Shopify Plus is a different platform from standard Shopify. The checkout is fully customisable via Checkout Extensibility and Shopify Functions. The B2B suite handles company accounts, custom catalogues, and payment terms natively. The API rate limits are ten times higher. And Shopify Scripts, the old approach to checkout logic, will stop functioning entirely on 30 June 2026. Businesses that built their checkout rules on Scripts need a Shopify Plus developer now, not later. KiwiCommerce is a UK-based, official Shopify Experts partner with a team certified in Shopify Plus development.
Shopify Plus becomes the right choice when a standard Shopify store starts hitting operational limits, checkout customisation requirements that standard plans cannot meet, B2B wholesale needs that third-party apps handle badly, or revenue volumes where the reduced transaction fees on Plus change the economics. Our Shopify Plus developers work with brands at all of these tipping points.
Get In TouchYou are on standard Shopify and approaching the point where Checkout Extensibility, higher API limits, and Launchpad for campaign automation justify the move to Plus. Our developers handle the migration cleanly and set up the Plus-exclusive features that make the upgrade worth the investment from day one.
Shopify Plus includes a native B2B suite with company accounts, custom price lists, net payment terms, and PO-based checkout, all without third-party app workarounds. Our dedicated B2B Shopify Plus developers configure and extend these features to match how your trade customers actually buy.
You have a client project on Shopify Plus and need a certified development resource delivered under your brand. We work as your white-label Shopify Plus partner. Your client sees your name. We supply the expertise.
Shopify Scripts stop functioning on 30 June 2026. If your checkout discount logic, custom shipping rules, or payment method visibility is built on Scripts, your store needs to be migrated to Shopify Functions before that date. Our Shopify Plus developers handle this migration and rebuild the logic correctly in Checkout Extensibility.
Shopify Plus is the enterprise tier of Shopify. It sits above all standard Shopify plans and unlocks a set of capabilities that are either absent or significantly restricted at lower tiers. The headline differences matter for specific types of business. Standard Shopify lets you apply your logo and brand colours to the checkout. Shopify Plus lets you control how the checkout actually behaves, including custom fields, upsell blocks, dynamic discount rules, payment method visibility by customer segment, and unique logic for B2B buyers. This is all built through Checkout Extensibility and Shopify Functions, which are Plus-exclusive tools.
The platform also handles B2B wholesale natively. Company accounts with multiple buyers, custom price lists per company, net payment terms built directly into checkout, and purchase order support are all available without the complexity and ongoing cost of stacking third-party apps. For brands operating both DTC and wholesale from one platform, Shopify Plus is the cleaner architecture.
One critical date for any Shopify Plus store to be aware of: Shopify Scripts, the legacy checkout customisation tool, will stop working on 30 June 2026. Stores that built discount logic, shipping rules, or checkout flows on Scripts need those rebuilt in Shopify Functions before that deadline. Our Shopify Plus developers handle these migrations as time-sensitive work because missing the date means broken checkout on a live trading store.
Here is what our Shopify Plus developers build and maintain:
2+ Experience Years
For contained Shopify Plus tasks within a larger project that has senior oversight. Theme customisation, app setup and configuration, basic Liquid code work, and straightforward content or layout changes. These developers work efficiently on well-defined scopes. Not suited for Checkout Extensibility, custom app builds, or complex integrations without senior guidance.
5+ Experience Years
Custom Shopify Plus theme development, Shopify Functions for discount and shipping logic, third-party app integrations, performance optimisation, and standard ERP connection work. These developers manage Shopify Plus projects independently, handle mid-complexity B2B configuration, and make sound decisions about when a custom app is the right answer versus an App Store solution.
7+ Experience Years
Complex Checkout Extensibility builds, custom private app development using Shopify CLI, advanced Shopify Functions with multiple discount stacks, enterprise ERP integrations handling high API call volumes, multi-store expansion architectures, and Shopify Plus B2B at scale. These developers lead large Shopify Plus projects, mentor junior team members, and make the architectural decisions that determine whether a Plus build stays clean and maintainable over time.
