We build eCommerce platforms for businesses that have outgrown Shopify.

We're a custom ecommerce website development company that builds for established retailers — B2B pricing engines, marketplace infrastructure, headless storefronts, and multi-channel commerce systems. If your platform is the reason you can't grow, it's time to build what actually fits. Our eCommerce case study shows what a platform rebuild delivered for a market-leading retailer.

Discuss your platform See eCommerce projects

40%+

Increase in sales after custom eCommerce platform rebuild for a market-leading retailer

$5M–$200M

Revenue range of the retailers we typically build for — established businesses, not startups

8+ years

Building custom eCommerce and marketplace platforms for US, UK, and European retailers

Trusted by

When does a custom eCommerce platform make more sense than Shopify Plus?

Most retailers don't outgrow Shopify Plus — the ones who do share recognisable patterns. If you're maintaining workarounds in multiple of these areas, the platform is the problem.

Stay on Shopify Plus when	Go custom when
Standard B2C checkout flow	Multi-step B2B checkout — PO number capture, approval workflows, credit terms
Simple product catalog (under 10K SKUs)	100K+ SKUs with complex attributes, variants, compatibility matrices, or dynamic bundles
Single storefront, single seller	Multi-vendor marketplace — seller onboarding, order routing, commission, payouts
Standard payment methods	Custom invoicing, purchase order workflows, credit accounts, NET 30/60 terms
No ERP integration needed	Deep ERP, WMS, or procurement system integration required
Account-agnostic pricing	Account-based pricing — different prices for different customers, volume tiers, contract pricing

Free tool

Not sure if you need a custom build?

Answer 7 questions — covering B2B pricing, catalog complexity, checkout logic, ERP integration, and revenue scale — and get a straight recommendation: custom build, Shopify Plus, WooCommerce, or an entry-level platform.

Take the Platform Picker

2 minutes. No email required.

Three platforms we build.

Custom eCommerce isn't one thing. B2B portals, headless D2C storefronts, and marketplace infrastructureare different problems with different architectures. We've built all three in production.

B2B Commerce Portal

Wholesale ordering, account-based pricing, and PO workflows — built for how B2B actually buys.

B2B buyers don't shop like consumers. They need account-specific pricing, minimum order quantities, purchase order workflows, credit terms, and approval chains before checkout. Shopify's price lists run out quickly. We build the pricing engine and checkout logic your B2B process actually requires.

See the B2B marketplace

B2B commerce portal with account-based pricing and wholesale ordering interface

Headless eCommerce

Full UX control with a performance-optimised custom frontend — no theme limitations.

A headless storefront separates the frontend from the commerce engine. You get complete control over what customers see and how they interact — sub-200ms page loads, personalised experiences, and native mobile apps all sharing the same backend. The right choice when your UX requirements exceed what any platform theme can deliver.

See the platform rebuild

Headless eCommerce storefront with custom frontend and decoupled commerce engine

Multi-Vendor Marketplace

Seller onboarding, order routing, commission management, and payout infrastructure — built from scratch.

Marketplace infrastructure is a different problem from a storefront build. You need seller onboarding workflows, product listing and approval systems, order routing across multiple fulfilment sources, commission calculation, and payout processing. Shopify doesn't do this. We've built it in production.

See the marketplace build

Multi-vendor marketplace platform with seller management and order routing system

What every custom eCommerce build includes.

Custom storefront

Headless Next.js or custom React frontend
Sub-200ms page loads, edge-rendered
Full UX control — no theme limitations

Commerce engine

Pricing engine (account-based, tiered, contract)
Catalog management (complex attributes, variants, bundles)
Checkout flow (custom steps, PO, approval workflows)

Marketplace infrastructure

Seller onboarding and product listing
Order routing and fulfilment splits
Commission calculation and payout

AI included

Dynamic pricing rules
Product recommendation engine
Customer segmentation and targeting

Integrations

ERP, WMS, and accounting systems
Payment processors (Stripe, Razorpay, custom)
Shipping carriers and 3PL platforms

Post-launch

Full source code and IP transfer
Documentation and team handoff
Support retainer available

Shopify Plus running out of road? We can scope a build in one call.

