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Shopify Plus Certified Partner since 2007Shopify Plus development agency, engineered to sell.
Optimum7 is a certified Shopify Plus Partner. We build the custom functionality, checkout, and integrations that off-the-shelf themes and apps cannot, with a senior U.S. team that has done one thing since 2007.
Custom Shopify Plus development, end to end
The work enterprise stores need that off-the-shelf themes and apps cannot cover, built and maintained by one senior team.
- Custom development
- Custom functionality built with the Admin API and Shopify Functions: dynamic pricing, product configurators, bundles through Cart Transform, and backend automation off-the-shelf apps cannot deliver.
- Checkout customization
- Checkout UI extensions, Shopify Functions for discounts and delivery, and Branding API work, built on Checkout Extensibility so your checkout stays current and fully branded.
- Migrations & replatforming
- Moves to Shopify Plus from Magento, BigCommerce, WooCommerce, and custom carts, with catalog, customers, orders, and SEO carried across through a one-to-one 301 map.
- B2B & wholesale
- Company accounts, customer-specific catalogs and price lists, net terms, quote and reorder flows, and tax-exempt purchasing, built on Shopify B2B and extended where the native tools stop.
- ERP, CRM & PIM integrations
- NetSuite, Salesforce, Brightpearl, 3PL and fulfillment, Avalara, ReCharge, and Klaviyo connected through tested, documented syncs that keep the back office in step with the store.
- Design, UX & CRO
- Mobile-first, ADA-minded theme development in Liquid, tuned for Core Web Vitals and shaped by conversion testing, so the storefront is built around how your customers browse and buy.
See how we build on Shopify Plus
Optimum7 builds every Shopify Plus store in four stages: a scoped discovery, a fixed price you approve before any code, the custom build in Liquid and Shopify Functions, then a tested launch with your data and SEO carried across one to one. One senior US team owns the project from the first call to go-live.
The walkthrough shows how we lock scope before writing a line of code, where custom functionality fits on Plus, and how a replatform keeps your rankings intact through launch.
Custom solutions we've built
When an off-the-shelf app cannot do the job, we build it into the store. Here is one of the 700+ custom functions Optimum7 has shipped on Shopify.
Tax-exempt checkout, built into the store
Specialist ID sells lanyards, badge holders, and reels at wholesale. Tax-exempt buyers had no way to submit a certificate for approval while they shopped.
Optimum7 built tax-exempt functionality directly on the storefront, so qualifying customers upload and clear their certificate without leaving the site.
Shopify work that moved the numbers
Named Shopify and Shopify Plus stores where custom development, design, and migration held the data and lifted the business.
Shopify Plus · Storefront rebuild
Vaio
The US computing brand's storefront rebuilt in Liquid and JavaScript around modern UX, product, and checkout paths, with no backend changes.
BigCommerce → Shopify Plus
Tees2UrDoor & SugarStitch
A dual-brand apparel retailer and wholesaler moved to two headless Shopify Plus storefronts, with the full order history migrated and zero data loss.
Volusion → Shopify
Alegria Shoe Shop
A footwear retailer moved off Volusion with field-by-field data mapping, duplicate-customer resolution, and full 301 redirect coverage for SEO.
How much does Shopify Plus development cost?
A custom Shopify Plus build typically runs $25,000 to $80,000, rising to $75,000 and up for enterprise, headless, or B2B work. Cost scales with catalog size, custom functionality, and integrations.
| Project type | What it covers | Typical cost | Timeline |
|---|---|---|---|
| Theme build & launch | Design, Liquid theme build, core apps, launch | $15k–$40k | 4–8 weeks |
| Custom Shopify Plus buildMost common | Custom checkout, Functions, app logic, integrations | $25k–$80k | 8–14 weeks |
| Replatform & migration | Data migration, 301 map, rebuilds, SEO carryover | $30k–$120k | 8–16 weeks |
| Headless / B2B replatform | Hydrogen build or B2B portal, plus ERP sync | $75k–$250k+ | 12–24 weeks |
Platform licensing is separate: Shopify Plus starts at roughly $2,300/month, paid to Shopify. The build figures above are one-time project costs.
Get a fixed price for your build
Send us your catalog, integrations, and the custom work you need. We scope it and return a fixed price and timeline, before any contract.
When should you upgrade to Shopify Plus?
Shopify Plus is worth it once the standard plan starts capping you: checkout you cannot change enough, API limits you keep hitting, staff-account ceilings, or a move into B2B and multiple regions. Most brands make the move between roughly $1M and $2M in annual revenue.
| Shopify Advanced$299 / month | RecommendedShopify Plusfrom ~$2,300 / month | |
|---|---|---|
| Staff accounts | 15 | Unlimited |
| API rate limits | Standard | 10× standard |
| Third-party gateway fee | 0.6% | 0.2% |
| Launchpad scheduling | Not included | Included |
| Expansion stores | 1 store | Up to 10 per contract |
| Support | Standard | Merchant Success manager |
Why Shopify Plus is the optimal choice for established brands
Once a store outgrows the standard plan, Plus removes the ceilings that slow scaling: checkout, API, support, and reach.
