Available for new projects

Helping brands sell more through fast, conversion-focused Shopify stores.

Shopify expert building custom themes, migrations, custom apps and headless Hydrogen storefronts that load fast, rank well and turn browsers into buyers.

  • Shopify & Shopify Plus
  • Custom Liquid Themes
  • Headless Hydrogen
  • CRO & Speed
  • Store Migrations
Kartio Developer logo

+43%

Avg. conversion lift

80+

Stores launched

Built with the tools teams trust

  • Shopify
  • Shopify Plus
  • Liquid
  • Hydrogen
  • Oxygen
  • Klaviyo
  • Recharge
  • Shopify Markets
  • Judge.me
  • Shopify Payments
  • Shopify
  • Shopify Plus
  • Liquid
  • Hydrogen
  • Oxygen
  • Klaviyo
  • Recharge
  • Shopify Markets
  • Judge.me
  • Shopify Payments

0+

Years on Shopify

0+

Stores launched

0+

Brands served

0

Countries reached

0%

On-time delivery

< 0h

Avg. response time

What I do

Shopify Services Built For Revenue

Every engagement is designed around one thing — a Shopify store that sells more than it did before.

Shopify Store Setup & Launch

A complete, launch-ready store — products, payments, shipping, taxes and a theme built around your brand.

Launch in 2–3 weeksLearn more

Custom Theme Development

Bespoke Liquid themes and Online Store 2.0 sections your team can edit without touching code.

Pixel-perfectLearn more

Conversion Rate Optimisation

Fix the leaks between product page and checkout — data first, opinions second.

+43% avg. liftLearn more

Store Migrations

Move from WooCommerce, Magento, Wix or BigCommerce to Shopify without losing rankings or data.

Zero data lossLearn more

Custom Apps & Integrations

Private Shopify apps and integrations that connect your store to the tools your business already runs on.

Built to fitLearn more

Speed & Shopify SEO

Faster stores rank better and sell more — technical SEO plus a measurable Core Web Vitals pass.

90+ PageSpeedLearn more

Headless Commerce (Hydrogen)

React-based Hydrogen storefronts on Oxygen when a standard theme can't deliver the experience you need.

Sub-second loadsLearn more

Ongoing Shopify Support

A dedicated Shopify developer shipping fixes, features and CRO tests every single month.

Compounding valueLearn more
Case studies

Real Stores. Real Numbers.

A selection of products I have designed, built or rescued — and the measurable impact each one delivered.

Shopper browsing an online clothing store on a phone while holding a credit card
Fashion & Apparel

Orbit Apparel

Challenge:
A slow Shopify theme losing mobile buyers before they reached checkout.
Solution:
Custom theme rebuild with sticky add-to-cart, instant search and a streamlined two-step checkout.

+43%

Conversion rate

-58%

Load time

+38%

Avg. order value

Laptop screen showing store analytics charts and revenue graphs
Health & Subscriptions

Pulse Supplements

Challenge:
One-off purchases only, with no repeat revenue and a leaky post-purchase flow.
Solution:
Recharge subscriptions, a bundle builder and Klaviyo win-back flows wired into the theme.

+61%

Repeat revenue

2.4×

Customer LTV

+27%

Email revenue

Developer reviewing store code across a multi-screen desk setup
Platform Migration

FieldKit Outdoors

Challenge:
An ageing WooCommerce store with constant downtime during peak sales.
Solution:
Full migration to Shopify with mapped redirects, rebuilt collections and preserved rankings.

0

Rankings lost

99.9%

Uptime

Faster admin

Designer reviewing a beauty brand storefront layout on a large monitor
Headless Hydrogen

Vertex Beauty

Challenge:
A heavy theme with app bloat capping PageSpeed in the low 30s.
Solution:
Headless Hydrogen storefront on Oxygen with a quiz-driven PDP and an optimised image pipeline.

94

PageSpeed

Organic traffic

+51%

Add-to-cart rate

My process

A Repeatable Path To A Better Store

No guesswork and no fluff — the same proven framework on every single project.

  1. 01

    Discovery

    Understanding your products, customers and revenue goals.

  2. 02

    Store Audit

    A technical, UX and conversion review of your current store.

  3. 03

    Strategy

    A prioritised roadmap tied to revenue, not vanity metrics.

  4. 04

    Design

    Conversion-focused storefront and product page design.

  5. 05

    Development

    Clean Liquid, custom sections and tested integrations.

  6. 06

    Launch

    QA across devices, redirects, analytics and a smooth go-live.

  7. 07

    Optimise

    Ongoing CRO tests, speed work and new features every month.

Why Kartio

A Shopify Partner, Not Just A Coder

A partner, not a vendor

You get one Shopify specialist who owns the outcome from first call to post-launch growth.

Built for revenue

Every decision maps to conversion rate, average order value or repeat purchases.

Clear, jargon-free updates

Weekly progress notes in plain language, with a preview store you can click through.

Merchant-friendly code

Editable sections and clean Liquid, so your team can run the store without a developer.

Stack

Shopify Skills & Stack

Shopify Development

  • Liquid & Online Store 2.0
  • Custom sections & blocks
  • Theme architecture
  • Dawn & Horizon
  • Metaobjects & metafields
  • Checkout extensibility

Apps & Integrations

  • Shopify Admin & Storefront API
  • Custom & private apps
  • Klaviyo & email flows
  • Recharge subscriptions
  • ERP / 3PL sync
  • Payments & shipping setup

Growth & Performance

  • CRO & A/B testing
  • Shopify SEO
  • Core Web Vitals
  • GA4 & server-side tracking
  • Shopify Markets
  • Store migrations
Pricing & packages

Choose The Right Plan

Transparent starting prices, tailored to the scope of your project after we talk.

Store Launch

New brands that need a clean, converting Shopify store live fast.

Starting from

$500

Launch my store

What's included

  • Premium theme setup & branding
  • Up to 20 products configured
  • Payments, shipping & tax setup
  • Mobile-first design pass
  • Basic Shopify SEO
  • Speed optimisation
  • Domain & go-live
  • 14 days post-launch support
Most popular

Custom Build

Growing brands that need custom sections, apps and real conversion work.

Starting from

$1,200

Build my store

Everything in Store Launch, plus

  • Custom Liquid sections & blocks
  • Metafields & metaobjects
  • Upsells, bundles & subscriptions
  • Klaviyo flows & integrations
  • Advanced technical SEO
  • CRO pass on PDP, cart & checkout
  • Analytics & tracking setup
  • 30 days priority support

Growth Partner

Established Shopify & Plus merchants who want a long-term dev partner.

Starting from

$2,500/month

Let's work together

Everything in Custom Build, plus

  • Dedicated monthly development time
  • Continuous CRO testing
  • Ongoing SEO & speed work
  • App, theme and security updates
  • Campaign & launch support
  • Priority same-day response
  • Quarterly growth roadmap
Testimonials

What Clients Say

Kartio rebuilt our Shopify theme in six weeks and conversion is up over 40%. Communication was excellent the whole way through.
ABA. BelloFounder, Orbit Apparel
Subscriptions and bundles finally work the way we imagined. Repeat revenue is the healthiest it has ever been.
SKS. KimaniEcommerce Manager, Pulse Supplements
The migration to Shopify was seamless — no lost rankings, no downtime, and the store loads in under a second.
JOJ. OkaforHead of Digital, FieldKit
FAQ

Everything You Might Be Wondering

Still have questions?

Email kartiodeveloper@gmail.com
Let's build

Ready to turn your idea into a working product?

Book a free 20-minute consultation and I'll map out the fastest path to launch — no strings attached.