Best Shopify Plus Development AgenciesDevelopment Agencies
Find the agency that builds high-revenue Shopify Plus stores. IRPR delivers custom apps, migrations, and integrations in 8-12 weeks.
IRPR builds high-performance Shopify Plus stores using Hydrogen, Oxygen, React, and Node.js. We also develop custom Shopify Functions, checkout extensions, and headless storefronts that scale to millions of visitors.
Every project ships within 12-14 weeks with fixed pricing from $80K to $250K. We are PCI-DSS Level 1 compliant and hold SOC 2 Type II certification, so your store meets enterprise security standards out of the box.
We work with ecommerce directors scaling a DTC brand, CTOs migrating from Magento or BigCommerce, founders launching a new DTC line on Shopify Plus, and creative agencies needing white-label development for their clients.
Types of software we ship.
Custom Shopify Plus theme development
Liquid or Hydrogen themes tailored to your brand with full control over every template and asset.
Headless Shopify Plus storefront
Hydrogen + React frontend hosted on Oxygen for blazing fast load times and infinite customizability.
Custom checkout extensions
Shopify Functions to replace or extend the checkout flow with subscriptions, upsells, or custom fields.
B2B wholesale storefronts
Wholesale catalogs, tiered pricing, net terms, and buyer approval flows using Shopify Plus B2B features.
Multi-currency and multi-language stores
Localized pricing, taxes, and content across 100+ markets using Shopify Markets and custom integrations.
Custom Shopify apps for Plus
Private apps for inventory, order routing, fulfillment, or analytics that plug directly into the Admin API.
Migration to Shopify Plus
Zero-downtime migrations from Magento, BigCommerce, or custom platforms with all historical data preserved.
ERP and CRM integrations
Real-time sync with NetSuite, Salesforce, SAP, or HubSpot using middleware like Celigo or custom GraphQL services.
We build for every business type.
DTC brands
B2B brands
Enterprise retailers
Subscription brands
Global brands
Why choose IRPR for Shopify Plus development
We have shipped 200+ products across 50 countries, and every Shopify Plus store we build is designed for speed, security, and revenue growth.
Our team consists of senior engineers only. No juniors. Every project is led by a tech lead with 10+ years of ecommerce experience. We work async-first to keep costs low and quality high.
Because we build in 8-12 weeks, you get to market fast. Our fixed pricing means no surprises. And our PCI-DSS Level 1 compliance is baked into every architecture, so you never have to retrofit security.
IRPR vs generic Shopify agencies
Most agencies talk about speed and quality. We guarantee it with fixed pricing, senior engineers, and real compliance certifications.
Generic agencies often use junior developers, charge hourly, and skip performance optimization. Their stores fail on Core Web Vitals and security audits. You end up paying for fixes later.
IRPR builds every store with custom code, performance-first architecture, and enterprise compliance. Our fixed price covers everything from discovery to launch. No hourly billing, no scope creep.
- No fixed pricing, hourly only
- Junior developers on your project
- Reactive support after launch
- Uses third-party apps for everything
- No performance optimization
- No PCI compliance guarantees
- Fixed price from Roadmap phase
- Senior US-based engineers only
- 24/7 proactive monitoring and support
- Custom app development when needed
- Core Web Vitals optimization built-in
- PCI-DSS Level 1 compliant from day one
Our Shopify Plus development process
We use a four-phase process that turns your idea into a production-ready Shopify Plus store in 12-14 weeks.
Every project starts with a discovery phase where we audit your current tech stack, define requirements, and create a detailed roadmap. The roadmap includes a fixed price and a firm delivery date.
Once you approve the roadmap, we build in 2-week sprints with daily standups and weekly demos. You see working code every Friday. After launch we provide 3 months of post-launch support.
What you get with every Shopify Plus project
Everything we build is delivered with full source code, documentation, and a ready-to-deploy infrastructure.
You own everything. We never resell your code or lock you into a proprietary platform. Our deliverables include performance audits, monitoring dashboards, and a deployment runbook so your team can manage the store independently.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions
- Shopify Hydrogen storefront (or custom Liquid theme)
- Custom Shopify Functions for checkout
- Auto-scaling deployment on Oxygen
- Sentry error monitoring
- Google Analytics 4 with enhanced ecommerce
- Structured data for SEO (JSON-LD)
- Performance audit report (Lighthouse)
- Deployment runbook and credentials vault
What we ship in this practice.
High-volume DTC supplement store
Built a headless Shopify Plus store with Hydrogen, Contentful CMS, and a custom subscription engine. Achieved 40% faster load time and 25% higher conversion rate. Industry: ecommerce (supplements).
B2B wholesale furniture marketplace
Developed a B2B storefront with tiered pricing, company-specific catalogs, and NetSuite ERP sync. Reduced order processing time by 60% and increased repeat orders by 30%. Industry: manufacturing (furniture).
Global luxury fashion brand store
Created a multi-currency, multi-language store using Shopify Markets and custom localization. Shipped to 30 countries with real-time duty and tax calculation. Industry: fashion and luxury.
Subscription coffee roaster
Built a custom subscription engine with automated billing, order frequency management, and a customer portal. Reduced churn by 20% and manual support tickets by 80%. Industry: food and beverage.
Multi-brand electronics retailer
Integrated 12 separate catalogs into one Shopify Plus store with a unified checkout. Used custom GraphQL middleware for inventory sync. Grew revenue by 35% in the first quarter. Industry: electronics.
Luxury watch brand with custom configurations
Developed a product configurator for custom watch builds, integrated with 3D rendering and real-time pricing. Reduced returns by 40% and increased average order value by 50%. Industry: luxury goods.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the total cost before we write a single line of code.
Senior-only engineering team (no juniors)
Every engineer at IRPR has 10+ years of experience. We do not staff juniors. Your project is led by a tech lead who has shipped at least 20 ecommerce stores.
PCI-DSS Level 1 compliance built-in
Every Shopify Plus store we build meets PCI-DSS Level 1 requirements out of the box. We also maintain SOC 2 Type II certification. Your security audit will pass on day one.
8-12 week delivery guaranteed
We ship a fully functional Shopify Plus MVP in 8-12 weeks. 98% of our projects deliver on time. If we miss the deadline, we discount the next sprint.
Full ownership of all code and assets
You own the source code, designs, and infrastructure configuration. We never resell your work. You can take the entire project to another team whenever you want.
Post-launch support and monitoring included
Every project includes 3 months of post-launch support with 24/7 monitoring. After that, ongoing support is available at 15% of the project cost per year.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.