Build & Migrate
Shopify Development
Custom themes to headless builds.
(opens in a new tab) From custom themes to complex Shopify Plus builds, we develop stores that are fast, scalable and engineered to convert. Nothing off the shelf: what we build is shaped around your catalogue and the way you actually trade.
The brands we build, and the two we run ourselves.
-
Powerlete Sportswear · our own -
WUKA Period underwear -
Nour Hammour Luxury fashion -
Black Sand FMCG distribution -
Knack Snacks High-protein snacks -
Cream Cornwall Coastal homewares -
Poppy Elder Fine jewellery -
Fittr Nutrition Supplements · our own -
Caorunn Gin Premium Scottish gin -
Tacky And Upsetting Custom stickers -
Waldo Swiss watches -
Lifestyle Home Collection Homewares -
Ebony Ivory Interiors Interiors -
Bordeaux12 Vintage designer fashion -
Ginny Litscher Luxury fashion -
Seko Logistics Freight, logistics and fulfilment -
La Sura Bakery Artisan bakery
Certified Partner The case for it
Why brands hire our Shopify developers
Themes run out of road. Once your merchandising rules, subscription logic or ERP sync stop fitting what a theme can do, you need development rather than another app bolted on top.
We build custom themes, Shopify Plus features and headless front ends for UK and US brands whose requirements outgrew the App Store. Shopify is the only platform we work on, and that narrowness is the point: we know which Liquid patterns hold up under a Black Friday queue and which ones buckle, because our own stores run on the same code.
The run of it
How we run a Shopify development project
-
Discovery and requirements
We map exactly what has to be built: functionality, integrations, performance targets and technical constraints, all before a line of code is written.
-
Architecture and planning
The lead developer designs the technical architecture and picks the approach, so what ships is scalable and someone else can maintain it.
-
Development and integration
Structured sprints with regular demos and checkpoints, so you see the store working rather than reading a status report about it.
-
QA, testing and launch
Testing across devices and browsers, then a managed launch with full handover to your team.
Build
Custom Shopify development
A trade store where every buyer sees their own prices
Black Sand is an FMCG distributor, and the brief was not a storefront, it was an ordering system: a trade store where each buyer sees their own catalogue and their own prices. No theme does that out of the box.
We built it from nothing in 2022. The same build carries their SEO, lead generation and paid ads, because the store and the acquisition were never separate problems.
Knack Snacks
UK and US markets, subscriptions
Shopify website development
A snack brand trading two markets from one admin
Knack Snacks sell high-protein snacks in the UK and the US. Subscriptions and two markets is the pairing that breaks most theme builds: pricing, shipping and the subscription options all have to agree on every product page, in two currencies.
We built it on Horizon with a subscription selector, and it trades the UK and the US from one admin: one catalogue, two markets.
Scope
What our Shopify development services include
On the storefront
Custom theme development
A theme built from the ground up, or an existing one extended and cleaned up. Either way your team can still edit it in the admin afterwards.
Performance optimisation
Core Web Vitals, page speed and front-end weight, audited on the store you actually have rather than on a demo of it.
Behind the storefront
Third-party integrations
ERPs, CRMs, fulfilment, payment gateways and loyalty platforms connected to Shopify cleanly, with no gap where the data should be.
Shopify Plus configuration
Checkout extensibility, Functions, Flow, B2B and Markets set up properly, so the licence fee buys something you can point at.
When Liquid runs out of road
Headless builds
Hydrogen and the Storefront API when the requirement earns the complexity, and an honest answer first about whether it does.
Custom apps and Functions
Private apps and Shopify Functions where the logic belongs in the platform rather than in a theme that someone will edit later.
The honest comparison
Custom build, or a theme and a few apps?
A theme is the right answer more often than an agency will tell you. Here is where the two actually separate.
| Question | Theme plus apps | Custom development |
|---|---|---|
| Time to trading | Days to a few weeks | Weeks, and longer where integrations are involved |
| Merchandising logic | Whatever the theme and the apps already do | Whatever your catalogue actually needs |
| Running cost | Monthly app fees that compound as you add them | Higher once, then maintenance |
| Speed under load | Falls with every script a new app injects | Controlled, because the code is yours |
| Who it suits | Still proving the product sells | The store has become the constraint |
If you are pre-launch, buy a good theme and spend the difference on finding customers. We will say that rather than take the bigger project.
Read: what actually moves the cost of an ecommerce buildIntegrate
Ecommerce development services
One partner for the storefront, the shop floor and the back office
Cream Cornwall sell luxury coastal homewares online and across three shops. We built the store on Horizon, ran the migration onto it, and set up Shopify POS in all three shops.
That is what ecommerce development services covers here: the storefront, the systems behind it, and the work that keeps the whole thing upright once it is live. We stay on as consultancy partner.
