Shopify development and customization.

We have built on Shopify since 2017 — themes, Shopify Plus storefronts, custom apps, and migrations onto the platform from WooCommerce, Magento, BigCommerce and bespoke systems. It is the platform we recommend most often, which is exactly why it is worth being precise about where it stops being the right answer.

What Shopify development covers

"Shopify developer" describes at least four different jobs, and merchants are often sold one while needing another.

• Theme development. Building or rebuilding the storefront itself — Online Store 2.0 sections, templates, metaobjects, and the merchandising controls your team uses week to week.
• Shopify Plus engineering. Checkout extensibility, Shopify Functions, B2B, Markets, Flow and multi-store setups. This is where the licence fee is earned or wasted.
• Custom app development. Embedded admin apps and storefront extensions, for behaviour no listed app implements the way you need it.
• Migration onto Shopify. Catalogue, customers, orders, content and URLs moved from another platform without losing rankings or order history.

Shopify against Shopify Plus, on the differences that decide a build

Capability	Shopify	Shopify Plus
Checkout customization	Very limited	Checkout UI extensions and Functions
Discount and shipping logic	Apps, with the page weight they bring	Server-side Functions, no page weight
B2B / wholesale	Apps or a second store	Native company accounts and price lists
Multi-market pricing and duty	Basic	Markets, with landed cost handling
Storefronts on one account	One	Multiple, with shared administration
API rate limits	Standard	Substantially higher

Shopify Plus, actually used

Most Plus merchants we meet are paying for capabilities they have never switched on, because their agency never got past theme work. Four of them are worth naming, because each one usually replaces an app and a monthly bill.

Checkout extensibility

Checkout UI extensions let you add fields, upsells, delivery instructions and validation to a checkout you previously could not touch — without the script-tag hacks that used to break on every platform update. This is also the migration path off checkout.liquid, which is no longer supported.

Shopify Functions

Discounts, shipping rules, payment method visibility and cart validation running server-side inside Shopify's own pipeline. They cost nothing in page weight, which is why replacing apps with Functions is one of the highest-leverage performance changes available on the platform. On one replatform this took the app count from 41 to 12.

B2B on Shopify

Company accounts, price lists, payment terms and per-location catalogues. Genuinely capable now for a large share of wholesale operations that would previously have needed a custom ordering platform — and considerably cheaper to run when it fits.

Markets and localisation

Per-market pricing, currencies, domains and duty handling. Worth setting up properly: showing landed cost early rather than at the final checkout step is one of the few changes we have measured moving cross-border conversion decisively.

Themes written to be maintained

Liquid is easy to write badly, and the cost arrives eighteen months later when nobody will touch the store. We keep sections small and composable, name things for what they are, avoid the 4,000-line snippet that ends up holding three unrelated features, and leave documentation in the repository.

The test we hold ourselves to is simple: can your next developer — ours or yours — make a change without reading the whole theme first? If a client leaves us, we would rather they leave with something maintainable than with a dependency.

Migrating onto Shopify

Migrations are the highest-risk work on this list, because the damage from a bad one is invisible for weeks. Ours run off a complete URL map with every legacy path preserved or permanently redirected, structured data rebuilt before launch rather than after, and a cutover rehearsed against a clone of production data.

Customers, order history and subscription state come across as well, not just the catalogue — the detail most quotes gloss over and most merchants discover afterwards. Read the Northlane migration case study for how one ran end to end.

When Shopify is not the right answer

We build both, so this recommendation costs us nothing either way. Shopify stops fitting when the rules of the business cannot be expressed in it: weight-based pricing where the invoice is adjusted after picking, delivery slots with capacity, substitution logic, deep multi-vendor payouts, or entitlement models that are closer to licensing than retail.

If two or three of those describe your operation, the honest recommendation is a custom ecommerce build in Next.js, Vue.js, Node.js or Laravel — or a hybrid, with Shopify keeping the storefront and a custom system holding the logic behind it. If only one does, an app or a Function usually resolves it for a fraction of the cost, and we will say so.

Performance on Shopify

Shopify handles the hard infrastructure, which means almost every slow Shopify store is slow for reasons the merchant controls. In practice it is nearly always the same short list: apps injecting render-blocking script on every page including the ones they are not used on, collection templates loading every variant image up front, third-party fonts and chat widgets loaded ahead of content, and image sizes served far larger than they display.

An audit that names which app costs what is worth more than a general recommendation to improve speed, so that is what ours produces — measured against field data rather than a lab score, because the number that matters is the one your actual customers experience on their actual phones.

Who this is for

Merchants already trading on Shopify who have outgrown their theme; brands migrating onto Shopify from WooCommerce, Magento or a bespoke build; Plus merchants who are paying for capabilities nobody has switched on; and in-house teams who need Shopify specialists alongside them rather than instead of them — which is staff augmentation rather than a project.

What it costs, and how long it takes

Both depend on scope, and scope on a Shopify project varies more than people expect: a focused theme rebuild and a Plus migration with a 30,000-SKU catalogue, an ERP integration and eight years of URLs are not the same job. We would rather scope yours than publish an average that fits neither.

Send a paragraph about the store and what is wrong with it. A senior engineer replies with questions, not a brochure, and the free consultation that follows ends in a written scope and a proposal. Talk to our Shopify team.