Talk to us

Two builds in production.

eCommerce platform rebuild for a market-leading retailer.

A market-leading electronics retailer's existing eCommerce platform was limiting growth — performance issues, checkout friction, and a product catalog their CMS couldn't manage at scale.

We rebuilt the platform from the ground up: custom headless storefront, rebuilt product management, new checkout flow, and full ERP integration. The result was a 40%+ increase in sales — not from traffic growth, but from conversion improvement on the traffic they already had.

Read the case study

Discovery & scoping

We map your catalog logic, pricing requirements, integration complexity, and migration scope.

Scoped proposal

Fixed-scope proposal with team composition, milestones, and delivery model.

Build — iterative sprints

Two-week sprints with working software at the end of each. No black-box development.

Parallel run & cutover

New platform runs alongside the existing one. We cut over when it's ready — no downtime.

Ongoing partnership

Most clients continue beyond the initial build — new features, scaling, and platform evolution.

Digital B2B steel trading platform with live price feeds and marketplace infrastructure

B2B steel marketplace — built from zero.

B2B steel trading in India was entirely offline — pricing was opaque, negotiations happened by phone, and no buyer had visibility into market rates across multiple manufacturers.

We built the entire trading infrastructure from zero: live price discovery, a landing cost calculator that handles freight and duty, a multi-tier marketplace network, native iOS and Android apps, and an AI model predicting steel price trends from commodity data. This isn't a storefront — it's a trading platform.

See the marketplace build

Common questions about custom eCommerce development.

A custom eCommerce platform makes more sense than Shopify Plus when a business needs account-based pricing for B2B wholesale, a multi-vendor marketplace infrastructure, deep ERP integration, or catalog logic that exceeds Shopify's data model capabilities. If you're maintaining multiple workarounds across pricing, checkout, and catalog — the platform is the constraint.

A B2B portal or D2C platform rebuild takes 16–24 weeks from signed spec to production. Marketplace infrastructure — multi-vendor with seller onboarding, order routing, and payout — takes 6–9 months depending on scope. We run the new platform in parallel with your existing one and cut over when it's ready. No downtime.

Yes. Data migration — products, variants, historical orders, customer records — is scoped and handled as part of the engagement. We've migrated from Shopify, Magento, WooCommerce, and custom legacy systems. Migration is the most common starting point.

Yes. Native iOS and Android or React Native depending on your requirements. Mobile apps share the same commerce backend — same inventory, pricing, checkout, and account logic. We scope mobile as a phase or build it in parallel with the main platform.

A headless storefront separates the front-end from the back-end commerce engine. This gives you complete control over UX, enables native mobile apps sharing the same back-end, and removes platform display constraints. Headless is right when the UX requirements exceed what any theme can deliver — typically on high-traffic D2C brands and B2B portals.

Yes. We've built B2B marketplace infrastructure including seller onboarding, product listing workflows, order routing, commission calculation, and seller payouts. Our B2B steel price tracker marketplace is a production example — built the entire price discovery and trading infrastructure from zero. Marketplace builds are scoped based on feature set.

Yes. Every Madgeek engagement includes AI where it makes sense. For eCommerce that typically means dynamic pricing, AI-powered product recommendations, customer segmentation, and search relevance tuning. These aren't add-ons — they're built into the platform.

Still have questions?

Talk to us directly — no forms, no waiting for a sales rep.

Start a conversation

Explore related solutions

eCommerce Development India

Full-stack eCommerce engineering from India — D2C, B2B, and hybrid platforms built by senior engineers.

Marketplace Development

Multi-vendor platforms with complex pricing, payment splits, and the catalog logic that makes marketplaces work.

B2B eCommerce

Tiered pricing, bulk ordering, and account-based access built for B2B wholesale and distribution.

D2C eCommerce

High-performance direct-to-consumer storefronts built for speed, conversion, and brand experience.

Hitting the ceiling on your current platform?

Tell us what your platform can't do. We'll tell you whether a custom build makes sense and what it would cost. No pitch. Just an honest assessment.

Describe your platform problem