Shopify Plus Partner Agency

Shopify Plus Development for Premium & Enterprise Brands

From custom storefronts to headless Hydrogen builds and B2B commerce — we architect Shopify Plus experiences that convert at scale. Projects shipped in 8 weeks.

$378B+

Shopify GMV in 2025

8 weeks

Average delivery timeline

14 years

Enterprise commerce experience

$40K+

Project floor — we build to last

Decision Framework

Is Shopify Plus right for your brand?

Shopify Plus makes sense when scale demands it. Use this matrix to decide whether it's the right move — or whether standard Shopify or a headless WooCommerce build fits better.

Criteria

  • Annual GMV
  • Monthly orders
  • B2B / wholesale
  • Multi-storefront
  • Custom checkout logic
  • Dedicated account mgr
  • Platform fee

Standard Shopify

  • Under $1M / yr
  • Under 10K / mo
  • Limited
  • Single store
  • Basic
  • No
  • From $79 / mo

Shopify Plus ✓

  • $1M–$500M+ / yr
  • Unlimited
  • Native B2B portal
  • Up to 10 stores
  • Scripts + Functions
  • Yes
  • From $2,300 / mo

What we build

Eight ways we build on Shopify Plus

We're not generalists. Every engagement is led by a senior Shopify architect with 5+ years of enterprise platform experience.

New Store Builds

Full custom theme development. Pixel-perfect UX, blazing Core Web Vitals, and conversion-first architecture from day one.

Platform Migrations

Zero-downtime migrations from Magento, BigCommerce, WooCommerce, or custom platforms. Full data integrity, no SEO equity lost.

Headless / Hydrogen

Shopify Hydrogen + Remix storefronts for brands that need sub-second load times, full design freedom, and omnichannel content.

B2B Commerce

Shopify Plus B2B portals — net terms, tiered pricing, company accounts, purchase orders, and wholesale catalogs running alongside D2C.

App Development

Custom Shopify apps and Functions that extend platform capabilities beyond what any off-the-shelf app can offer.

Theme Customisation

Deep Liquid + Storefront API customisations to premium themes — Dawn, Prestige, Impulse — without the technical debt of full rebuilds.

Integrations

ERP (NetSuite, SAP), PIM (Akeneo), CRM (Salesforce, HubSpot), 3PL, and loyalty platforms — built to sync reliably at volume.

Managed Support

Ongoing retainer support — performance monitoring, platform updates, A/B testing, and feature development. From £8,000/mo.

Proof of work

Shopify Plus wins that move the needle

Luxury Fashion · Shopify Plus

0.8%2.3%

Conversion rate after replatform & UX rebuild

Migrated from Magento 2 to Shopify Plus Hydrogen. Custom PDP with editorial look-builder, sub-second LCP, integrated Klaviyo post-purchase flows.

D2C Supplements · Shopify Plus

+340%

Revenue uplift in 6 months post-launch

New Shopify Plus store with subscription-first checkout, multi-step quiz funnel, and Recharge + Gorgias integration. Launched in 9 weeks.

Premium Homeware · B2B + D2C

£2.4M

B2B wholesale orders in first 90 days

Built native Shopify B2B portal alongside D2C. Net-30 terms, tiered pricing, company accounts, purchase order workflow — all under one Shopify Plus instance.

Technology partners

Shopify Plus Klaviyo Gorgias Yotpo Recharge Stripe NetSuite Akeneo

How we work

Six steps from scoping call to go-live

Our delivery process is fixed enough to be predictable, flexible enough to handle complexity. Most projects land in 8–12 weeks.

01

Discovery & Scoping

Tech audit, integration map, conversion baseline, and project brief. Deliverable: a fixed-scope SoW before a single line of code.

02

UX & Design

Figma wireframes → high-fidelity comps → clickable prototype. Senior UX review and stakeholder sign-off before dev starts.

03

Build & Integrate

Theme dev, Shopify Functions, app integrations, data migration, and staging QA. Daily standups and Loom updates throughout.

04

Performance QA

Core Web Vitals testing, cross-device QA, load testing, and SEO redirect audit. We don't ship with a sub-90 Lighthouse score.

