What does a Shopify development agency do?

We handle the technical side of building and growing your store – from custom theme development and bespoke features to apps, API integrations, performance work and ongoing development support. In short, anything that goes beyond what an off-the-shelf theme can do on its own.

Do you build fully custom Shopify stores or work with themes?

Both – it depends on what your store actually needs. Some brands are best served by a fully custom build; others by a solid theme foundation extended and tailored to fit. We recommend the approach that fits your stage, goals and budget, not the one that bills the most hours.

Can you work on an existing Shopify store?

Yes – a lot of our work is on live stores. Whether you need new features, integrations, performance improvements or custom functionality, we can pick up an existing codebase and build on what's there.

Can you integrate Shopify with our other systems?

Yes – ERP, CRM, loyalty, subscriptions, fulfilment, PIM, custom APIs and more. We build clean, maintainable integrations that connect Shopify to the rest of your stack properly, so everything works as one system.

How long does a Shopify build take?

It depends on scope – a focused feature build is a few weeks, a full custom store is longer. We lock scope and timeline during discovery, then deliver in clear sprints so you always know what's coming and when.

Do you offer ongoing support after launch?

Yes. Once your store is live, we offer ongoing development retainers for new features, technical support, performance monitoring and continuous improvement as your business grows.

Can our team edit the store without a developer?

Yes. We build flexible sections and blocks in the Shopify theme editor, so your team can create pages, swap images and change copy on their own.

Home

Services

Shopify Development

Shopify Development

Shopify Development That Scales

Fast, scalable Shopify stores built to sell. Custom where it counts, clean code throughout.

Start your project

Book a strategy call

Speak directly with the team that builds it. No account managers, no hand-offs.

5.0

Based on 35 reviews

300+

Shopify stores built

100%

Job Success Score

Certified

Shopify Partner

Brands we've designed for

Is this you?

When you need custom Shopify development

If any of these sound familiar, you're in the right place, and a quick call will tell you exactly what your store needs.

Get a free scope

You're launching a new brand

and want a fast, scalable store built right the first time and ready to grow into.

Your theme can't do what you need

custom functionality, bundles, B2B logic or a unique buying flow that off-the-shelf themes won't support.

You need integrations apps don't cover

ERP, CRM, custom checkout, subscriptions or a third-party API connected properly.

Your store is slow and it's costing sales

sluggish load times, poor Core Web Vitals, drop-off you can feel in revenue.

You're scaling and your setup won't keep up

outgrowing your theme, adding markets, or heading toward Shopify Plus.

Why Teplin

Shopify development built to perform and scale

Whether we're building from scratch or extending an existing theme, the standard is the same. We deliver clean code, real performance and a store built to grow with you.

Creating Value

01/05

The right build for where you are

New brands don't need the same thing as brands doing seven figures. We scope the right approach, whether a custom build or a tailored theme foundation, based on your stage, goals and budget. Not the option that bills the most hours.

02/05

Shopify-native by default

We build inside Shopify's architecture with Liquid, Metafields and the Storefront API. No third-party page builders, no code debt, no compatibility surprises a year from now.

03/05

Built to be maintained

Clean, documented code your team can manage and future developers can build on without reverse-engineering what we did.

04/05

Performance from the first line

Fast stores aren't luck. Every build is optimised for Core Web Vitals, lean assets and minimal requests from day one. That's how we hit sub-2s loads and 95+ Lighthouse.

05/05

Built to scale with you

We don't build for where your store is today. We build for where it's going. Clean architecture and room to grow, so your next stage doesn't mean starting over.

Not sure which approach fits?

Tell us where your store is today and we'll tell you straight what it needs.

Get a free scope

What's included

Everything in our Shopify development service

From scoping and architecture through to build, QA and launch, we handle the full technical delivery, so nothing falls through the cracks.

Custom Shopify development

Built for where your store is and where it's going

Most brands don't migrate for fun. They migrate because their current platform is costing them. Downtime during sales. Developer invoices for small changes. Security patches and hosting bills. A checkout they can't customise.

