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Shopify developers for stores that have outgrown the theme (and the app pile)

Our Shopify developers extend the store you already run with custom Liquid sections, app integrations, checkout extensions and Shopify Functions. Your theme gets more capable and lighter at the same time.

  • Works on your live store
  • Every change staged first
96
Lighthouse performance on a launched build
$6.01
per enquiry on a client build
400 +
engineering checks before release
100+ clients
AHPRA and TGA ad policy
Australian owned
Google Partner, certified
Meta Partner, certified
Privacy Act compliant
TikTok Ads, certified

We'd rather show you than tell you.

Partner badges you can look up, numbers straight from client dashboards, and the businesses whose websites we've built. Here's the scoreboard so far.

$6.01 per enquiry on a client build 96 Lighthouse performance score 400+ checks before every release Built to WCAG 2.2 AA

What we do

What is your website for?

What clients say about the build

Two people sitting outdoors looking at a tablet together, one of them using a power wheelchair
“The entire process was seamless, easy, and incredibly user-friendly. They were patient and flexible with all the changes and back-and-forth... Most importantly, they absolutely nailed the brief.”
Read the case study

5 stars Google review

Shallon Duck Google review

What is included

Every line in the theme should help something sell.

Our Shopify developers follow 4 rules inside a live store. They keep it fast and keep the checkout safe.

  1. We write Liquid sections with settings your team can use in the theme editor. So the next layout doesn't need a developer.

    How a build runs
  2. Custom checkout behaviour goes through checkout extensions and Functions. Shopify maintains those parts, so an upgrade won't undo the work.

    See the work
  3. We start where the money changes hands. The product page and the cart get attention before the homepage does.

    The proof we show
  4. We check speed and add to cart rate before and after each change. A feature that costs sales gets caught in days.

    Questions people ask

The argument

Why stores slow down one app at a time.

New features

Website Development Group

Built into the theme

A section your team can place on any page.

Generalist build

Another app installed

Another script on every page load.

Checkout

Website Development Group

Extended the supported way

Checkout extensions that survive platform updates.

Generalist build

Patched with workarounds

It breaks the week Shopify ships a change.

Discounts

Website Development Group

Logic in a Function

Rules run on Shopify, away from the browser.

Generalist build

Stacked discount apps

Codes that fight each other at the till.

Theme edits

Website Development Group

Staged on a copy

Previewed, approved, then published.

Generalist build

Edited on the live theme

Customers see the mistake first.

Speed

Website Development Group

Measured on product pages

Script weight checked on every release.

Generalist build

Checked on the homepage

The pages that sell stay slow.

How it runs

From first call to launch, minus the headaches.

You see the page plan before design starts, and the design before we build. So there are no nasty surprises at the end.

Week 1

Theme audit

We read the theme and the app list, measure the pages that sell, and find what's loading that nobody asked for.

What we deliver

  • App and script inventory
  • Product page speed baseline
  • Theme code review
  • Fixed quote with line items
A business owner laughing during a video strategy call on his laptop, in a light-filled room with a window behind him

Weeks 1 to 2

Plan

Each change is written up as a section, an extension or a Function. The apps it can replace are named right beside it.

What we deliver

  • Change list with reasons
  • Apps to keep or remove
  • Section designs
  • Release order
A crowd of people crossing a busy city street, shot from above with their movement blurred

Weeks 2 to 5

Build

We build on a copy of your theme, in version control. Your live store keeps trading while the work happens.

What we deliver

  • Custom Liquid sections
  • Checkout extensions
  • Shopify Functions
  • App integrations
Three colleagues around a table of laptops, one standing and gesturing at a screen while the other two look on

Weeks 5 to 6

Staging QA

Every change is tested with your own products, discount codes and test orders before anyone presses publish.

What we deliver

  • Preview theme for sign-off
  • Checkout test orders
  • Speed compared to baseline
  • Accessibility pass
Blue and lime patch cables plugged into a rack panel and sweeping away in order

Week 6

Release

We publish at a quiet hour and watch the days after. The previous theme stays one click away.

What we deliver

  • Scheduled theme publish
  • Rollback theme retained
  • Post-release measurements
  • Section guide for your team
A shop owner standing in his plant shop holding a potted plant, shelves of plants behind him

The long read

Where a Shopify developer earns the fee.

Shopify does most things well out of the box. The work worth paying for is in the gaps, and in keeping them from filling up with apps.

Every app leaves something behind

An app solves one problem and adds its script to every page, including the pages where it does nothing.

Uninstall it and the script often stays, tucked into the theme files where nobody looks.

Most of the speed we win back on a Shopify store comes from finding those leftovers. Then we build the useful parts into the theme itself.

Page weight as apps are added
App scripts The theme itself

Illustrative: the pattern app weight tends to follow, not a measurement of your store.

Checkout isn't the place for a clever hack

The checkout is the most expensive page to break. It's also the one Shopify changes most carefully.

Anything we add there goes through checkout extensions and Functions. Those are built to keep working when the platform moves.

