Top Shopify Plus Development Agency

Book a discovery call
$500M
Annual client revenue
75+
Replatforms & net-new builds
5.0 (38)
Shopify Partner Directory

We are a Shopify Platinum Partner — the top tier of Shopify’s Service Track. We design, build, and maintain Shopify Plus stores for brands that have outgrown their theme, and our clients generate more than $500M a year on stores we built.

Why Solo Media Group is a top Shopify development company

Plenty of agencies list Shopify as one of a dozen platforms they support. We do one thing: Shopify. No WordPress, no Magento, no general web development. A Shopify Partner since March 2018, we hold Platinum status — the top tier of Shopify's Service Track, above Premier, Plus, Select and Registered. That focus is why brands hire us as their Shopify development company instead of a generalist shop.

Tier isn't a badge you keep. Shopify reassesses it every quarter against delivered enterprise work and commercial performance, so it reflects what an agency is doing now rather than what it did three years ago. You can check ours, and anyone else's, in the Shopify Partner Directory in about ten seconds.

We've built for 500+ merchants since 2018, including 75+ replatforms and net-new builds, and our clients generate more than $500M a year on stores we built. That volume means your project benefits from patterns we've already proven on stores like yours rather than solved for the first time on your budget.

Strategy, design, engineering and QA come from one senior team, and the same people who build your store support it afterward. Nothing gets lost in a handoff between a design shop and a dev shop, because there isn't one.

We're rated 5.0 from 38 reviews on Shopify's own Partner Directory, where Shopify verifies that reviewers are genuine clients. Any agency can choose which testimonials appear on its website. Nobody chooses which reviews appear on Shopify's.

Pricing is straightforward: design-and-build projects start at around $20,000, quoted as a line-item estimate so you can add or cut scope before signing, with ongoing retainers from 20 hours or $3,000 per month.

What to expect

$20k+
Projects from — no retainer required
8–12 wks
Typical build — focused from 4–6
Platinum
Top Shopify tier — ~86 worldwide
500+
Merchants served since 2018
5.0 (38)
Shopify Partner Directory rating

What a Shopify Plus development agency does

A Shopify Plus development agency builds and maintains stores on Shopify’s enterprise plan, handling work the platform’s standard tools can’t cover: custom theme development, private apps, ERP and POS integrations, B2B and wholesale portals, multi-store and multi-currency setups, and checkout customization through Shopify Functions.

Shopify Plus gives you the platform — up to 10 expansion storefronts under one organization, higher API limits, checkout extensibility, and native B2B. What it doesn’t give you is the engineering to use any of it. That is the gap an agency fills.

Only agencies at the Plus tier or above can access Plus-only APIs and are vetted on delivered enterprise work. Solo Media Group sits at Platinum, the top of that ladder, and has worked with over 500 Shopify merchants since March 2018 — including 75+ replatforms and net-new builds. Strategy, design, engineering, and QA come from one senior team, so you are not coordinating between a design shop and a dev shop.

Advanced Shopify features most stores never use

Shopify Plus ships with capabilities that sit unused because nobody configured them. The gap between standard Shopify plans and enterprise-level ecommerce solutions isn’t the license, it’s whether anyone built against it.

Shopify Flow and automation tools. Advanced automation for order routing, customer tagging, fraud review, inventory alerts and B2B approval workflows, without custom code. Most stores run a fraction of what’s available, and it’s usually the cheapest operational efficiency win on the platform.

Custom checkout logic. Shopify Functions for discount rules, payment customization, delivery options and validation that standard Shopify can’t express. Custom checkout experiences are where high growth ecommerce brands recover margin that generic promotions give away.

Multi-store management. Up to ten expansion storefronts under one organization, for international brands running separate markets, brands or B2B channels from a single catalog.

Headless commerce. Headless Shopify on Hydrogen or Next.js where a theme genuinely can’t deliver what the business needs. Our headless commerce guide covers the decision framework, including the cases where it isn’t worth the cost.

