Senior Shopify Plus developers
Your build is led by a senior Shopify Plus developer, never handed off to a junior.
200+ enterprise projects delivered
Enterprise Shopify Plus builds engineered to scale
A Shopify Plus agency obsessed with clean code, not cut corners. Checkout extensibility, B2B, internationalization and the ongoing support Plus demands.
No lock-in contracts · You own your ad accounts and data · Audit results in 48 hours
200+Enterprise projects
<1sTarget LCP on builds
99.9%Launch-week stability
0Surprise invoices
Trusted by 50+ D2C brand founders
91%Client retention — brands stay because the numbers work
4.9/5Average rating across 180+ verified reviews
Meta & GoogleCertified Meta Business & Google Partner
“Optimize Goal scaled our Meta and Google spend 3x while holding a 4.5x blended ROAS. The reporting finally ties ad spend to real revenue.”
A Shopify Plus agency obsessed with clean code, not cut corners
Optimize Goal is a certified Shopify Plus development agency for high-growth and enterprise brands across the US, UK, and beyond. We build checkout extensibility, Shopify Functions, B2B experiences, custom apps, and ERP/CRM integrations, and back every build with rigorous QA and conversion-focused engineering. Our Shopify Plus development agency services cover migrations, custom builds, headless storefronts, and enterprise integrations. Whether you need a Shopify Plus development company for a replatform, Shopify Plus development experts for ongoing work, or a partner for a headless Hydrogen build, our team has shipped it before. That includes work as a Shopify Plus web development company for storefront rebuilds and as a Shopify B2B development agency for wholesale channels on Plus.
Built for scale
We engineer for high traffic, flash sales, and complex catalogs, not just how it looks in a demo.
Clean, maintainable code
We write tidy, well-documented Liquid and apps your team can extend later.
Transparent process
Fixed scopes, clear milestones, and a staging store you can review anytime.
End-to-end Shopify Plus development, done right
One senior team handling every part of your Plus build, from checkout to ERP integration, against a single goal: a fast, reliable enterprise store that scales.
Checkout extensibility
Custom checkout UI extensions, branding, and one-page checkout on Shopify’s new framework, replacing deprecated checkout.liquid before the deadline.
Shopify Functions
Custom server-side logic with Shopify Functions, discounts, shipping, payment customization, and cart transforms that replace legacy Scripts.
Shopify development
Native B2B builds, company accounts, catalogs, price lists, payment terms, and custom wholesale ordering flows for complex sales models.
Custom app development
Custom public and private Shopify apps and integrations that add the exact functionality your enterprise store needs, on the latest APIs.
ERP, CRM & 3PL integrations
Clean integrations with NetSuite, Salesforce, HubSpot, ShipBob, and your wider stack, so Shopify Plus runs as the hub of your operation.
Migration & replatforming
Seamless replatforming to Shopify Plus from Magento, Salesforce Commerce, or custom platforms, with no lost data, SEO, or downtime.
Certified Plus expertise, integrated with your stack
Certified Shopify Plus Partner
Shopify Plus Partner, building to enterprise platform best practices.
Clean, modern code
Checkout extensibility, Functions, and modern JS, built for Plus and beyond.
Enterprise integrations
We integrate NetSuite, Salesforce, HubSpot, ShipBob, Klaviyo, and your stack.
Ongoing support that keeps Plus fast and stable
Launching is the start. Maintenance, new features, integrations, and performance work keep your Plus store fast and stable, the full lifecycle a modern Shopify Plus agency should own.
Maintenance & support
Retainer support, bug fixes, and platform updates so your Plus store never falls behind.
Enterprise integrations
ERPs, 3PLs, subscriptions, and APIs wired cleanly into your Shopify Plus store.
Conversion rate optimization
On-store A/B testing and UX fixes so more of your enterprise traffic converts.
Performance at scale
Core Web Vitals and load work tuned for flash sales and high-traffic peaks.
How it works
A clear path from brief to launch
Discovery & quote
We dig into your goals, systems, and current store, then send a fixed-scope quote and project plan, usually within 48 hours.
Design & architecture
You get wireframes, a technical architecture (checkout, Functions, integrations), and a build timeline before a single line of code is written.
Build & QA
We build on a staging store you can review, with structured QA across devices, browsers, and checkout flows before anything goes live.
Launch & support
We launch with a full pre-flight checklist, then stay on for support, fixes, and new features as you scale.