A workaround that saves a week today can cost a weekend of lost orders later.

Development and a store build are different jobs

This work assumes the store exists, has products, and is taking orders.

If you're starting a business, or moving onto Shopify, that's a store build. It's a different engagement with a different scope, covering catalogue, design and launch.

Plenty of stores do both, in that order.

When an app is the right answer

Sometimes a well-built app does the job better than custom code would, and its makers keep it working for you.

Reviews, subscriptions and complex shipping often fall in that group. If there's a good app for the problem, we'll point you at it.

What we won't do is install 3 apps to cover for 1 missing section.

Share the theme.We'll show you what it's carrying.

  • Works on your live store
  • Every change staged first

Case studies

Our work, so you can
judge for yourself.

Speech Clinic

A speech therapy website built to rank in the suburbs it serves

A search-led structure giving each therapy and each mobile service area its own page to land on.

Scope of work

  • Search architecture
  • Page templates
  • Local SEO
Read the case study
7areas
a page each
10suburbs
service areas

MedPrescribe

An e-prescribing platform website that sells like a product

An e-prescribing platform positioned as a product, automating booking through to delivery.

Scope of work

  • Product positioning
  • UX writing
  • Design system
Read the case study
6steps
booking to delivery
70%
less admin, their figure

First Class First Aid

A first aid course website employers can book in one go

A booking site built around the codes employers send, not the course names.

Scope of work

  • Booking flow
  • Course templates
  • Schema
Read the case study
6units
accredited, a page each
3yr
certification explained

Ovaya

A fertility treatment website that answers every question before the consult

An at-home fertility treatment page answering what arrives, when, and who watches each cycle.

Scope of work

  • Content strategy
  • Page design
  • Compliance review
Read the case study
2min
to self-administer
1wk
consult to doorstep

Full Body MRI

A full body MRI website patients find by the condition they search

A whole-body screening scan surfaced by the organ or condition people actually search for.

Scope of work

  • Information architecture
  • Copywriting
  • Technical SEO
Read the case study
14organs
in a single scan
500+
conditions screened

Search proof

The scoreboard, straight from client dashboards.

SEO dashboard showing organic traffic climbing from near zero to 273,770 monthly visitors with 57,773 ranking keywords
SEO: organic traffic grew from near-zero to 273,770 monthly visitors and 57,773 ranking keywords in under 12 months.
Google Search Console graph showing impressions surging from near-zero to over 3,000 per day within 10 weeks
Search Console: impressions surged from near-zero to over 3,000 a day within 10 weeks of engagement (2022).
SEO dashboard showing organic traffic spike from near zero to 34,163 monthly visitors with 15,741 ranking keywords
SEO: organic traffic grew from near-zero to 34,163 monthly visitors with 15,741 ranking keywords.
Google Search Console graph showing clicks rising from under 50 to over 300 per day within three months
Search Console: clicks grew from under 50 a day to over 300, and impressions from 2K to 18K, within 3 months.
SEO organic keywords chart showing growth from under 500 to 6,870 ranking keywords between 2020 and 2021
SEO: organic keywords grew from under 500 to 6,870 ranking keywords between March 2020 and December 2021.
Google Analytics chart showing sessions growing from 1,200 to over 20,000 per month over approximately five years
Analytics: sessions grew from 1,200 a month to over 20,000, a 1,567% increase (2015 to 2018).
Rank tracker chart showing organic keyword rankings growing from near-zero to over 26,000
Rank tracker: organic keywords grew from near-zero to over 26,000 tracked keywords by 2018.
Organic traffic chart showing recovery from near-zero to over 3,000 monthly visitors after intervention
Rank tracker: organic traffic recovered from near-zero to over 3,000 monthly visitors after we were brought in to fix it (2017 to 2019).

Shopify Partner

Shopify stores built so search can read the whole catalogue, with tracking on every sale.

Google Partner

Partner status you can look up in Google's own directory. Every result above comes with the screenshot behind it.

Book a free strategy call

Where we work

Which industry are you in?

Engagements

Two shapes, both scoped against your theme.

  • Theme sections
  • Speed audit
  • Product schema
  • Staged releases
  • Section guide
  • WCAG 2.2 AA

Fix what slows you

Theme sprint

For a store that works but has grown heavy, with a short list of things to fix.

  • App and script audit
  • Unused apps removed cleanly
  • A handful of custom sections
  • Product page speed pass
  • Rollback theme retained
Book a free strategy call

Extend the store

Custom development

For a store that needs features the theme and the app store can't give it.