API integrations at scale. Higher API limits and Plus-only endpoints that make complex integrations viable where they’d throttle on standard plans.

What’s included

Custom theme development

Built on editable, well-structured themes your team can update without filing a dev ticket. Documentation and a walkthrough at handoff.

Custom apps and middleware

Shopify app development connecting Shopify to ERP systems, POS, Salesforce and other CRM systems, subscription platforms, and logic specific to your ecommerce business. Third party integrations and API integrations scoped up front so they stay maintainable. Medik8: a reusable bundle-builder app running across every market they sell in.

B2B and wholesale

Gated portals, customer-specific pricing, tax-exempt handling, and automated renewals on native Shopify Plus B2B, connected to your CRM. Elm Biosciences: a separate portal where dermatologists apply, order, and access education.

Retail and Shopify POS

Online and in-store inventory running off one source of truth, for brands with physical retail alongside DTC.

Migrations

From Magento and Adobe Commerce, Salesforce Commerce Cloud, WooCommerce, BigCommerce, OpenCart and custom platforms. Full data migration covering products, variants, customer data, order history, collections and metafields, with zero-downtime cutover and redirect mapping planned before launch rather than after. When brands migrate platforms, the two things that break are SEO rankings and data integrity, and both are preventable.

Retention and email

Klaviyo integration plus core lifecycle flows: welcome, abandoned cart, browse abandonment, post-purchase. Subscriptions on Stay.ai or ReCharge. Marketing tools connected properly so customer retention runs without manual campaigns, because improving customer retention is usually cheaper than acquiring the equivalent revenue.

Analytics and feeds

GA4, Google/Meta/TikTok pixels, product feeds, and review syndication to Google Shopping — configured before launch.

Ongoing engineering and optimization

Most clients stay with us for years rather than treating launch as the finish line. Ongoing Shopify work covers new custom features, ongoing optimization, performance monitoring and iterative improvements aligned to your business goals. Retainers from 20 hours or $3,000 per month.

Site speed and performance optimization

Site performance is a conversion problem before it’s a technical one, and on mobile it’s usually the largest single drag on an ecommerce store.

We target 90+ PageSpeed scores on mobile, and the work is unglamorous: code optimization, image handling, third-party script auditing, CDN configuration and Core Web Vitals remediation. Most slow Shopify stores aren’t slow because of the platform. They’re slow because six apps inject scripts on every page load and nobody has audited them since launch.

Performance work is tested rather than assumed, with before-and-after measurement on real user metrics rather than a lab score.

What it costs

Most Solo Media Group design-and-build projects start at around $20,000. Ongoing retainers start at 20-hour engagements or $3,000 per month. Every project is quoted as a line-item estimate, so you can see what each piece costs and add or cut scope before signing.

FactorEffect on cost
Net-new build vs. migrationMigrations add data mapping, redirect planning, and integration rebuild
Number of integrationsEach ERP, CRM, or POS connection is scoped separately
Custom appsBespoke functionality costs more than configuration
Catalog size and order historyLarge catalogs extend migration scope
B2B or multi-storePortals, pricing rules, and expansion stores add build time
Design scopeFull brand-led design vs. building from your existing Figma files

Billing runs against milestones — a percentage on signing, at design approval, at development start, and at launch. Invoices are net 15. The schedule is agreed in the statement of work before work begins.

Your Shopify Plus license is purchased directly from Shopify and is separate from agency fees.

How long it takes

A typical new Shopify Plus build takes 8–12 weeks from design kickoff to launch. Focused builds can ship in 4–6 weeks. Migrations depend on data volume and integration complexity.

The largest variable is not our capacity — it is feedback speed. One decision-maker giving prompt, consolidated feedback each round moves fast. Multiple stakeholders with long review cycles extend the timeline.

When a date is fixed for a retail debut or a seasonal launch, we compress the design phase and run design teams in parallel.

How we work

Seven stages, in order, every time. Your team sees the same faces from discovery through launch.

1

Discovery

Brand exercise, asset collection, competitive landscape, mood board. Exact data scope for migrations is confirmed here.

