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Madgeek

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.

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

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 whenGo custom when
Standard B2C checkout flowMulti-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 sellerMulti-vendor marketplace — seller onboarding, order routing, commission, payouts
Standard payment methodsCustom invoicing, purchase order workflows, credit accounts, NET 30/60 terms
No ERP integration neededDeep ERP, WMS, or procurement system integration required
Account-agnostic pricingAccount-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.

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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
  • Account-based and contract pricing engines
  • Volume tiers, MOQ enforcement, and quote workflows
  • PO capture, NET terms, and credit account management
  • Bulk ordering UX and order pad interfaces
  • ERP and procurement system integration
  • Distributor and dealer network management

B2B Steel Price Tracker — first digital price discovery and trading platform for B2B steel in India. Live commodity feeds, landing cost calculator, manufacturer-dealer-buyer network.

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
  • Next.js custom storefront with edge rendering
  • Sub-200ms page loads, core web vitals optimised
  • Personalised product discovery and recommendations
  • Native iOS and Android sharing the same commerce API
  • Headless Shopify or fully custom commerce backend
  • Conversion-focused checkout UX — no platform constraints

Market-leading electronics retailer. Full platform rebuild with custom storefront and checkout. 40%+ increase in sales — not from traffic growth but from conversion improvement on existing traffic.

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
  • Seller onboarding, verification, and product listing workflows
  • Multi-seller order routing and fulfilment splits
  • Commission calculation and automated payout processing
  • Seller dashboard with inventory, orders, and analytics
  • Buyer-seller dispute and return management
  • AI price trend intelligence and demand forecasting

B2B Steel Price Tracker — complete marketplace trading infrastructure for B2B steel. Live price feeds, manufacturer-dealer-buyer network, iOS and Android apps, AI price prediction.

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.

40%+ sales increase. One platform rebuild.

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
01
Discovery & scoping
We map your catalog logic, pricing requirements, integration complexity, and migration scope.
02
Scoped proposal
Fixed-scope proposal with team composition, milestones, and delivery model.
03
Build — iterative sprints
Two-week sprints with working software at the end of each. No black-box development.
04
Parallel run & cutover
New platform runs alongside the existing one. We cut over when it's ready — no downtime.
05
Ongoing partnership
Most clients continue beyond the initial build — new features, scaling, and platform evolution.

What was built

Live commodity price feedsReal-time B2B steel prices from manufacturers and distributors across India.
Landing cost calculatorAutomated freight, duty, and tax calculation for any steel grade, quantity, and destination.
Manufacturer-dealer-buyer networkMulti-tier marketplace connecting steel producers, distributors, and industrial buyers.
iOS and Android appsNative mobile apps for buyers and dealers with push price alerts and order management.
AI price trend predictionMachine learning model forecasting steel price movements — built from historical commodity data.

The first digital B2B steel trading platform.

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.

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