Build Custom Shopify Solutions That Scale With Your Business

Shopify custom development means building features, integrations or storefront logic using Shopify's supported APIs (Functions, Admin API, Storefront API, theme app extensions) that do not exist as an installable app. It is for requirements a settings screen cannot configure, not a replacement for apps in general. The distinction matters commercially: an app you can configure in an afternoon is almost always cheaper than code somebody has to maintain for you. We scope custom work where the requirement is specific to your business, tied to your margins, or where an app would otherwise sit in the critical path of every order.

Build custom when the app conflicts with your roadmap, slows the storefront measurably, or charges per order at a scale that keeps growing. Custom typically pays back inside 8 to 12 months at GMV above $2M a year, because per-order pricing rises with you while a built feature does not. The comparison has to include maintenance, though: your code needs updating as Shopify's APIs change, and an app vendor absorbs that cost for you. We put the numbers side by side before recommending either, and we regularly conclude that the app is the right answer.

Yes. We build discount, shipping and payment customization Functions that run inside Shopify's checkout, designed within the platform's documented execution-time and input-size limits. Functions are the supported way to change checkout behavior now, and because they run server side inside Shopify they do not slow the page the way an injected script would. We instrument every Function with logging and test it against real production cart shapes, including the awkward ones: mixed carts, subscription items, multi-currency orders and partially out-of-stock lines. Functions tested only against a clean two-line cart are where checkout bugs come from.

Yes, within Shopify's supported extensibility. We use Checkout UI Extensions and Functions to customize validation, upsells and branding without forking or bypassing Shopify's own checkout. Keeping checkout on Shopify is a deliberate position: it is the surface with the highest conversion risk, it carries your PCI scope, and Shopify tests it at a scale no agency can reproduce. Where a requirement genuinely cannot be met inside extensions, we will tell you rather than build a custom checkout that quietly costs conversion. Baymard's research puts average cart abandonment at 70.19%, so checkout changes get measured, never assumed.

Yes. We have built two-way sync between Shopify and systems like NetSuite, SAP Business One and Zoho, keeping inventory, pricing and order data consistent in near real time rather than through nightly batch exports. The hard part is rarely the API, it is agreeing which system owns each field and what happens on a conflict, so that gets decided and documented before any code is written. Every sync is idempotent and queued, with retries and alerting, so a brief ERP outage does not create duplicate orders or drop events. Timelines depend on the other vendor's API and availability, not only on us.

We build on theme app extensions, sections, metaobjects and the Admin and Storefront APIs instead of forking core theme files, so your store stays on Shopify's normal update path instead of breaking on the next theme or platform release. Where a change genuinely has to touch theme code, it is isolated and documented so a future developer can find it. We also track Shopify's API version deprecations, since each version is supported for a limited window and unmaintained integrations break silently when one is retired. Upgrade safety is a design constraint here, not a cleanup task bolted on afterwards.

Yes, including Shopify Flow automation, Checkout Extensibility, multiple checkout extension points and Shopify Markets for merchants operating at higher volume or across several countries. Plus mainly changes what is available to build with rather than how we build: organization-level structure, native B2B, higher API limits and scheduled launches. We also use it to keep logic inside the platform instead of in apps, which reduces the per-order costs that scale against you. If you are on standard Shopify and a requirement genuinely needs a Plus-only capability, we say so early rather than engineering an expensive workaround around it.

A single, well-scoped feature usually takes 2 to 4 weeks. Multi-feature builds replacing several apps typically run 4 to 8 weeks, and Shopify Plus or multi-system integration projects run 8 to 16 weeks depending on scope. The variable that moves these dates most is not our capacity, it is access and decisions: sandbox credentials for the other systems, sign-off on edge-case behavior, and somebody available to test with real data. We break work into two-week increments with a working demo at the end of each, so the timeline stays visible rather than being reported at the end.

Both. We choose the runtime per surface: Hydrogen for highly interactive areas, Liquid for SEO-critical content pages. That split is deliberate rather than fashionable, because a Liquid theme is cheaper to maintain and perfectly capable for most catalogs, while Hydrogen earns its keep where the interface genuinely needs to behave like an application. Going headless also adds a codebase, a deployment pipeline and ongoing dependency maintenance, which is a real operating cost. If your actual requirement is a faster or better-looking theme, we will say Liquid and point you at our speed optimization work instead.

Yes, that is our default. Theme app extensions, sections and metaobjects keep you on the upgrade path, so your theme keeps receiving vendor updates and your apps keep working. Practically, new functionality arrives as sections your team can add and configure in the theme editor, not as code edits only a developer can change. We keep a short written list of anywhere we did have to touch core files, with the reason, so nothing is a surprise a year later. Forked themes are one of the most common reasons stores end up unable to update or migrate.

We design within the documented execution and input-size envelope, profile against production carts, and instrument logs for every shipped Function. The failure mode to avoid is a Function that works on a two-line test cart and exceeds its budget on a real one, which is why we test with your largest and most awkward carts rather than clean fixtures. Where logic is genuinely too heavy for a Function, the answer is to move it upstream by precomputing values into metafields, not to squeeze it into checkout. We tell you plainly when that trade-off applies to your requirement.

You get full documentation and, where practical, admin-editable settings so your team can make small changes themselves. For anything requiring code changes, you can request a scoped update or move to an ongoing engineering retainer. Code lives in your own repositories and any custom app is registered under your Shopify account, so you are not locked in if you want another agency or an in-house developer to take it over. We also flag which parts will need periodic attention, mainly API version updates and dependency maintenance, so the ongoing cost is known upfront rather than discovered when something breaks.