2

Concepts

Early creative directions that establish visual language and tone before full design begins.

3

Full site design

Iterative design of every key page in Figma.

4

Handoff to engineering

Final designs delivered with engineering notes.

5

Build

Theme development, custom apps, integrations. All work in version control, so every change is reviewed and reversible.

6

QA

Cross-device and cross-browser testing, checkout and integration testing, pre-launch bug fixing.

7

Launch, plus 30 days

A 30-day post-launch support window for fixes on original scope. A retainer covers what comes after.

Who works on your project: a Shopify solution engineer on architecture, engineers on development and custom apps, e-commerce designers, a Klaviyo specialist for retention, and a project lead running communication. The same team throughout — no handoff to junior staff after the pitch.

We work in your tools: your project management system, a shared Slack channel, weekly syncs, and transparent time reporting.

Huk Gear Case Studies + Modernized Huk Gear's platform — case study

HUK Gear

Outdoor apparel · Retail at scale

HUK Gear

Outdoor apparel · Retail at scale

HUK Gear

Apparel Fashion
ELM Biosciences

Elm Biosciences

Life sciences · B2B expansion store

Elm Biosciences

Life sciences · B2B expansion store

Aspen Publishing Case Study: How We Migrated and Optimized Their Shopify Store — case study

Aspen Publishing

Education · Complex product backend

Aspen Publishing

Education · Complex product backend

Aspen Publishing Case Study: How We Migrated and Optimized Their Shopify Store — case study

Aspen Publishing

Education · Complex product backend

Aspen Publishing

Education · Complex product backend

Aspen Publishing

Educational eLearning Literature
Medik8 Case Studies + Custom Shopify theme and bundle app — case study

Medik8

Beauty · Custom app

Medik8

Beauty · Custom app

Medik8

Beauty
Lifelines

Lifelines

Consumer goods · DTC launch and retention

Lifelines

Consumer goods · DTC launch and retention

Woods By Jordyn Case Studies + Web redesign — case study

Woods By Jordyn

Fashion · Web build

Woods By Jordyn

Fashion · Web build

Woods By Jordyn Case Studies + Web redesign — case study

Woods By Jordyn

Fashion · Web build

Woods By Jordyn

Fashion · Web build

Woods By Jordyn Case Studies + Web redesign — case study

Woods By Jordyn

Fashion · Web build

Woods By Jordyn

Fashion · Web build

Woods By Jordyn

Apparel Fashion
Manukora Case Study: Rebuilt customer experience — case study

Manukora

Food and beverage · Redesign and migration

Manukora

Food and beverage · Redesign and migration

Manukora

Consumer Goods Food Retail

Stores we built

Rated 5.0 from 38 reviews on the Shopify Partner Directory

Verify on the directory
"We worked with SMG to rebuild our site from the ground up… The project involved migrating from Magento, cleaning up years of technical debt, and setting up a new Shopify experience that finally feels clean, fast, and modern."
Say It With A Condom, Shopify Partner Directory review
"Before working with them, we went through four or five different providers, and none came close to the level of service we’ve received from Johnathan, Michele, and their team."
ADEGEN, Shopify Partner Directory review
"They had a schedule and a budget, and they completed the project at the budget on time… made sure that we didn’t get any bad surprises."
Silver Knights Chess Academy, Shopify Partner Directory review

Who we’re not the right fit for

We would rather say this now than three weeks into a project.

  • Budgets under $20,000. Below that, a quality Plus build is not realistic. A strong Shopify theme and a good freelancer will serve you better, and we will say so on the call.
  • Brands shopping for the cheapest bid. We are built to be more reliable than a large agency and more capable than a freelancer, not the lowest number in your inbox.
  • One-off ticket work. Most of our clients stay for years. If you need a single bug fixed, a support retainer fits better than a project.
  • Teams that cannot consolidate feedback. Our timelines assume a decision-maker who can approve each round. Without one, the schedule slips and neither of us enjoys it.

Frequently asked questions

Is Solo Media Group a certified Shopify partner?

