A guide to hiring a Shopify developer
Shopify is a hosted platform for online stores. It handles hosting, payments and the basic shop for you, and lets developers change the look and add features. A Shopify developer is the person who does that work. They shape a theme, write code in Liquid, build apps and make checkout fit your business. If your store feels slow, looks like everyone else’s or cannot do something your customers ask for, a specialist can turn that around.
What a Shopify developer actually owns
The role covers more than editing a theme. A Shopify developer plans how pages are built, so your team can change them in the editor. They write and review theme code and connect the store to other tools. They watch speed, since every extra script costs sales. They also care about the boring parts, such as redirects, product data and keeping a clean copy of the theme in version control. A person who does all that saves you from a patchwork of apps.
Themes and Liquid
Liquid is the template language Shopify created for its themes. It decides how product pages, collections and the cart are printed, using your store data. A developer who knows Liquid can change a layout, show a size guide on the right products or add a new block to the home page. They also know the theme structure, where files live and how to change a store without breaking the next update. Ask to see a theme they edited and why they made each change.
Online Store 2.0 sections
Older themes only let you move sections around on the home page. Online Store 2.0 brought sections and blocks to every page, along with templates stored as simple data files. This means your marketing team can build and change product and collection pages in the editor, while a developer builds the sections they use. A good developer designs these sections to be simple and safe, so the editor stays easy to use and a wrong click does not break the page.
Apps and the Admin API
Apps add features that a theme cannot, such as reviews, subscriptions or a link to your accounting tool. Shopify offers APIs for this, including the GraphQL Admin API for store data, the Storefront API for custom shopping screens and webhooks that tell your app when something changes. A developer who builds apps knows how to ask for only the permissions needed, handle limits on requests and retry when a call fails. They can also build a small private app for one store, which is often better than paying for a large public one.
Checkout extensions
Checkout is the part of the store where changes carry the most risk. Shopify has moved away from editing the checkout page code directly. Today, custom work is done with checkout extensions and Shopify Functions, which add fields, messages, discounts or rules in a supported way. A developer who knows these tools can move older checkout changes to the new approach and tell you plainly what the platform allows. Which checkout features you can change also depends on your Shopify plan, so ask early.
Store speed
Speed is mostly about what you load. Large images, many apps and scripts for tracking and chat add up. A Shopify developer looks at what each app adds, removes what is not used and loads the rest at the right time. They compress and size images and keep the theme code light. Ask a candidate how they measure speed, and be careful with anyone who talks only about a score and not about how the page feels on a phone.
Migrations to Shopify
Moving to Shopify from another platform is more than copying products. Data has to be cleaned and mapped, customers and orders imported, and pages recreated. Old web addresses need redirects so that search engines and bookmarks still work. A careful developer plans the move in steps, tests on a copy of the store and checks the result before you point your domain at it. Ask about past migrations and what went wrong in them.
Headless and Hydrogen
A headless store keeps Shopify for products, checkout and orders, and builds the front end separately. Shopify offers Hydrogen, a React based framework for this, and Oxygen, its hosting for Hydrogen stores. Headless gives full control over design and speed. It also means more code to run, more to test and more to pay for. Most stores do well with a theme, so a developer should ask what you cannot do today before suggesting it.
When to hire a Shopify developer
- You are launching a store and want a theme that fits the brand.
- Your store is slow and you suspect apps or large images.
- You need a feature that no app does well, or one app is doing too much.
- You are moving from another platform and cannot afford to lose search traffic.
- Your checkout needs custom fields or rules.
If you only need someone to add products and answer customers, a virtual assistant is a better fit than a developer. Hearing that from a specialist at the start is a good sign.
Reading a Shopify developer’s background
Ask for a live store they built or fixed and open it on a phone. Look at how quickly it loads, how the product pages feel and how the checkout flows. Then ask what they changed, what was hard and what they would do differently today. A list of apps and themes tells you little, since anyone can install them. The better test is whether the store still works well a year later.
Interview questions to try
- When would you write custom Liquid, and when would you use a built-in setting?
- How would you find out why a collection page is slow?
- How do you decide between a public app and a small private app?
- How would you plan a move from another platform without losing search links?
- What would you check before editing a live theme?
The best answers give reasons and a real example from past work. Be wary of a candidate who answers every question with a new app or never mentions the downsides of custom code.
Run a small paid exercise
Give each finalist the same small task from your real list of work. It could be a new section for a product page, a speed review of one collection or a short plan for a migration. Pay for the time. Then compare the work, the questions asked and how clearly each person explains the result.
Agree how the work is kept healthy
Agree where theme code is stored, who reviews changes and how a change is tested on a copy of the store before it goes live. Ask for a short note on each custom section or app that says what it does and how to change it. Keep your Shopify account, your domain and your code in your own name, with a separate login for each person. Then nothing is lost if the people change.
Settling in
Give your developer staff access, a copy of the theme and a short list of problems in order. A weekly call and one shared task board keep progress easy to see. Share the odd cases early, such as a product that needs special handling at checkout, because fixing those is what a specialist is for.
Mistakes to avoid
- Adding an app for every small need until each page is slow.
- Editing the live theme without a copy to test on.
- Moving a store without redirects for the old web addresses.
- Going headless when a theme would do the job.
For related skills, see our BigCommerce developers for another store platform, or our web developers for wider site work.