5+ Experience Years
Specialist in Shopify Plus's native B2B suite. These developers configure company accounts with custom roles and permissions, build company-specific price lists and catalogues, set up net payment terms within the checkout, configure PO-based ordering, and extend the B2B layer with custom apps where the native functionality does not cover the full buying workflow. They understand both the capabilities and the current limitations of Plus B2B, including the lack of Shop Pay and Apple Pay in the B2B checkout, and design around them sensibly.
5+ Experience Years
Builds private and public apps for Shopify Plus using Shopify CLI, the Polaris design system, and Shopify's Admin and Storefront APIs. These developers create the functionality that the App Store cannot provide: custom fulfilment logic, merchant- specific reporting dashboards, bespoke customer account tools, and deeply integrated workflow automation. They understand Shopify's app review standards and build apps that stay compatible with platform updates.
7+ Experience Years
For complex Shopify Plus builds or migrations, the technical decisions made at the start determine the quality of everything that follows. These developers assess your current Shopify setup or source platform, design the Shopify Plus architecture, including app stack, integration layer, and checkout structure, and lead the development team through delivery. They decide what gets custom-built versus sourced from the App Store, and why, reducing wasted spend on the wrong tools.
KiwiCommerce holds Official Shopify Experts status, verified by Shopify itself. This is not a self-declared credential. It means our developers have been assessed against Shopify's own standards for technical depth and client delivery. When you hire Shopify Plus development experts from our team, you work with people whose Shopify credentials are on record with the platform.
Every Shopify Plus developer on your project is based in the UK. Calls happen at a sensible time. Questions get answered the same day. When something breaks on your Shopify Plus checkout during a sale event, you reach someone who is at their desk and can respond. No overnight handoffs. No time zone guessing.
Shopify Scripts will stop working on 30 June 2026. If your checkout relies on Scripts for discount logic, payment filtering, or shipping rules, you have a fixed deadline. Our Shopify Plus developers are already migrating stores from Scripts to Shopify Functions. We assess your existing Script logic, rebuild it correctly in Functions, and test it against your checkout before the deadline arrives.
There is a significant difference between a Shopify Plus build that uses platform tools correctly and one that works through workarounds. Our developers write code that stays compatible with Shopify platform updates, uses Shopify CLI and Polaris standards for app builds, and structures checkout customisations in a way that another developer can pick up and maintain without a three-hour briefing.
Your store logic, client relationships, and business data remain private. We sign non-disclosure agreements as standard. For agencies using us as a white-label Shopify Plus resource, we operate completely under your brand. No KiwiCommerce references in code, commits, or any deliverables.
Shopify Plus projects, particularly migrations and Checkout Extensibility builds, go wrong when the scope is not pinned down upfront. We document what is being built, agree the delivery milestones in writing, and fix the timeline before development begins. You know what you are getting and when you are getting it.
From first contact to a certified Shopify Plus developer working on your project, the process is direct. You know the scope, the cost, and the timeline before anything starts.
Tell us what you are building or fixing on Shopify Plus. Whether it is a new checkout build, a B2B configuration, a Scripts migration, a platform migration, or an ongoing development resource, we need to understand the context and complexity. We come back within one business day with an honest assessment and a clear proposal.
For stores currently using Shopify Scripts, we carry out an audit of your existing checkout logic before agreeing on a migration timeline. This maps every Script to a Function equivalent, identifies anything that needs custom development, and gives you a clear picture of what the migration involves, well before the June 2026 deadline. For other Shopify Plus projects, we carry out the relevant pre-project review of your current setup.
Based on your requirements, checkout, B2B, custom app, migration, or ongoing development, we identify the right certified developer from our team. You find out who that person is before work starts. If you want to speak to them first, we can arrange that.
We document what is being built, broken into clear delivery stages, before development begins. Shopify Plus checkout builds are tested in a development store before anything touches your live checkout. Migrations are staged so that go-live involves a tested swap, not a hope. You review and approve each stage.
The job does not end at launch. Shopify updates the platform continuously. Apps need to be maintained. New features need building. Performance needs monitoring. We offer retainer-based support for Shopify Plus stores and currently maintain over 100 live eCommerce stores in that capacity. You have certified continuity rather than starting the search again for every task.