Yes. Solo Media Group is a Shopify Platinum Partner — the top tier of Shopify’s Service Track, held by roughly 86 agencies worldwide. We have been a Shopify partner since March 2018 and are rated 5.0 from 38 reviews on the Shopify Partner Directory. You can verify both on our directory profile.

What does a Shopify Plus development agency cost?

Full design-and-build projects with Solo Media Group start at around $20,000, with ongoing retainers from $3,000 per month or 20-hour engagements. Final cost depends on integrations, custom apps, catalog size, and whether it is a net-new build or a migration. Every quote is line-itemed.

How long does a Shopify Plus build take?

A typical new build runs 8–12 weeks from design kickoff to launch. Focused builds can launch in 4–6 weeks. Migrations vary with data volume and integration complexity. Feedback turnaround is the biggest factor in hitting the earlier end of the range.

What’s the difference between Shopify and Shopify Plus?

Standard Shopify fits most single-brand stores. Shopify Plus adds enterprise features and lets you run up to 10 expansion storefronts under one organization — useful for multiple brands, currencies, or regions. It also adds checkout extensibility, native B2B, and higher API limits. We recommend the right plan for your structure; you buy the license from Shopify directly.

Will I lose SEO traffic when I migrate to Shopify Plus?

Not if redirects are mapped before launch. We plan redirect mapping and preserve technical SEO as part of migration scope rather than as a post-launch fix. We have replatformed stores with no SEO dip after launch.

Can my team edit the site after launch?

Yes. We build on editable, well-structured themes so your team can update content and pages without a development ticket for every change. You get documentation and a walkthrough at handoff.

Do you build custom apps and integrations?

Yes. We build custom middleware and private apps connecting Shopify to ERPs, POS systems, Salesforce and other CRMs, subscription platforms, and custom business logic. Integrations are scoped up front so they stay reliable and maintainable.

Can you support B2B and wholesale on Shopify Plus?

Yes. We build gated portals, customer-specific pricing, tax-exempt handling, and automated renewals on native Shopify Plus B2B features, usually connected to your CRM. Elm Biosciences is one example — a separate portal where dermatologists apply, order, and access education.

What platforms do you migrate from?

Magento and Adobe Commerce, WooCommerce, BigCommerce, OpenCart, WordPress, and custom platforms. We migrate products, variants, customers, order history, collections, and metafields, and confirm exact data scope during discovery.

Do you offer design-only engagements?

Yes. If you have an in-house development team, we deliver production-ready Figma files for your engineers to build from.

What happens after launch?

Every build includes a 30-day post-launch support window for fixes on original scope. Ongoing work continues through a retainer — most of our clients stay on for years rather than treating launch as the finish line.

Do you build headless Shopify stores?

Yes, when it’s warranted. Headless commerce earns its cost when a theme genuinely can’t deliver a specific business requirement and you have engineers to maintain it. Plenty of brands ask for headless and are better served by a well-built Plus theme, and we’ll tell you which situation you’re in before you spend the budget.

Can you improve our existing store rather than rebuild it?

Often, yes. Performance optimization, checkout work, integration fixes and conversion improvements on an existing store frequently deliver more than a rebuild, at a fraction of the cost. If that’s the honest answer we’ll give it, even though it’s the smaller engagement.

How do you handle automation on Shopify Plus?

Shopify Flow covers order routing, customer tagging, fraud review, inventory alerts and approval workflows without custom code, and Shopify Functions handles discount and checkout logic. Between them, most operational requests brands assume need a custom app don’t.

What makes an agency a Shopify Plus partner agency?

Shopify tiers partners on delivered work and commercial performance, recalculated quarterly. Only agencies at the Plus tier or above can access Plus-only APIs. Beyond the tier, look for real case studies with named clients and outcomes rather than logo walls, and ask what they’ve shipped that wasn’t theme configuration.

Book a discovery call

Bring your current platform, your revenue range, and what is blocking you. We will tell you what the build looks like, roughly what it costs, and whether we are the right team for it — including when we are not.