05

Launch

Planned, zero-downtime cutover. War-room monitoring for 48 hours post-go-live. Hotfix bandwidth reserved for launch week.

06

Compound & Optimise

Monthly retainer: A/B tests, feature releases, performance monitoring, platform upgrades, and growth analytics reviews.

Transparent pricing

We publish our numbers. Filters tire-kickers.

We don't compete on price. We compete on quality, speed, and accountability. If the numbers don't fit, we'll tell you on the first call.

Project

From $40K

Fixed-scope, fixed-price delivery

  • Discovery & UX design included
  • Custom Shopify Plus theme build
  • Core integrations (3 platforms)
  • Launch + 30-day hotfix cover
Popular

Retainer

From $8K/mo

Ongoing partnership, monthly billing

  • Dedicated Shopify architect
  • Sprint-based feature delivery
  • CRO testing + analytics
  • Priority SLA support

Embedded Squad

From $35K/mo

Full team embedded in your org

  • Architect + 2 devs + designer
  • Unlimited scope, your roadmap
  • Weekly leadership reviews
  • Growth strategy co-ownership

Common questions

Shopify Plus development FAQ

The best Shopify Plus agency for premium brands combines deep platform expertise with genuine luxury UX sensibility. Look for: certified Shopify Plus Partner status, a portfolio of $1M+ GMV stores, experience with headless / Hydrogen, and transparent pricing. SynaptiQ specialises in premium and enterprise Shopify Plus — from migrations to custom B2B portals — with a 14-year commerce track record.

A full Shopify Plus implementation typically costs $40,000–$150,000+ depending on scope, integrations, and complexity. Theme customisation projects start lower ($15,000–$25,000). Headless Hydrogen builds run $80,000–$200,000+. Ongoing retainer support starts at $8,000/month. SynaptiQ publishes a $40,000 project floor — we don't take on work we can't deliver to enterprise standard.

Most Shopify Plus migrations (from Magento, WooCommerce, or BigCommerce) take 8–16 weeks depending on catalogue size, integration complexity, and custom functionality to be rebuilt. We use a zero-downtime cutover strategy: the new store runs in parallel until final DNS switch. We also run a full SEO redirect audit to preserve organic equity.

Shopify Hydrogen is Shopify's React-based headless framework. Use it when you need: sub-100ms LCP, full design system freedom not constrained by Liquid, omnichannel content across web/mobile/kiosk, or complex frontend logic that Liquid can't handle. It adds ~30–40% to build cost vs. a standard Liquid theme but delivers meaningfully better Core Web Vitals and long-term frontend scalability.

Yes. Shopify Plus's native B2B functionality allows you to run a buyer portal alongside your D2C storefront from a single Shopify Plus instance. Buyers get dedicated logins, tiered pricing, net payment terms, draft order workflows, and company account management — all synced with your main inventory and fulfilment. We've built multiple dual B2B/D2C stores on Shopify Plus.

We build integrations using Shopify's Admin API and Webhooks, paired with iPaaS middleware (Celigo, Boomi) or custom Node.js connectors. For NetSuite, we map Shopify orders → NS Sales Orders, inventory → NS Item records, and customer data bidirectionally. For SAP, we typically use a certified SAP Commerce Cloud connector or a custom middleware layer. All integrations include error handling, retry logic, and alerting.

Shopify Plus wins on: TCO (no server costs), speed-to-market, ecosystem (8,000+ apps), and ongoing SaaS innovation. Adobe Commerce wins on: unlimited customisation, complex B2B workflows without vendor lock-in, and highly specific ERP integrations. Choose Shopify Plus unless you have a clear technical requirement that the platform genuinely cannot meet. Most "Magento requirements" we audit turn out to be solvable with Shopify Functions + custom apps.

Yes. All project clients get 30 days of complimentary hotfix coverage post-launch. After that, we offer monthly retainers from $8,000/month covering: feature development, platform updates, A/B testing, performance monitoring, and growth analytics reviews. Most clients move to a retainer within 60 days of launch.

Ready to build?

Get your Shopify Plus scoping call

30 minutes. We'll assess your current platform, define the scope, and tell you exactly what a project with us looks like.