We build for both. Whether that's a clean first build or untangling a store that's hit its ceiling, we make Shopify work harder without the code debt, the bloat or the rebuild you'll need again in a year.

Start a conversation

Clean code

Shopify-native

Tech & tools

The Shopify stack we build on

We work across the full Shopify ecosystem, from Liquid themes to headless storefronts and custom apps. If Shopify can do it, we can build it.

Liquid & Online Store 2.0

Theme & Storefront APIs

Metafields & Metaobjects

Shopify Functions

Shopify CLI

TypeScript & JavaScript

GraphQL Storefront API

Tailwind / custom CSS

Hydrogen & Oxygen

React & Next.js

Custom & private apps

Node.js & Remix

Admin & GraphQL APIs

Webhooks & Flow

Shopify Plus & B2B

ERP & PIM (SAP, NetSuite…)

Recharge & subscriptions

CRM & Klaviyo

Gorgias, Yotpo, Loop

Any third-party API

Our process

How we build your Shopify store

A structured, low-risk path from assessment to launch, designed for the higher stakes of enterprise stores.

01

Discovery & scoping

We map every requirement, integration and constraint before any code is written, so scope is locked and the build runs smoothly.

02

Design & build

Custom development and feature builds delivered in clear sprints. You review progress at each milestone before we move forward.

03

QA & launch

Every build is tested across devices, browsers and edge cases. Performance and Core Web Vitals checked before we deploy live.

04

Support & grow

A smooth handover, post-launch fixes, and the option to keep improving the store on a retainer with the same team.

Selected work

Shopify builds we've shipped

Custom development across beauty, supplements and fashion, built to perform.

Shopify

Thrsty

One-product electrolyte brand launched with a subscription-first Shopify store in 30 days.

30 days to launch

3.13% CVR

View case study

Shopify

Spamigo

Shopify redesign for a Canadian hot tub cover brand and a new store for its U.S. launch.

x3 Sales

↓44% BR

View case study

View all work

Build it, then grow it

Launch is where the growth starts

The team that built your store knows it best. Most clients keep us on a retainer to improve it every month.

Explore retainer plans

Let's talk Shopify

Got a Shopify build in mind?

Whether you're launching a new store or rebuilding one that's outgrown its setup, we'd like to hear about it.

One-time project

Build

A fixed-scope build with clear deliverables you own.

Get a free proposal

Ongoing retainer

Extend

Monthly dev, CRO and design from one senior team.

Explore retainer plans

Or just book a call, and we'll talk it through.

Related services

Often paired with development

Questions? Answers.

Book an intro call

Time to get introduced and explore how Teplin Agency can help.

Book a call

Do you prefer email communication?

tamara@teplin.agency

Teplin builds custom Shopify themes, sections and features with Liquid, Online Store 2.0 and the latest Shopify APIs. We turn Figma designs into pixel-accurate storefronts, extend existing themes, build product configurators and bundles, and connect your store to the tools you already use. Every build is reviewed for performance and accessibility, documented and handed over so your team can manage content without a developer. From one new section to a full theme rebuild, the code stays maintainable as your store grows.

More about us

Book an intro call

Shopify Development That Scales

When you need custom Shopify development

Shopify development built to perform and scale

The right build for where you are

Shopify-native by default

Built to be maintained

Performance from the first line

Built to scale with you

Not sure which approach fits?

Everything in our Shopify development service

Technical discovery & scoping

Custom theme & store development

Custom apps, integrations & APIs

Performance optimisation

QA, testing & launch

Post-launch support

Built for where your store is and where it's going

The Shopify stack we build on

How we build your Shopify store

Shopify builds we've shipped

Thrsty

Spamigo

Launch is where the growth starts

Got a Shopify build in mind?

Build

Extend

Often paired with development

Shopify Plus

Shopify Migration

CRO & UX

Questions? Answers.

Book an intro call

Let's talk Shopify