shopify & shopify plus — development

Shopify development for conversion-focused DTC brands. Built to convert.

We build clean, fast Shopify and Shopify Plus stores designed to convert — not just to look good. Custom themes, landing pages, checkout extensibility and apps, all QA'd before anything goes live, and all built to move revenue per visitor.

95%QA pass rate before launch
QA'D BEFORE ANYTHING GOES LIVE
FAST BY DEFAULT · CORE WEB VITALS
what we build

Everything a converting store needs.

Custom themes, landing pages, checkout extensibility, apps, migrations and speed — built to your brand and your funnel.

S-01

Custom Shopify themes

Conversion-focused, fast, maintainable themes built to your brand and your funnel.

S-02

Landing pages

High-converting pages for cold traffic — evergreen and persona-led.

S-03

Checkout extensibility

Shopify Plus checkout customisation so testing extends all the way through the buy.

S-04

Apps & tooling

Custom Shopify apps — including AB Genius, our own A/B testing app.

S-05

Migrations & rebuilds

Clean migrations onto Shopify with the funnel rebuilt around conversion.

S-06

Speed & Core Web Vitals

Performance work that lifts LCP, reduces render-blocking and helps SEO.

how it's built

Development built around conversion.

Good-looking is the floor, not the goal. Every build is checked, fast and ready to test from the first commit.

Not just to look good — built to move revenue per visitor.

BUILD PRINCIPLESEVERY BUILD
P-01

Design fidelity

Every build checked against the Figma file, on every device size.

P-02

QA'd before launch

A 95% QA pass rate before anything reaches your live site.

P-03

Fast by default

Lean markup, deferred scripts and Core Web Vitals baked in.

P-04

Test-ready

Components built so experiments are quick to ship and read.

how we work

A fixed pod that carries your full context.

A fixed pod — CRO specialist, developer and QA — carries full context on your brand. Our developers direct AI coding agents that already know your design language and test history, then review and refine, so we ship more tests per month without sacrificing quality.

STEP 1
01

Fixed pod, full context

A CRO specialist, developer and QA carry full context on your brand — no handoffs, no re-briefing between agencies.

STEP 2
02

AI-directed development

Our developers direct AI coding agents that already know your design language and test history — speed without losing the brand.

STEP 3
03

Review & refine

Every build is reviewed and refined by the developer, so we ship more tests per month without sacrificing quality.

the standard

Held to a build standard.

Design fidelity, QA and speed aren't extras — they're how every build ships.

95%
QA pass rate before launch
Nothing reaches your live site until it clears QA across every device.
1:1
Figma to live, every device
Design fidelity checked against the Figma file on every screen size.
CWV
Core Web Vitals baked in
Lean markup and deferred scripts lift LCP and help SEO by default.

Built on

ShopifyShopify PlusLiquid / OS 2.0 themesCheckout extensibilityCustom appsAB Genius (our A/B app)Core Web Vitals
shopify development faq

Before you ask.

Do you build on Shopify Plus?

Yes — both Shopify and Shopify Plus. On Plus we handle checkout extensibility, so your testing extends all the way through the buy, not just up to the cart.

Do you build custom apps?

We do. We build custom Shopify apps and tooling — including AB Genius, our own A/B testing app.

How do you keep builds fast?

Performance is baked in: lean markup, deferred scripts and Core Web Vitals from the start. That lifts LCP, reduces render-blocking and helps SEO.

How is quality controlled before launch?

Everything is QA'd before it goes live — a 95% QA pass rate before anything reaches your live site — and every build is checked against the Figma file on every device size.

Can you migrate us onto Shopify?

Yes. We run clean migrations onto Shopify and rebuild the funnel around conversion rather than lifting the old store across as-is.

Who works on the build?

A fixed pod — CRO specialist, developer and QA — carries full context on your brand. Our developers direct AI coding agents that already know your design language and test history, then review and refine, so we ship more tests per month without sacrificing quality.

next step

Need a Shopify build that converts?

Book a 30-min call and we'll scope the work against your funnel and your goals.

Book a 30-min call with Paddy →
Or… email me directly → paddy@pmdigitaldesign.com
P
Paddy McLarnon
Founder & CEO — PM Digital
◉ 30 minutes · zero obligation