Leading Shopify Plus Development FirmsDevelopment Firms
Build a high-revenue store with the top Shopify Plus developers. We deliver custom headless stores, B2B portals, and migration in 8-12 weeks.
IRPR ships high-performance Shopify Plus stores for brands that need more than a theme. We build custom frontends with Hydrogen and React, custom checkout flows, and B2B portals using Shopify Plus APIs. Our senior engineers handle every layer: design, backend, integrations with ERPs and CRMs.
Most projects ship in 8-12 weeks with a fixed price between $80K and $250K. All stores meet PCI-DSS Level 1 compliance out of the box. We manage deployment on Oxygen or your own cloud and include 30 days of post-launch support.
We work with three types of buyers: DTC brands growing from $1M to $50M who need headless to scale, established retailers migrating from Magento or WooCommerce, and B2B companies launching wholesale portals on Shopify Plus. Each gets a dedicated senior team and a single point of contact.
Types of software we ship.
Headless Shopify Plus Store
Build a custom frontend with Hydrogen and React for faster load times and unique brand experiences. Connects to Shopify via Storefront API.
Custom Shopify Plus App
Create private or public apps for custom checkout, inventory sync, or ERP integration. Uses Shopify CLI and Polaris design system.
Shopify Plus Migration
Migrate from Magento, WooCommerce, or BigCommerce to Shopify Plus. Includes data mapping, SEO preservation, and zero downtime cutover.
B2B Wholesale Portal
Build a custom B2B portal with tiered pricing, bulk ordering, and company accounts. Uses Shopify Plus Customer Accounts API.
Subscription Engine
Add recurring billing for subscriptions, memberships, or recurring shipments. Integrates with Recharge, Bold, or custom via Shopify Subscriptions API.
Multi-Store Management Tool
Central dashboard to manage multiple Shopify Plus stores across regions or brands. Syncs inventory, products, and customers via API.
Custom Checkout Experience
Redesign checkout with custom fields, upsells, and one-click payments using Shopify Plus Checkout Extensibility and JavaScript.
Shopify Plus Theme Development
Custom Liquid theme tailored for performance and conversion. Includes section blocks, custom meta fields, and A/B testing setup.
We build for every business type.
Retail and Fashion
Health and Beauty
Home and Living
Food and Beverage
Electronics and Tech
Why Leading Shopify Plus Development Firms Trust IRPR
We ship production-grade code on a fixed timeline with clear pricing.
IRPR has delivered over 200 Shopify Plus projects since 2018. Our senior engineers work on headless Hydrogen stores, B2B portals, and custom integrations with NetSuite, Salesforce, and SAP. Every project uses a four-phase process: Idea, Roadmap, Product, Release.
Our clients include brands processing $10M+ annually on Shopify Plus. We handle PCI-DSS compliance, 99.9% uptime SLAs, and custom checkout flows that convert 20% better than default themes.
The Difference Between Leading Shopify Plus Development Firms and Generic Agencies
Most agencies promise custom work but deliver templated builds on a theme.
We see it often: a brand hires a development firm expecting a headless store, but gets a modified theme with slow load times. The code is not reviewed, the checkout is not optimized, and there is no post-launch support.
IRPR writes every line of code from scratch. We use Hydrogen, React, and TypeScript. Your store is fully custom, with automated CI/CD, Sentry monitoring, and a performance budget that keeps Lighthouse scores above 90.
- Starts with a pre-built theme
- No senior engineers on the project
- Hourly billing with no cap
- Basic SEO with no data migration plan
- No performance guarantee
- Code ownership unclear
- Custom headless build with Hydrogen
- Senior engineers only, direct access
- Fixed price from day one
- SEO preservation with 301 redirects and metadata
- Lighthouse 90+ guarantee in contract
- Full code ownership after final payment
How We Build Your Shopify Plus Store – 4 Phases
From idea to release in 8-12 weeks with full transparency.
Every engagement follows the same structure. We start with a two-day discovery to define scope, then produce a fixed-price Roadmap document. You approve each phase before we move forward.
During the Product phase, we build in two-week sprints with a demo at the end of each. The Release phase includes load testing, payment gateway setup, and 30 days of hypercare.
Everything That Ships With Your Shopify Plus Store
You own the full codebase, not just a frontend.
Our deliverables go beyond a working store. We hand over every asset needed to run, scale, and maintain your Shopify Plus platform. No black boxes, no locked-in dependencies.
All code is stored in your private GitHub repository. Documentation includes runbooks for deployment, environment variables, and common troubleshooting steps.
- Source code in your GitHub repo (private, full history)
- CI/CD pipeline on GitHub Actions with automated tests
- Staging environment on Oxygen or your cloud
- Production deployment with zero-downtime strategy
- Sentry error tracking and DataDog monitoring configured
- Performance report with Lighthouse scores 90+
- PCI-DSS compliance checklist and audit readiness
- 30-day post-launch support (Slack + email)
What we ship in this practice.
Headless Store for DTC Beauty Brand
Built a Hydrogen storefront with custom product configurator and Klaviyo integration. Reduced page load time from 4.2s to 1.3s. Increased conversion rate by 18% in 3 months. Tech: Hydrogen, React, Shopify Storefront API, Klaviyo.
B2B Wholesale Portal for Furniture Retailer
Created a multi-company portal with tiered pricing, bulk order forms, and NetSuite sync. Cut order processing time from 30 minutes to 5 minutes. Tech: Shopify Plus Customer Accounts API, NetSuite SuiteTalk, Node.js.
Custom Checkout for Subscription Coffee Brand
Redesigned checkout to include one-click upsells, gift options, and recurring billing. Average order value increased by 25%. Tech: Shopify Checkout Extensibility, Liquid, Stripe.
Migration from Magento to Shopify Plus for Apparel Brand
Migrated 50,000 SKUs, 10 years of customer data, and 1,500 SEO URLs with zero traffic loss. New store loads in under 2 seconds. Tech: Hydrogen, Shopify Migration API, Google BigQuery.
Multi-Store Dashboard for Electronics Distributor
Built a central app to manage inventory across 6 stores in 3 countries. Reduced stockouts by 35% and cut manual syncing time by 10 hours/week. Tech: Shopify Admin API, React, PostgreSQL.
Subscription Engine for Pet Food Brand
Designed a custom subscription flow with flexible delivery dates and product swaps. Monthly recurring revenue grew by 40% in 6 months. Tech: Shopify Subscriptions API, Recharge, Node.js.
Why teams hire us.
Fixed price from the roadmap
Every Shopify Plus project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices. If the scope changes, we re-quote before starting the change.
Senior engineers only, no juniors
We do not staff beginners. Every developer has 8+ years of experience and has shipped at least 5 Shopify Plus stores. You communicate directly with the person writing the code.
Full code ownership
You own 100% of the source code, licenses, and credentials. We never use proprietary frameworks. When the project ends, you keep everything in your own GitHub repo.
Headless expertise with Hydrogen
IRPR has shipped over 30 headless Shopify Plus stores using Hydrogen and React. We know the Storefront API, caching strategies, and dynamic rendering for maximum speed.
Performance guarantee in the contract
We commit to a Lighthouse performance score of 90+ and a server response time under 200ms. If we miss the target, we fix it at no cost during the warranty period.
30-day hypercare included
After launch we stay on for 30 days. We monitor errors, optimize load times, and fix any integration issues. Most clients need less than 5 support tickets in that period.
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.