Builds that move the bottom line
Largest Contentful Paint
Apparel brand, full Shopify Plus rebuild
Conversion rate
Supplements brand, Magento → Plus migration
Migration to launch
Beauty brand, checkout extensibility rebuild
Mobile conversion rate
Home goods brand, B2B + wholesale build
PageSpeed score
Jewelry brand, Shopify Functions + speed
Faster checkout flow
Food & bev brand, custom checkout extensions
Enterprise power, without the enterprise headaches
We build the Shopify Plus capabilities that high-volume brands need, from checkout to B2B to integrations, all tied back to performance and revenue.
Checkout extensibility
Custom checkout UI, blocks, and branding on Shopify’s new framework, before checkout.liquid is deprecated.
Shopify Functions
Server-side discounts, shipping, and payment logic that replace legacy Scripts (retiring in 2026).
B2B & wholesale
Company accounts, price lists, payment terms, and custom wholesale ordering for complex B2B.
ERP & system integrations
NetSuite, Salesforce, HubSpot, and 3PL integrations so Plus is the hub of your operation.
Multi-store & expansion
Expansion stores, multiple markets, and international setups managed from one Plus org.
Replatform migrations
Seamless moves from Magento, Salesforce Commerce, or custom platforms, no lost data or SEO.
Builds our clients can rely on
“They rebuilt our Shopify Plus store and migrated us to checkout extensibility. The code is the cleanest we have ever worked with, and conversion jumped.”
Priya N. — VP Ecommerce, enterprise brand
“First dev team that understood enterprise Shopify Plus, B2B, Functions, integrations. Our mobile conversion is up 40%.”
“The replatform to Shopify Plus was flawless, zero downtime, no lost SEO. Their support after launch is what keeps us with them.”
The difference
Built differently from a typical dev shop
A senior Shopify Plus partner
- Senior Shopify Plus developer on every build
- Documented architecture & clean code
- B2B, ERP & integration experience
- QA across devices, browsers & checkout
- Fixed-scope quotes, post-launch support
One developer, stretched thin
- No enterprise or Plus experience
- Limited QA and testing capacity
- Messy code that is hard to extend
- Disappears when issues come up
- Hard to scale when you grow
Generalist devs, no Plus depth
- Build handed to a junior
- No checkout extensibility experience
- Cannot handle B2B or integrations
- Slow, unclear communication
- No support after launch
Specialists in building enterprise Shopify Plus stores
Deep experience across the high-volume categories that win on Shopify Plus, so your build starts with proven patterns.
Transparent, fixed-scope pricing
Most Shopify Plus builds run $20,000 to $150,000+ depending on checkout, B2B, and integration complexity. Note Shopify Plus itself starts at ~$2,500/mo platform fee. You always get a fixed quote before any work begins.
Checkout / Functions project
Checkout extensibility migration or custom Shopify Functions, scoped to your needs.
Full Plus build / migration
Full Shopify Plus build or replatform with B2B, integrations, and data preserved.
Ongoing Plus development
Retainer for features, integrations, Functions, and performance work as you scale.
Everything you need, one monthly retainer
One transparent monthly retainer for ongoing Shopify Plus development, with a senior team on call.
Related Shopify development services
From the development hub to app, theme, and B2B builds, explore the related service you need.
FAQ
Questions Shopify Plus founders ask us
Do you only build on Shopify Plus?
We specialize in Shopify Plus, but also build on standard Shopify. For enterprise needs, checkout extensibility, B2B, Functions, integrations, Plus is the right platform, and we build it to best practice.
How much does a Shopify Plus build cost?
Most Shopify Plus builds run $20,000 to $150,000+ depending on checkout, B2B, and integration complexity; smaller projects (a checkout migration or Functions work) start around $15,000. Shopify Plus itself is ~$2,500/mo. You get a fixed quote before any work begins.
How long does a Shopify Plus build take?
You’ll get a project plan in 48 hours. A checkout migration or Functions project can ship in a few weeks; a full Shopify Plus build or replatform typically takes 8 to 16 weeks depending on B2B and integration scope.
Will my Plus store be fast and SEO-friendly?
Yes. We build for Core Web Vitals and clean, semantic markup, and engineer for high-traffic peaks and flash sales, so your Plus store stays fast and search-friendly at scale.
Can you migrate us off checkout.liquid?