Customization and control
A fully editable checkout with Shopify Functions, Checkout UI extensions, and higher API access, so the store works the way your business does.
Advanced reporting
Deeper analytics and custom reports, with the 10× API headroom to pipe order and customer data into your BI and ERP stack.
Stronger cart recovery
Abandoned-checkout automation and Launchpad for scheduled drops and sales, tuned to recover revenue the standard plan leaves on the table.
Scale for traffic spikes
Enterprise infrastructure that holds through flash sales and launches, with roughly 10× the API rate limits of standard Shopify.
Dedicated support
A Merchant Success manager and priority support, plus unlimited staff accounts for a growing team.
Global and multilingual
Checkout in up to 20 languages versus 5 on the standard plan, plus up to 10 expansion stores for new regions and brands.
See the full breakdown in how much Shopify Plus costs and Shopify Plus vs BigCommerce.
What changed for Shopify checkout in 2026
Two deadlines have now passed: Shopify Scripts stopped running on June 30, 2026, and the legacy checkout.liquid was retired for non-Plus stores on August 26, 2026. Any store still on the old stack needs to move to Checkout Extensibility and Shopify Functions, which is the same work a move to Shopify Plus already includes.
Replatforming to Shopify Plus
A move off Magento, BigCommerce, or WooCommerce carries everything that makes the store work, tested against the original before cutover.
- Catalog and customers moved with variants, metafields, groups, and B2B price lists intact.
- Orders and history transferred with parity reports confirming counts match the source.
- SEO carried across: one-to-one 301 redirects, titles, metadata, canonicals, and structured data.
- Custom functionality rebuilt and verified against the original behavior.
Optimum7 has completed 1,000+ migrations and moved 3,000,000+ pages across every major platform. See the eCommerce migration services page for the full process.
Checkout, rebuilt on the current stack
We audit every legacy script on your store and map it to its replacement before the rebuild starts.
Shopify Plus, in plain terms
The definitions buyers look up while scoping an enterprise Shopify project.
What is Shopify Plus?
Shopify Plus is Shopify's enterprise plan, from around $2,300 per month. It runs on the same hosted platform as standard Shopify and adds a customizable checkout, roughly 10× the API rate limits, unlimited staff accounts, Launchpad for scheduled drops, up to 10 expansion stores, and dedicated support.
Shopify Plus vs Magento & BigCommerce?
Shopify Plus is fully hosted and fast to run, with the deepest app ecosystem. Magento (Adobe Commerce) is self-managed and the most customizable for very large, complex catalogs, at a higher running cost. BigCommerce sits between them, feature-rich with strong native B2B.
What is headless Shopify commerce?
Headless separates the storefront from Shopify's backend: a custom frontend such as Hydrogen or Next.js calls Shopify through the Storefront API. It buys performance and design control, in exchange for a larger build and more ongoing maintenance than a Liquid theme.
Is Shopify Plus worth it?
A straight answer, and the honest triggers that tell you when to make the move.
Worth it once you outgrow the standard plan, usually past $1M to $2M in revenue, or when checkout, API, or B2B limits start capping growth.
Read the full breakdown →- You need a checkout you can fully customize.
- You keep hitting API or staff-account limits.
- You are expanding into B2B, wholesale, or new regions.
- Flash sales and launches strain the platform.
- You are under ~$1M and the standard checkout is enough.
- A small catalog with no custom or B2B needs.
- You are early and still finding product-market fit.
Scope locked before any code
A written scope is the first deliverable on every project, so cost and timeline are fixed before development starts, and each stage clears a checkpoint before the next begins.
Discovery and requirements
We map your catalog, integrations, custom features, and traffic before anything is scoped.
Written scope and price
Every deliverable, milestone, and cost documented and approved, so there are no surprises.
Design and testable mockups
UX and theme design delivered as live, reviewable mockups before a line of code is written.
Development and integration
Theme, functionality, checkout, and integrations built to the approved spec and tested as they land.
QA, launch, and cutover
Functional, performance, and SEO testing on a staging clone, then a staged launch with redirects live.
Post-launch growth
Indexation, Core Web Vitals, new features, and CRO testing tracked after launch.
What you get that offshore shops cannot match
A senior, U.S.-based team that has only ever built online stores, accountable for the store long after launch.
Senior developers, no outsourcing
Your project is built in-house by a U.S.-based senior team. The people who scope the work are the people who build it.
Development, SEO, and CRO under one roof
One team owns the build, the rankings, and the conversion rate, so there are no gaps between a dev agency and a separate marketing agency and no one passing the blame.
The team stays after launch
Development does not stop on go-live day. Platform updates, new features, and CRO testing continue on a retainer or project basis, so the store keeps improving.
eCommerce only, since 2007
Every project has been an online store, across B2B, manufacturing, distribution, and DTC. The architecture and integration calls come from a team that only sells online.
