Shopify Plus Development Agency

We develop Shopify Plus functionality when standard platform features or existing apps cannot handle the requirement properly.

This can include custom product experiences, customer account functionality, B2B requirements, merchandising logic, subscriptions, cart behavior, Shopify Functions, internal tools and store-specific workflows.

For businesses that already have a technical team or active project, you can also hire Shopify developers through Uptek to add dedicated Shopify capacity without changing your existing setup.

We build new Shopify Plus themes and improve existing storefronts using Liquid, Online Store 2.0, JSON templates, metafields, metaobjects and reusable sections.

The theme should give customers a fast, clear shopping experience while making everyday content changes manageable for your ecommerce team.

Our work can involve product templates, collections, navigation, search, carts, custom sections, campaign pages and frontend functionality without rebuilding parts of the store that are already working well.

If you are researching an existing storefront, our Shopify Theme Detector can help identify the Shopify theme it uses.

Shopify Plus gives merchants additional ways to extend checkout through Shopify’s current extensibility framework.

We develop Checkout UI extensions, validation, promotional logic, upsell functionality, tracking and integrations where the standard checkout cannot meet the requirement.

Checkout work should have a clear purpose. That might be reducing friction, supporting a business rule, improving an integration or replacing functionality affected by changes to the Shopify platform.

Shopify Functions make it possible to run custom commerce logic within Shopify’s infrastructure.

We use Functions for requirements such as custom discounts, promotional rules, validation and other logic that cannot be handled through standard Shopify settings.

This became especially important as Shopify moved away from Shopify Scripts, which stopped working on June 30, 2026.

For Joovv, Uptek rebuilt important upsell and promotional logic using Shopify Functions and newer discount APIs. The implementation had to handle campaign-specific rules, including situations where certain offers could combine with influencer codes normally but needed different behavior during promotions such as BFCM.

That is the type of requirement where custom Shopify Plus development becomes useful.

Not every feature belongs inside a Shopify theme.

When functionality requires its own backend logic, admin interface, data processing or integration layer, we can build a custom Shopify app.

Our Shopify app development services cover applications for storefront functionality, internal tools, Shopify APIs, workflow automation, data synchronization and connections with external systems.

We also consider the existing Shopify app ecosystem before recommending custom development. Uptek tracks the ecosystem through our Shopify App Store statistics, which provides additional context around the size and development of the app marketplace.

For larger ecommerce businesses, Shopify Plus is often one system within a much wider technology stack.

We integrate Shopify with ERP, CRM, PIM, warehouse management, fulfillment, subscription, accounting, shipping, marketing and custom internal systems.

Before development begins, we define which platform owns each type of data, what needs to move between systems, how often it should update and how failures should be handled.

That planning helps avoid integrations that work during launch but become difficult to maintain as order volume and operational complexity increase.

A Shopify Plus migration involves more than importing products.

We plan around the storefront, customer and order data, content, URLs, SEO requirements, apps, analytics, integrations and custom functionality that need to continue working after the move.

Uptek can support migrations from Magento, WooCommerce, BigCommerce and other ecommerce platforms.

Our Shopify migration checklist covers the main areas that should be reviewed before launch, including data, redirects, integrations, analytics and post-migration testing.

For established stores, protecting search visibility matters as much as moving the catalog. Redirect mapping, metadata, crawlability and existing high-value URLs should be considered before the new store goes live.

Shopify Plus stores often accumulate apps, JavaScript, analytics tools, campaign code and custom functionality over time.

We review the theme and frontend implementation to identify what is affecting performance without removing functionality the business depends on.

That can include Core Web Vitals, Cumulative Layout Shift, JavaScript, Liquid, third-party scripts, images, mobile performance and key shopping journeys.

Performance also needs to be considered in the context of conversion. Uptek’s ecommerce conversion rate calculator can help you measure your current conversion rate, while our Shopify conversion rate statistics provide broader benchmarks for Shopify stores.

Some businesses need a new store. Others already have a good store and need the right team to keep improving it.

Uptek can take over an existing Shopify Plus implementation or work alongside your internal team on new functionality, checkout changes, integrations, platform updates, campaigns, performance, accessibility and day-to-day technical issues.

Joovv is a good example of that model. What began as Shopify development became an ongoing partnership that has continued since 2019 and has covered several generations of Shopify technology.