Shopify Plus buildsby senior engineers —not an account team.
B2B, multi-currency, checkout extensibility, Shopify Functions, headless — the Plus work standard Shopify can't do. From a senior team that's shipped 20+ Shopify Plus builds since 2020, with direct founder access — no layers between you and the people writing the code.
By Manpreet Singh, Founder · Proscube
When standard Shopify becomes the bottleneck
By the time a brand needs Shopify Plus, the problem usually isn't the storefront — it's everything the storefront has to do. You're running B2B alongside DTC on a platform that fights you on both. You're selling into three countries and reconciling currencies by hand. Your checkout can't do the one thing your biggest customers keep asking for. Or you've simply outgrown the plan: API limits, no checkout control, automation you can't build.
So you start looking at Shopify Plus — and at the agencies that build on it. That's usually where the second problem starts. The large enterprise partners staff your project with a sales lead who disappears after the pitch and a rotating cast of junior developers. Timelines stretch to two quarters. The invoice has line items you can't account for. And when something breaks at 11pm during a launch, the senior person who could fix it isn't on your account.
That's the gap we built for. We're a senior team doing Shopify Plus engineering — B2B, checkout extensibility, multi-currency, Functions, headless — with the founders in the room and the people writing the code on your calls. 20+ Plus builds, no layers. You get enterprise capability without the enterprise drag: the depth to handle a complex replatform, and the speed of a team that isn't routing every decision through three account managers.
What a Shopify Plus engagement includes
Scope varies by your commercial model, but a typical Plus engagement covers:
Plus architecture & scoping
We map your commercial model — DTC, B2B, wholesale, international — and architect the Plus org around it before design. You get a documented build plan and fixed scope.
B2B & wholesale
Company accounts, catalogs, price lists, net terms, and quote flows on Shopify B2B — so wholesale runs alongside DTC instead of in a separate system.
Checkout extensibility & Shopify Functions
Custom checkout — fields, validation, discounts, upsells, delivery logic — built on Checkout Extensibility and Functions, the upgrade-safe way. No deprecated checkout.liquid hacks.
Multi-currency & Shopify Markets
Local pricing, currencies, domains, and tax handling through Shopify Markets — set up to actually convert internationally, not just show a currency switcher.
Replatform & migration
Moving onto Plus from Magento, a custom stack, or standard Shopify — data, URL mapping, redirects, and a launch plan that protects your rankings and revenue.
Systems integration
ERP, OMS, 3PL, PIM, CRM, subscriptions — wired into Plus with the API headroom that standard Shopify doesn't give you.
Performance & headless option
Core Web Vitals tuning, and a Next.js or Hydrogen headless front end where catalog size or traffic justifies it.
Post-launch support
30 days of post-launch care, with retainer options for ongoing feature work and optimization.
The Plus-only capabilities we build on
Shopify Plus exists for these. If your current store or vendor can't do them well, that's the gap we close:
Shopify Functions
Server-side custom logic for discounts, shipping, payment customization, and validation — fast, upgrade-safe, and without app bloat.
Checkout Extensibility
A branded, customized checkout on Shopify's supported framework, replacing the old checkout.liquid model that's being deprecated.
Shopify B2B
Native wholesale — company accounts, price lists, and net terms — on the same store as your DTC business.
Shopify Markets
Cross-border selling with localized pricing, currencies, domains, and tax in one place.
Wholesale & custom channels
Dedicated buying experiences for wholesale and key accounts that need their own pricing and flow.
Shopify Flow
Low-code automation for the operational busywork — tagging, routing, risk, fulfilment — that grows with you.
How a Plus build runs
Audit & scope
We map your commercial model, systems, and current bottlenecks. You get a fixed-scope plan with the hard architecture decisions made up front.
Architecture & design
Data model, integration map, and design — reviewed with you before build. On a Plus org, getting the architecture right is most of the battle.
Build & integrate
Engineering in two-week sprints with working demos. B2B, checkout, integrations, and migrations built and tested against real edge cases.
Launch & scale
A rehearsed cutover, redirects, monitoring, and a launch runbook. Then optimization and feature work as you scale.
What a Shopify Plus build costs
Plus engineering is a bigger investment than a standard build, and the range is wider because the scope is. Most Shopify Plus engagements with us land between $20,000 and $80,000. Complex programs — multi-region rollouts, deep B2B, or a headless front end — run $100,000 and up. (Shopify's Plus platform fee, currently from roughly $2,300/month, is separate and paid to Shopify, not to us.)
What moves the number:
- B2B depth: a simple wholesale catalog is different from company-level pricing, approvals, and net terms.
