Top 10 Shopify Development Companies in St. Louis | 2026

Shopify has become the default commerce platform for a reason. It’s fast to launch, reliable at scale, and backed by an ecosystem that continues to expand. But the platform only takes you so far that what separates a high-performing Shopify store from a mediocre one is almost always the quality of the development behind it.

In St. Louis, a handful of agencies have built genuine Shopify expertise. Others list it as a capability without the depth to back it up. This guide identifies the ten companies worth considering, evaluated not just on whether they build Shopify stores, but on how well they build them and what they’re capable of delivering beyond a basic theme setup.

Whether you’re launching a new store, migrating from another platform, or scaling an existing operation that’s outgrown its current setup, the right Shopify partner makes a measurable difference.

Shopify development ranges from theme configuration to fully custom Shopify Plus builds with complex backend integrations. The criteria below reflect that full range because businesses at different stages need different things from a development partner.

Here’s what shaped every ranking on this list:

Shopify Plus experience – Advanced features, B2B commerce, automation, and high-volume transaction handling

Custom theme & storefront development – Building beyond off-the-shelf templates for brand-specific experiences

App & API integrations – ERP, CRM, inventory, payment gateways, and third-party platform connections

Migration expertise – Moving stores from Magento, WooCommerce, BigCommerce, or custom platforms without data loss or SEO damage

Conversion rate optimization – Design and UX decisions tied to actual commerce performance metrics

B2B Shopify capabilities – Account pricing, net terms, wholesale portals, and custom checkout flows

Post-launch support – Ongoing development, performance monitoring, and iterative improvement

Local St. Louis presence – Ability to serve regional businesses with direct communication and accountability

Digital Radium is a Shopify-focused ecommerce development company serving retail brands, D2C businesses, manufacturers, B2B organizations, and wholesale distributors across St. Louis and nationally.

Their Shopify work spans the full development spectrum: 

• Custom theme development
• Shopify Plus implementations
• Store migrations from legacy platforms
• ERP and CRM integrations
• Payment gateway setup
• Custom checkout development

They build B2B Shopify portals with account-based pricing, net terms workflows, and bulk ordering functionality, and develop omnichannel commerce architectures for businesses selling across multiple channels.

Beyond the build, Digital Radium’s post-launch work covers conversion rate optimization, ecommerce analytics, mobile performance, and ongoing store development. Their integration depth connecting Shopify to inventory management systems, ERPs, CRMs, and custom APIs makes them particularly strong for businesses with operational complexity that a standard Shopify setup can’t address out of the box.

For businesses that need more than a configured theme and a development partner capable of building and scaling a serious Shopify operation, Digital Radium is the most technically complete option among Shopify development companies in St. Louis.

Beanstalk Web Solutions offers Shopify development as part of their broader web design and digital services practice. They work primarily with small to mid-sized St. Louis businesses and are known for clean execution and dependable project timelines.

Their Shopify work suits businesses that need a functional, well-designed store without heavy customization or complex integration requirements, a solid entry-level option for local retailers and service businesses launching their first Shopify presence.

Integrity is a St. Louis experience design and digital agency with UX-led capabilities that extend into ecommerce and Shopify development. Their strength is in user experience design making them a reasonable fit for brands that want their Shopify store to feel deliberately crafted rather than template-driven.

Their approach suits mid-market businesses where design quality and brand alignment are primary concerns alongside commerce functionality.

Hexxen is a St. Louis digital agency with web design and development capabilities that include Shopify work. Their focus on visual design and front-end quality makes them a reasonable option for consumer brands where storefront aesthetics and presentation are primary requirements.

Best suited for businesses with straightforward Shopify needs where design is the leading priority over backend complexity.

Blayzer Digital is a St. Louis development agency with technical experience across web and ecommerce projects, including Shopify builds. Their development-oriented approach suits businesses with more specific functional requirements, custom logic, unique workflows, or app integrations beyond standard Shopify configuration.

A practical option for businesses that need more than a theme setup but aren’t yet at Shopify Plus complexity.

Superco is a Shopify-specialized agency with a focused practice around Shopify Plus development, custom storefronts, and ecommerce growth. Their dedication to the Shopify ecosystem rather than treating it as one of many platforms gives them relevant depth for brands with serious Shopify Plus requirements.

Worth considering for brands with complex storefront needs or scaling challenges specific to the Shopify Plus environment.

Vividsites is a St. Louis web design and digital marketing agency that offers Shopify development alongside SEO and online marketing services. Their combined web and marketing offering suits businesses that want their Shopify store and digital marketing strategy managed through a single agency relationship.

Best suited for small to mid-sized businesses with standard Shopify requirements and an interest in consolidated digital services.

Matchbox Design Group is a well-established St. Louis creative agency offering web design, development, and digital services. They include Shopify development within their broader portfolio and have a long track record serving regional businesses and organizations.

A familiar, reliable option for local businesses that value established agency relationships and regional continuity in their Shopify work.

Tecziq is a web and digital development company serving the St. Louis market with Shopify development among their service offerings. They are positioned toward small businesses and early-stage companies looking for cost-accessible Shopify solutions.

A reasonable starting point for businesses launching a first Shopify store with straightforward requirements and budget-conscious expectations.

IQComputing is a technology consulting and development firm in St. Louis that offers ecommerce and Shopify development as part of a broader technology services practice. Their IT and systems background provides a pragmatic, infrastructure-aware perspective on Shopify builds.

Suits businesses that need their Shopify development contextualized within a larger technology or IT environment.

Shopify’s dominance in the ecommerce platform market isn’t accidental; it’s earned through consistent platform investment, a mature app ecosystem, and a development experience that scales from first-time merchants to enterprise brands processing tens of millions in annual revenue.

But the platform is a tool. What you build with it, and who builds it, determines whether your Shopify store becomes a genuine growth asset or an underperforming storefront that limits rather than supports your business.

The companies on this list represent St. Louis’s strongest Shopify development options in 2026. The right fit depends on your store’s complexity, your growth stage, and the specific capabilities you need from a clean first launch to a full Shopify Plus build with deep integrations and ongoing optimization.

Evaluate based on relevant experience, not just portfolio aesthetics. Ask hard questions about post-launch support. And make sure the agency you choose has built stores that are actually comparable in scope and complexity to what you’re planning.