Shopify Plus SEO that protects your rankings
Development and SEO live under one roof, so a rebuild or migration grows organic traffic with your rankings protected.
SEO carried across on migration
A one-to-one 301 redirect map, titles, metadata, canonicals, and structured data moved intact, with indexation watched at 7, 30, and 90 days. Shopify SEO services.
Faceted navigation, done right
Filters and collection pages that rank, without the index bloat and duplicate URLs that sink most Shopify Plus catalogs. How we handle facets.
Core Web Vitals and AI visibility
Speed, clean semantic markup, and answer-first content so pages win in search and get cited by AI engines. Answer-engine optimization.
They really took ownership of the entire process and exceeded my expectations. Having a partner like Optimum7 freed me to focus on other key areas of my business while they drove the technical and digital strategy for my store.
Beyond the build
A launched store is the starting point. These services turn it into more traffic and more revenue.
Shopify SEO
Technical and content SEO built for Shopify, to grow organic traffic and protect rankings through any replatform.
Conversion Rate Optimization
Turn store traffic into revenue with testing and CRO tuned to how your customers buy.
Custom eCommerce functionality
Custom features and integrations for any platform, built to solve the specific gaps your operation runs into.
Shopify Plus development questions
A custom Shopify Plus build from a specialist agency typically runs $25,000 to $80,000, with enterprise, headless, and B2B projects reaching $75,000 and up. A theme build and launch can start around $15,000. The main cost drivers are catalog size, custom functionality, and the number of integrated systems. Shopify Plus platform licensing, from around $2,300 per month, is paid to Shopify separately from build cost. Optimum7 gives you a fixed scope and price before the project starts.
A custom Shopify Plus build runs 8 to 14 weeks from discovery to launch. A replatform from Magento, BigCommerce, or WooCommerce runs 8 to 16 weeks, a Shopify-to-Plus upgrade is faster, and headless or large B2B projects run 12 to 24 weeks. Every project includes a fixed timeline set during scoping.
Shopify Plus is Shopify's enterprise plan. It adds a customizable checkout, roughly 10 times the API rate limits, unlimited staff accounts, a lower third-party transaction fee (0.2% versus 0.6% on Advanced), Launchpad for scheduled drops and sales, up to 10 expansion stores per contract, and dedicated Merchant Success support. Most brands move to Plus between roughly $1M and $2M in annual revenue, or sooner when they hit checkout, API, or B2B limits.
Yes. Checkout customization runs on Checkout Extensibility: Checkout UI extensions for custom fields and content, Shopify Functions for discounts, delivery, and payment rules, Cart Transform for bundles, and the Branding API for styling. These replace the retired checkout.liquid and Shopify Scripts, and they upgrade safely without rebuilding the store.
Yes. We build headless storefronts with Shopify's Hydrogen and Oxygen stack, and with third-party frontends such as Next.js, for brands that need control over performance and the storefront experience beyond what a Liquid theme allows. Headless is a fit when the payoff in speed or custom experience justifies the added build and maintenance.
Yes. Optimum7 has completed 1,000+ migrations. We migrate from Magento, BigCommerce, WooCommerce, Volusion, and custom carts, carrying catalog, customers, orders, and content across. SEO is preserved with a one-to-one 301 redirect map, titles, metadata, canonicals, and structured data, and we monitor indexation and rankings after launch. See the eCommerce migration services page for the full process.
Yes. We build on Shopify B2B with company accounts, customer-specific catalogs and price lists, net payment terms, quote and reorder flows, and tax-exempt purchasing, and we extend it with custom development where the native tools stop. B2B and DTC can run in one store or across separate storefronts, depending on your operation.
Yes. We connect Shopify to NetSuite, Salesforce, Brightpearl, and other ERP, CRM, and OMS systems, to 3PL and fulfillment platforms, and to tools like Avalara, ReCharge, and Klaviyo. Integrations are built and tested so inventory, orders, and customer data stay in sync between the store and the back office.
Shopify Scripts stopped running on June 30, 2026, and the legacy checkout.liquid was retired for non-Plus stores on August 26, 2026. Any discount, shipping, or payment logic that was built on Scripts now has to run on Shopify Functions, and checkout customizations on Checkout Extensibility. We audit your current checkout, map each piece to its replacement, and rebuild it so nothing is left broken.
Look for a certified Shopify Plus Partner that can name its live Plus-store count, shows case studies with real outcomes in your type of store, builds custom functionality in-house, and stays on after launch. Ask who writes the code, since a senior in-house team and an offshore subcontractor produce very different results.
Both. We build for growing brands on standard Shopify and for enterprise brands on Shopify Plus, with the same process and senior team. If Shopify Plus is not the right fit yet, we will say so and scope the build on the plan that fits your stage.
Yes. After launch you can retain the team for ongoing development, new features, platform updates, maintenance, and CRO testing, on a monthly retainer or project basis. The same people who built the store continue to support it.
Start your Shopify Plus project
Tell us what you are building or moving. We scope it, price it, and set the timeline in writing before any contract is signed.