- International scope: each market adds currency, tax, domain, and content work.
- Checkout & Functions: custom checkout logic and Shopify Functions are engineering, not configuration.
- Replatform complexity: migrating from Magento or a custom stack with years of data is more involved than a standard Shopify move.
- Headless: a Next.js front end is a separate, larger workstream.
What's not included: the Shopify Plus subscription, paid media, and content production.
We scope fixed after a discovery call, and for larger programs we phase the work — so you're approving and seeing value in stages, not signing a six-figure check on faith.
Ready to talk?
Tell us where standard Shopify is fighting you — B2B, checkout, currencies — and we'll map the Plus architecture for it. Senior engineers, founders in the room.
Reply within 1 business day. Real read, not a sales call.
Who this is for
Shopify Plus is for brands doing $1M+ a year, or about to scale through it — and this build is for the ones who need real engineering, not just a bigger theme. Brands adding B2B to a DTC business. Merchants going international. Teams replatforming off Magento or a custom stack they can no longer afford to maintain. Companies stuck with a Plus partner who's slow, expensive, or staffing them with juniors.
Who it's not for:
- Brands under ~$1M with no near-term scale plan. Standard Shopify will serve you better and cheaper — and we'll tell you so.
- Teams who just want the cheapest possible Plus build. We're senior; we're not the low bid, and we won't pretend to be.
- Programs that need a 30-person delivery org and a year of discovery before any code ships. That's a different kind of partner.
If Plus is overkill for where you are, we'll say it on the first call.
Proscube vs the other ways to build on Plus
| Proscube | Enterprise Plus partner | Offshore dev shop | In-house hire | |
|---|---|---|---|---|
| Who does the work | Senior engineers, hands-on | Senior on pitch, juniors on delivery | Variable, comms gaps | One or two people |
| Founder access | Direct, throughout | Account-managed | Rare | N/A |
| Typical timeline | 8–16 weeks | 4–8 months | Unpredictable | Months to hire + ramp |
| Typical cost | $20K–$80K | $80K–$250K+ | $15K–$50K | $120K+/yr loaded |
| Plus feature depth | B2B, Functions, Markets | Yes, but layered | Hit or miss | Depends on the hire |
| Engineering quality | Senior, peer-reviewed | Varies by pod | Varies widely | Single point of failure |
| Post-launch | 30 days + retainer option | Retainer required | Often disappears | Ongoing salary |
Relevant work
A few of the stores we’ve built. Browse the full portfolio for more.
Two ways to look at it — the fee, and the capability. On the fee: Plus starts around $2,300/month, versus roughly $400 for Advanced — about $1,900/month, or ~$23K a year, in extra platform cost. For most brands that math clears comfortably somewhere in the $1M–$3M revenue range. But the fee is rarely the real question; at that size the Plus features usually pay for themselves several times over before the subscription does. The capability is where Plus earns its keep: Checkout Extensibility and Shopify Functions let you customize checkout and pricing logic — the highest-impact part of the store — without fragile workarounds; Shopify B2B lets you run wholesale on the same platform instead of buying and maintaining a second system; Shopify Markets makes selling internationally a configuration, not a rebuild; and higher API limits plus Shopify Flow remove operational ceilings that cost you staff hours every week. What we tell brands sitting at the edge: if you can name one Plus capability that unlocks revenue you can't capture today — a B2B channel, a new market, a checkout change your data says will convert — Plus usually pays back fast. If you can't, stay on Advanced and revisit in two quarters. We'd rather you spend the $23K when it returns a multiple, not before.
Yes. We regularly take over or extend existing Plus stores — auditing what is there, untangling app sprawl and custom code, and building forward without a rip-and-replace you do not need.
Yes. We coordinate with your Shopify Plus Partner or Merchant Success Manager on launches, Plus features, and escalations — useful when you need Shopify moving in step with the build.
For a high-traffic replatform onto Plus, plan on roughly three to five months end to end, depending on data volume, integrations, and B2B scope. We phase the cutover and rehearse it — high-traffic stores don't get a launch-and-hope approach.
Yes — that's a core reason brands move to Plus. We set up Shopify B2B (company accounts, price lists, net terms) so wholesale runs alongside your DTC storefront instead of in a separate system.
Not if it is done properly. We map URLs, implement 301 redirects, preserve metadata and schema, and monitor rankings through and after cutover. Protecting organic traffic is part of the scope, not an afterthought.
Got a project?
Ready to scale on Shopify Plus?
Send us your store URL or your idea. You’ll hear back within one business day — an honest read on whether we’re the right fit. No sales call, no slide deck.