What is a Shopify Plus agency?

A Shopify Plus agency specialises in the enterprise tier of Shopify – building and optimising high-volume stores using Plus-only features like Checkout Extensibility, Shopify Functions, B2B/wholesale, Scripts, Launchpad and multi-store management. It's development built for brands with serious traffic, complex requirements and bigger stakes.

When should we upgrade to Shopify Plus?

Plus makes sense when you've outgrown standard Shopify – high order volume, the need to customise checkout, B2B and DTC on one platform, multiple stores or markets, or advanced automation. We'll assess your setup honestly and tell you whether Plus is worth it for your stage, rather than pushing an upgrade you don't need yet.

Can you migrate our existing store to Shopify Plus?

Yes. We migrate from standard Shopify, Magento, Salesforce Commerce Cloud, BigCommerce and other platforms to Shopify Plus – preserving data, SEO and performance with no downtime.

Do you customise Shopify Plus checkout?

Yes – using Checkout Extensibility (the modern, upgrade-safe approach) and Shopify Functions, we build custom checkout logic, upsells, validation, discounts and branding without relying on deprecated checkout.liquid.

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Services

Shopify Plus Development

Shopify Plus Development

Shopify Plus Development for High-Volume Brands

Shopify Plus builds for brands at real scale, from custom checkout to B2B and multiple markets.

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Book a strategy call

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 Shopify Plus is the right move

Plus isn't for everyone, and we'll tell you honestly if you're not there yet. But if any of these apply, it's likely worth it.

Get a Plus assessment

You're doing serious volume

high order counts and traffic spikes that standard Shopify struggles to handle smoothly.

You need a custom checkout

upsells, validation, custom logic or branding that only Checkout Extensibility and Functions can deliver.

You sell B2B and DTC

wholesale pricing, net terms and quote flows alongside your direct-to-consumer storefront.

You're going multi-market or multi-store

multiple regions, currencies, languages or storefronts to manage from one place.

You're already on Plus but underusing i

paying for the tier without tapping Functions, Scripts, Launchpad or automation. Let's fix that.

Why Teplin

A Shopify Plus partner that uses the whole platform

Plus gives you a powerful toolkit. Most stores use a fraction of it. We build with the full set, so you get every bit of the tier you're paying for.

Creating Value

01/05

Full Plus feature set

We build with Checkout Extensibility, Functions, Scripts, Flow, Launchpad, B2B and multi-store, the tools that actually justify the Plus price tag.

02/05

Built for scale & peak traffic

Architecture, caching and performance work tuned for high volume, so your store stays fast and stable through launches, drops and sales peaks.

03/05

Upgrade-safe checkout

We build checkout on Extensibility and Functions, the modern and future-proof approach, and never on deprecated checkout.liquid that breaks on the next update.

04/05

B2B + DTC under one roof

Wholesale catalogues, customer-specific pricing, net terms and quotes, built natively alongside your DTC experience instead of bolted on with fragile apps.

05/05

Multi-market & multi-store

Markets, currencies, languages and multiple storefronts, structured cleanly so expansion doesn't turn into a maintenance nightmare.

Not sure if Plus is worth it yet?

We'll look at your numbers and tell you straight, with no upsell to a tier you don't need.

Get an honest assessment

What's included

Everything in our Shopify Plus service

From upgrade planning and custom checkout to B2B, multi-store and ongoing optimisation, we handle full enterprise delivery end-to-end.

Shopify Plus

You're paying for enterprise. Use all of it.

Plenty of brands upgrade to Plus and keep running it like standard Shopify. Same theme, same apps and none of the features that make the tier worth the price. The platform is capable of far more.

We build with the full toolkit, including custom checkout, B2B, automation, multi-market and headless where it helps. Whether you're upgrading for the first time or already on Plus and underusing it, we turn the tier you're paying for into real commercial advantage.

Talk to a Plus specialist

B2B

Checkout Extensibility

Checkout Extensibility

Plus capabilities

The Shopify Plus toolkit we build with

The features that separate Plus from standard Shopify and that we use in full on every enterprise build

Checkout Extensibility

Checkout UI extensions

Scripts (legacy support)

Shopify Functions

Custom discounts & upsells

Native B2B & company accounts

Customer-specific pricing

Wholesale catalogues

Net terms & quotes

Custom B2B flows

Shopify Flow

Launchpad

Markets & multi-currency

Multi-store management

Wholesale & expansion stores

Hydrogen & Oxygen (headless)

Storefront & Admin APIs

Custom & private apps

ERP / CRM / PIM integrations

Any third-party API

Our process

How we deliver a Shopify Plus build

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

01

Assessment & scoping

We audit your current setup, confirm Plus is the right call, and map requirements for checkout, B2B, markets, integrations and performance.

02

Architecture & build

Enterprise-grade architecture and development in clear sprints, using the full Plus feature set, with milestone reviews throughout.

03

QA, load & launch

Cross-device QA plus load and peak-traffic testing. We validate checkout, B2B flows and integrations before going live.

04

Optimise & scale

Post-launch monitoring, CRO and new features, with the same senior team on an ongoing retainer if you want continuity.

Selected work

Shopify Plus brands we've built for

Enterprise builds across beauty, supplements and fashion, performing at scale.

Shopify Plus

Ovrload

Shopify redesign for a creatine gummy brand that took conversion from 2.03% to 4.6%.

4.6% CVR

+32% AOV

View case study

Shopify Plus

Nordik Recovery

Shopify Plus store for a premium ice bath brand, converting at 1.15% on a $1,700 product.

1.15% CVR

500+ orders

View case study

View all work

Build it, then grow it

Enterprise stores are never "done"

A Plus store needs continuous attention, from new markets and features to checkout experiments and performance under growing load. After launch, most Plus clients keep us on a retainer as their ongoing enterprise team, with full context and no ramp-up.

Explore retainer plans