  • Everything in the theme sprint
  • Checkout extensions
  • Shopify Functions for discounts or delivery
  • Integrations with your other systems
  • Before and after measurements
  • Section guide and handover
Book a free strategy call
  • Astro
  • WordPress
  • Shopify
  • Next.js
  • React
  • Vue.js
  • Svelte
  • Node.js
  • Tailwind CSS
  • Vercel
  • Netlify
  • Cloudflare
  • WooCommerce
  • Sanity
  • Vite
  • npm
  • Figma
  • Sketch
  • Framer
  • Webflow
  • Adobe
  • Google
  • Google Analytics
  • Google Search Console
  • Google Tag Manager
  • Google Ads
  • Google Fonts
  • Google Cloud
  • Lighthouse
  • Google Gemini
  • OpenAI
  • Anthropic
  • Claude
  • Perplexity
  • Midjourney
  • Hugging Face
  • Visual Studio Code
  • JetBrains
  • Sublime Text
  • Git
  • GitHub
  • GitLab
  • Docker
  • HubSpot
  • Xero
  • Stripe
  • Notion
  • Linear
  • Best Practice
  • Cliniko
  • Coreplus
  • Evermed
  • GetScripted
  • Halaxy
  • HealthEngine
  • HealthShare
  • HICAPS
  • HotDoc
  • Klaviyo
  • Mailchimp
  • MailerLite
  • Medical Director
  • Medirecords
  • Nookal
  • ShiftCare
  • SmartRecruiters
  • Sparrowhub
  • Splose
  • Zanda Health

Tools and integrations

Your website talks to the software you already run.

We pick the platform that suits your business. Then we connect the site to your booking system, your CRM and your ad accounts, so every enquiry lands where your team already works.

Talk through your setup

Client results

Straight from the people who hired us.

babybub Client testimonial
“Up until working with Casey, we had only had poor to mediocre experiences outsourcing work to agencies... instead of needing babysitting like the other agencies we worked with, he was not only completely dependable but also gave us sound suggestions on how to get better results.”
Chris Jellis Domain Health
“Since going with Casey and his team, we have had nothing but wins! They are great communicators, but more importantly, have got awesome results with low lead costs.”
Anneke Founder, Gentle Wombat
“As an experienced health professional I am a hard sceptic. Casey and his team over delivered on my project with an A+ website design having actively listened to every point I was seeking.”
Monica T Google review
“Casey has been an absolute standout! His personalised approach has been nothing short of incredible. We have had amazing results from the get-go.”
Allan Tomlinson Google review
“Excellent company to deal with and their web design is incredible. Would use them again and again.”
Stephanie Poma Google review
“Casey was so empathetic and patient in listening to my ideas. He asked all the right questions and got me thinking on aspects I hadn't considered. He goes above and beyond.”

5.0

5-star Google rating

Book a free strategy call
Jack Duke Care Speech Pathology
“If you're looking for a highly experienced, knowledgeable and ideas-driven marketing agency, look no further... He's helped transform our business from a fairly humble start-up to a fast growing and highly regarded service provider.”
Storm Parker Google review
“We have worked with Casey on a number of website projects and are super impressed with his promptness, communication, professionalism, and knowledge of the full suite of digital marketing... You and your team are second to none!”
Mark Anthony Valle Google review
“[They have] truly exceeded my expectations... They handle every detail with care, addressing any concerns or inquiries I had with remarkable responsiveness and genuine accommodation. The end result was nothing short of fantastic.”

Research & Articles

Worth a read before you hire anyone.

All articles
Ceramic and brass vases on a stone table in slatted window light, styled like a product shot

Ecommerce 7 min read

Product page design that answers the buyer

Product page design for online stores: what to show, in what order, and what Australian Consumer Law expects of your prices, returns and reviews. A checklist.

Hands holding a phone showing a short form with a blue submit button

Conversion 7 min read

Conversion tracking that survives cookie consent

Conversion tracking breaks when people decline cookies or block scripts. How consent mode and server-side events keep your lead numbers useful and private.

Questions

What people ask before hiring a Shopify developer.

What you need to know before we start a conversation.

Not answered here? Ask us directly

Can you work on our existing theme?

Yes, that's the usual case. Our Shopify developers work on a copy of your live theme, so the store keeps trading. Nothing changes for customers until you approve it, and the old theme stays one click away after release.

Will you remove apps we are paying for?

Only the ones we can replace with something lighter, and only with your say. When an app goes, we clean its leftover code out of the theme as well. That's often where the biggest speed gains hide.

Can you customise the checkout?

Within what Shopify supports, yes. We use checkout extensions for layout and content, and Functions for discount, delivery and payment rules. If your Shopify plan limits what's possible, we'll tell you before you pay for anything.

Is this the same as a Shopify store build?

No. This page is about extending a store that already trades. Starting a business, or moving onto Shopify from another platform? Our Shopify store build service covers that, from catalogue to launch.

How do you price Shopify work?

You get a fixed quote with line items, set against a written change list, after a free 15-minute call. If something new comes up mid-sprint, we quote it separately, so the original price holds.

Will the changes affect our search rankings?

They should help. Lighter product pages and correct product schema are both things Google reads. We check that neither goes backwards on release. We won't promise rankings, because nobody honest can.

Do you work with health and wellness brands?

We do, and product copy in that space carries advertising rules. We build sections so claims and disclaimers sit where they need to on every product. You stay responsible for your advertising. Written to the guidelines by our copywriting team. Not legal advice.

Book a free strategy call