Hiring a Shopify Plus developer is one of the most consequential decisions a growing e-commerce brand can make. The wrong hire - whether an agency, a freelancer, or an in-house developer - can cost you months of progress, significant budget, and competitive position.
The challenge is that Shopify experience is not a monolithic credential. Someone who built ten Shopify Basic stores has a fundamentally different skill set from a developer who has delivered complex Checkout Extensibility builds, custom Shopify Functions, and ERP integrations on Plus.
These seven questions will help you cut through the noise and find a developer or agency with genuine Shopify Plus expertise.
Question 1: Can You Show Me Shopify Plus-Specific Work?
This is your first filter. Any Shopify Plus developer worth hiring should be able to show you examples of projects that used Plus-exclusive features: Checkout Extensibility, Shopify Functions, Flow automations, B2B, or multi-store setups.
What to listen for: Specific feature names, problems they solved with those features, and measurable outcomes. Vague answers about 'building Shopify stores' do not demonstrate Plus expertise.
Question 2: How Do You Approach Checkout Extensibility?
Since Shopify has deprecated checkout.liquid for new Plus merchants, Checkout Extensibility is the standard for checkout customization. Ask how they have used it, what they have built with it, and what its limitations are.
A strong candidate will discuss UI extensions, checkout branding API, and the App Bridge framework. A weak candidate will either be unfamiliar or try to redirect you to checkout.liquid - a sign they have not kept pace with the platform.
Question 3: What Is Your Experience with Shopify Functions?
Shopify Functions - the WebAssembly-based system for extending commerce logic - is the future of customization on Plus. Ask specifically about discount functions, payment customization functions, and shipping rules.
Experienced developers will be able to explain what Functions can and cannot do, how they differ from scripts, and when to use them versus Shopify Flow or a custom app.
Question 4: How Do You Handle Third-Party Integrations?
Enterprise brands invariably need Shopify connected to ERPs (NetSuite, SAP), PIMs (Akeneo, Contentful), 3PLs, CRMs, and marketing platforms. Ask about specific integrations they have delivered.
Look for: Experience with Shopify's Admin API and Storefront API, webhook architecture, data synchronization strategies, and error handling in bi-directional sync scenarios.
Question 5: How Do You Measure and Optimize Performance?
Shopify Plus sites often carry significant performance debt - bloated themes, excessive apps, render-blocking scripts. Ask your candidate how they approach performance optimization.
Strong answers reference specific metrics: Largest Contentful Paint (LCP), Interaction to Next Paint (INP), Cumulative Layout Shift (CLS), and Shopify's built-in Speed Score. They should be able to describe specific techniques: lazy loading, script deferral, image optimization, and critical CSS extraction.
Question 6: What Is Your QA and Deployment Process?
Deployment errors on a live Plus store can cost thousands in lost revenue per minute. Ask specifically about their QA process, staging environments, testing protocols, and rollback procedures.
A professional development partner will use Shopify's theme versioning, maintain a staging store for testing, follow a structured QA checklist before any deployment, and have a clear rollback plan for every release.
Question 7: How Do You Stay Current with Shopify's Platform?
Shopify moves fast. Checkout Extensibility, Shopify Functions, Hydrogen, and the Customer Account API have all been introduced or significantly updated in the past two years. Ask how candidates stay current.
Look for: Active participation in Shopify Unite and Editions announcements, Shopify Partner Academy certifications, involvement in Shopify's developer community, and demonstrated adoption of new platform features in their work.
Red Flags to Watch For
- Reluctance to provide references from Shopify Plus clients
- Inability to explain Checkout Extensibility or Shopify Functions in specific terms
- Proposing workarounds that have better native Plus solutions
- No structured QA or deployment process
- Pricing that seems too low for the complexity described - it usually means corners will be cut
Why Work With a Specialist Agency
Generalist Shopify developers and agencies can deliver standard builds effectively. For Shopify Plus, however, the complexity of enterprise requirements, the breadth of Plus-exclusive APIs, and the cost of errors at scale make specialism a non-negotiable.
We are as a dedicated Shopify Plus development agency - our team works exclusively on Plus implementations, integrations, and ongoing development for brands serious about commerce at scale.
We believe that how important to have great customer-client relationship. Ready to find the right partner?
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