Shopify web development
Everything here ran on our own store first
Powerlete is our sportswear brand. We built it, we run it, and we pay for every app on it. A pattern recommended to a client has usually already been through a season of real traffic and real returns here.
It is also why a slow build costs us as well as you. The Core Web Vitals this site publishes are measured on Fittr Nutrition, our second brand, rather than on a staging site built to score well.
In their words
Reviews on the Shopify Partner Directory
Written by merchants, on Shopify's platform, where anyone can go and check them.
-
From start to finish, they were incredibly easy to work with. They understood the brief perfectly and delivered to a very high standard. Communication was excellent throughout, with quick and clear responses to any questions I had.
Tacky And Upsetting Store build or redesign · April 2026
-
The things [the team] have put in place and recommended for us have paid immediate dividend. We wish we had come in contact with [them] sooner.
ARTMARTIAL Store build or redesign · April 2026
-
I can’t recommend [the team] enough, [they] helped us with everything from product design, supplier communication to website building and SEO. We were able to build a brand off the back of all [their] information and help.
Reveliér Studios Business strategy guidance · April 2026
Buying it
How we work with you
Project build
A scoped build with a named senior developer, a fixed shape and a launch date. The usual shape when a theme has run out of road.
Shopify store setup
The smaller version, and worth naming separately. Structure, templates, settings, payments, taxes and tracking configured properly before launch rather than after it.
Developer days
A block of days with a named developer when you already know what needs building and only lack the hands. Priced on days, not on a project.
Growth retainer
Ongoing development after launch, either retained or as fixed scopes. Nothing obliges you to keep us on for the code to keep running.
Is this the right thing to buy from us?
Worth a conversation
It suits a brand already trading whose store now has to do something a theme cannot. If you are pre-launch and still testing whether the product sells, start lighter.
Probably not us
We build on Shopify and we migrate stores onto it, which rules out WooCommerce and Magento. That is a narrower answer than most agencies give and it is the true one. If you are committed to staying on either, you want a specialist in that platform.
And if the brief is small and the catalogue simple, a good freelance developer is often the cheaper and equally capable choice. What an agency adds is cover: a second pair of eyes on anything touching checkout, and someone still there when one person is away.
Same job, different words
What different people call this job
Ask three suppliers what the work is called and you get three answers. Here is the map, so you can search however you like and still land in the right place.
People arrive here searching for ecommerce web development, for an ecommerce development agency or for a Shopify development agency, and on this site those are all the same team. Ecommerce website development is the whole job rather than the front end of it: the catalogue, the checkout, the integrations behind them and the ecommerce development services that keep the thing upright afterwards. If you would rather hire Shopify developers into your own team than retain ecommerce developers on a contract, say so early and we will scope it that way instead.
Shopify web development covers the same ground as ecommerce web development above, and we treat them as one brief rather than two quotes. The real choice is between a shopify web development agency and a single shopify web developer. If you are looking for a shopify website developer rather than an agency, say so early: we will tell you honestly whether the brief needs a team or one good contractor, and the answer is not always us.
Ask three suppliers what they call the job and you will get three answers: an ecommerce website development agency, an ecommerce website development company, or an ecommerce website development services shop. All three mean the same team building a store from a technical brief rather than a design one. Custom ecommerce services and custom ecommerce website development describe the same thing again once the catalogue needs logic a theme cannot hold. If your brief is genuinely custom, say so early, because a custom quote and a theme-plus-app quote start from different numbers.
The same naming spread happens on the Shopify side. A shopify web development company, a shopify website development company, or a team offering shopify web development services and shopify website development services: pick whichever phrase you searched, the work is identical here. Call it a shopify ecommerce development company, or ask for shopify ecommerce development services specifically, and you get the same senior developers either way, because we do not run a junior tier for the Shopify half and a senior one for everything else.
Search for an ecommerce website developer, ecommerce web developers as a team, or an ecommerce website developer uk based, and you are describing the people rather than the agency: the same senior developers who scope the work also write the code. Ecommerce website development london is not a different service, it just means the kick-off meeting can happen in person; ecommerce web development uk work for a brand outside London runs the same way, mostly over a call.
A shopify store setup is the smaller shape of this work and worth naming separately, because plenty of people searching for a shopify setup service do not want a bespoke build at all. They want a store stood up properly the first time: structure, templates, settings, payments and taxes configured, products and collections in, and the tracking working before launch rather than after. We quote a shopify store setup service on scope like everything else, and the honest split is that a setup suits a brand launching with a known catalogue, while the development work above starts where a theme runs out of road.