Yes, and you should act soon. Shopify is deprecating checkout.liquid and legacy Scripts (Scripts stop executing June 30, 2026), so customizations must move to checkout extensibility and Functions. We handle that migration end to end before the deadline.
Do you build B2B and wholesale on Plus?
Yes. We build native Shopify B2B, company accounts, catalogs, price lists, payment terms, and custom wholesale ordering, plus customer-specific pricing and quote flows for complex sales models.
Can you migrate us to Shopify Plus?
Yes. We replatform from Magento, Salesforce Commerce, BigCommerce, and custom platforms to Shopify Plus, with no lost data, products, or SEO, and minimal downtime.
Do you build custom apps and Functions?
Yes. We build custom public and private apps and Shopify Functions (server-side discounts, shipping, payment, and cart logic) when your store needs functionality off-the-shelf apps can’t cover.
Do you work with US and UK enterprise brands?
Yes. We build for high-growth and enterprise Shopify Plus brands across the US, UK, and other English-speaking markets.
What makes you different from other Shopify Plus agencies?
Senior Plus developers on every build, deep checkout extensibility, Functions, and B2B expertise, ERP/CRM integration experience, full QA, and post-launch support, with fixed-scope quotes.
How much does a Shopify Plus development agency cost?
It depends on scope. Checkout or Functions projects start around $15,000, full Shopify Plus builds and migrations run $35,000 to $150,000+, and ongoing development retainers start at $4,000/month. You get a fixed quote before any work begins.
Should I hire a Plus agency or a freelancer?
For enterprise Shopify Plus, an agency. Checkout extensibility, Functions, B2B, and ERP integrations are beyond most freelancers, and a failed enterprise build or migration costs real revenue. An agency gives you a senior Plus team, dedicated QA, and post-launch support.
Is my Plus store ADA and accessibility compliant?
We build to accessibility best practices (semantic markup, contrast, keyboard navigation) and can run an accessibility audit on your existing Plus store to identify and fix issues.
Who is my point of contact during the project?
You work with a dedicated project lead plus the senior Plus developer on your build, with a live staging store and clear milestones so you always know the status.
How much does Shopify Plus cost?
Shopify Plus pricing starts at $2,300/month on a 3-year term (or $2,500/month annually), plus variable platform fees at higher volumes. Development costs are separate — our fixed-scope quotes typically range from $15k for a migration to $100k+ for complex enterprise builds.
Do you build headless stores with Shopify Hydrogen?
Yes. Our Shopify Hydrogen developers build headless storefronts with Hydrogen and Oxygen when sub-second performance and fully custom front ends justify the added complexity. We'll tell you honestly if a standard Plus theme will get you there cheaper.
What is a Shopify Plus development agency?
A Shopify Plus development agency builds and scales stores on Shopify’s enterprise plan for high-growth and enterprise brands. Plus unlocks capabilities standard Shopify does not: checkout extensibility (custom checkout UI, blocks, and branding), Shopify Functions (server-side discount, shipping, and payment logic), native B2B (company accounts, catalogs, price lists, payment terms), higher API limits, and expansion stores. At Optimize Goal we build all of it, plus ERP, CRM, and 3PL integrations, custom apps, and replatform migrations, engineered for high volume, speed, and clean code.
Shopify is retiring the old checkout.liquid model and legacy Scripts in favor of checkout extensibility and Functions, Scripts stop executing on June 30, 2026. Any store still relying on checkout.liquid customizations, additional scripts, or Script Editor logic needs to migrate, or those customizations stop working. This is the single most important Shopify Plus project on most roadmaps right now, and we handle the migration end to end: rebuilding checkout UI as extensions, porting discount and shipping logic to Functions, and validating everything before the deadline.
Every build is led by a senior Shopify Plus developer with real checkout extensibility, Functions, and B2B experience, not a generalist learning on your project. We write clean, documented code, integrate cleanly with NetSuite, Salesforce, HubSpot, and your 3PL, and engineer for flash sales and high-traffic peaks. We work to fixed-scope quotes, build on a staging store you can review anytime, run full QA across devices and checkout flows, and stay on for support as you scale. Whether you need a checkout migration, a B2B build, custom Functions, or a full replatform to Plus, the goal is the same: an enterprise store that scales without breaking.
2–3 partners a month
Ready to see what your account can do?
Book a free, no-obligation audit call. We will show you exactly where the opportunity is — and you decide what happens next.