote.
Rated 5.0 from 22 client reviews on the Shopify Partner Directory (opens in a new tab)