Plenty of people looking for this do not search for Shopify at all. They search for an ecommerce web agency and work backwards from there, which is a reasonable way round: the platform matters less at that stage than whether the team has built the thing you are describing before. We are that agency and we build on Shopify, so if you arrive on the general term and the answer turns out to be a different platform, we will say so rather than sell you the one we know.
If what you want is to hire shopify developer time rather than commission a project, ask for that directly. We do it as a block of days with a named developer, and it suits a team that already knows what it wants built and only lacks the hands.
Where this fits
Everything around a Shopify development project
More of what we build
Migrating onto Shopify
Questions
Straight answers
Do you work with Shopify Plus?
Yes. We are a Shopify Plus Partner and build Plus features including Shopify Functions, checkout extensibility and B2B.
Can you take over a build another agency started?
Often. We audit what exists first and tell you whether continuing or restarting costs less. Sometimes the code is sound and you need a smaller fix than you were expecting.
Do you build headless Shopify stores?
When the requirement earns the complexity. Headless buys flexibility and costs simplicity, so we recommend Liquid when Liquid does the job and headless when it genuinely does not.
Who owns the code you write?
You do. Everything ships into your Shopify account and your repository, and you can hand it to another developer whenever you want.
Can you work alongside our in-house developers?
Yes. We share the repository, agree the branching model up front and review each other’s pull requests. A good share of our work sits alongside an in-house team, filling the gap they do not have capacity for.
Can we hire a Shopify developer through you, or is it agency-only?
You get a named senior developer on your build, not a queue. The difference from hiring a contractor directly is what sits behind them: code review, a second pair of eyes on anything that touches checkout, and cover when someone is ill. We are London-based and work with brands across the UK and the US.
Do you support the store after launch?
Yes, either as retained work or a fixed scope when something specific needs doing. Nothing obliges you to keep us on for the code to keep running.
Do you build ecommerce sites on platforms other than Shopify?
No. We build on Shopify and we migrate stores onto it, which is a narrower answer than most agencies give and it is the true one. If you are committed to staying on WooCommerce or Magento you want a specialist in that platform, not us. If you are undecided, that is a conversation worth having before anybody writes code.
What does an ecommerce build cost?
It moves with how much of the store is bespoke rather than with your revenue. A build that leans on Shopify doing what it already does well costs a fraction of one where the merchandising rules, subscription logic or ERP sync all need writing. We would rather scope against what your catalogue actually needs than quote a band and work backwards into it.
How long does an ecommerce build take?
Weeks rather than months for a straightforward catalogue on a clean brief. What stretches it is almost never the products: it is the integrations, the payment or tax edge cases nobody mentioned at kick-off, and decisions waiting on someone who is on holiday. We front-load those because they are what actually sets the date.
Do we need a custom build, or would a theme do?
A theme is the right answer more often than an agency will tell you. If you are still proving the product sells, buy a good theme, spend the difference on finding customers, and come back when the store is the constraint. Custom earns its cost once a theme is stopping you doing something the business needs.
Is this ecommerce development generally, or specifically Shopify?
Specifically Shopify and Shopify Plus, which is worth being upfront about. General ecommerce site development covers platforms we do not build on, and ecommerce development solutions elsewhere might mean Magento, BigCommerce or a custom stack. If Shopify is not the right platform for you we will say so, but building on it is what we actually do.
What should I look for in a Shopify development company?
Whether they have shipped stores that actually make money, not just stores that load. A lot of shopify website development work in this market is theme installation with a new logo, and it shows the moment real traffic and real orders arrive. Ask to see a build under load, not a demo store.
How is an ecommerce web development agency different from an ecommerce development company generally?
Mostly just which word they picked. An ecommerce development company, an ecommerce web development company and an ecommerce web development agency are describing the same kind of supplier in practice, and ecommerce web development services is simply the plural framing of the same thing. What actually differs between suppliers is the platform they specialise in, which is the question worth asking rather than the label on the door.
Are you a Shopify developer UK brands can work with directly?
Yes, and directly is the operative word: you talk to the people writing the code rather than through an account layer. Whether you searched developer shopify or the other way round, the thing worth checking of any supplier is whether the person scoping the work is the person who will do it, because that is where estimates and reality separate.
What does an ecommerce website development company do that a freelancer can’t?
Cover, mostly. A freelancer is one person’s calendar; if they are on holiday or hit a problem outside their experience, the build stops. An agency puts a second developer’s eyes on anything that touches checkout or payments, and someone senior reviews the code before it ships. For a small brief with a simple catalogue, a good freelancer is often the cheaper and equally capable choice, and we will say so rather than talk you out of it.
Start a conversation
Tell us what the store needs to do.
Not what it should look like. If we are the wrong people for it, we will tell you that on the call rather than three weeks into a scope.
UK and US brands buy this from the same senior team, and the American day is covered from the start of it rather than the end. How we work with US brands.
Get in touch