Shopify Developers for Builds That Have to Hold
SDG is a Shopify Platinum Partner staffed by senior Shopify developers, building on the platform since 2006. From a single custom feature to a headless storefront, the engineers who scope your work are the ones who ship it.
Trusted by brands that define their categories
Senior Shopify developers, not a junior pool
Most agencies sell senior talent and staff the actual work with juniors. We don’t. Every SDG engagement is built by experienced Shopify developers who have shipped on the platform for years, across some of the largest catalogs and most demanding launches in commerce. There are no hand-offs and no learning on your budget.
Theme, custom, and headless development
We work the full range of Shopify development: Liquid theme work and customization, fully custom front-ends, custom Shopify apps and checkout extensions, and headless and composable builds on Hydrogen, Oxygen, and React. Whatever the architecture, performance, reliability, and accessibility are engineered in as a baseline, not bolted on later.
Developers who own the outcome
We take on focused, single-scope development tasks as readily as multi-month enterprise builds, and many clients keep us on retainer for ongoing work. See how this plays out in our case studies, or explore our Shopify Plus practice.
Everything your store needs, from one senior team
SDG is a full-service Shopify partner. The same senior engineers and designers behind enterprise replatforms also take on focused projects, ongoing support, and everything in between — for brands large and small. One accountable team, end to end.
Strategy & architecture
Roadmaps, technical architecture, and platform decisions grounded in nearly two decades on Shopify.
UX/UI design
Brand-led storefront design and interface work, engineered to convert as well as it looks.
Storefront development
Theme and fully custom front-end builds, from a single template to a complete storefront.
Headless & composable
Hydrogen, Oxygen, and custom React storefronts engineered to hit performance budgets others miss.
Replatforming & migrations
Moves onto Shopify and Shopify Plus without downtime or data loss, including the largest catalogs in retail.
Systems & data integration
ERP, OMS, PIM, CRM, and bespoke middleware — the back-office systems global retail runs on.
Performance engineering
Core Web Vitals, speed, and reliability treated as a baseline, not an afterthought.
Shopify SEO
Technical SEO, site architecture, and structured data so the right buyers find your store.
CRO & experimentation
Conversion-rate optimization and A/B testing that turn existing traffic into more revenue.
Support & retainers
Ongoing monthly support, maintenance, and enhancement — a senior team on call for your store.
Accessibility
WCAG-compliant builds and audits, so your storefront works for every customer.
Apps & custom functionality
Custom Shopify apps, checkout extensions, and bespoke features the platform doesn’t ship out of the box.
Frequently asked questions
What does a Shopify developer do?
A Shopify developer builds and customizes stores on Shopify and Shopify Plus: theme and front-end development, custom apps and checkout extensions, integrations with back-office systems, performance work, and headless builds. SDG covers all of it with senior engineers.
Do you do custom and headless Shopify development?
Yes. We build fully custom storefronts and headless/composable commerce on Hydrogen, Oxygen, and custom React, engineered to hit performance budgets most teams never reach.
Should I hire a freelance Shopify developer or an agency?
A freelancer can be right for a quick fix. For anything mission-critical, a senior team gives you design, development, integration, and support under one roof, with continuity and accountability a single contractor can’t match.
Do you take on small development tasks?
Yes. We size each engagement to the actual work, from a single feature or bug fix to a complete custom build. Many clients start small and keep us on retainer.
What Shopify technologies do you work with?
Liquid, Hydrogen, Oxygen, React, the Shopify Admin and Storefront APIs, custom apps, and integrations with ERP, OMS, PIM and CRM systems.
Do you offer ongoing development support?
Yes. We provide monthly retainers for ongoing development, maintenance, and enhancement long after launch.