Custom E-Commerce Platform Development
You need a custom e-commerce platform because the off-the-shelf options stopped working. Maybe your product logic is too complex for Shopify. Maybe your B2B pricing rules break every plugin you try. Maybe you need a multi-vendor marketplace and no template can handle commission splits, vendor dashboards, and separate fulfilment workflows. Whatever the reason, you are looking for a custom e-commerce development company that can build what your business actually needs. We help businesses develop e-commerce platforms from scratch, covering everything from headless architecture and e-commerce platform development through to payment integration, inventory systems, and ongoing iteration. Our e-commerce developers build custom online stores, B2B portals, marketplaces, and subscription platforms, all designed around the way your business actually operates. That includes custom e-commerce platforms for B2B with customer-specific pricing, negotiated quotes, and approval workflows. Ready for a custom e-commerce quote? Tell us what you need to sell and how.
Custom e-commerce platform development typically costs between $30,000 and $250,000 depending on complexity, integrations, and business model. A focused B2C store with custom product logic starts around $30,000. Multi-vendor marketplaces and complex B2B platforms with ERP integration run $80,000 to $250,000.
Core Capabilities and Features
Headless Commerce: When and Why
Headless commerce separates the frontend from the backend, connected through APIs. Your store gets any frontend experience you want, on any device, without being constrained by a platform theme.
- A completely custom frontend experience that no theme can deliver product configurators, interactive sizing tools, 3D product viewers, or storytelling-driven shopping experiences
- Sell across multiple channels (web, mobile app, kiosks, IoT) from a single backend with inventory, pricing, and orders centralised
- Headless frontends built with Next.js regularly achieve Lighthouse scores above 90 and page load times under 1 second
B2B E-Commerce Platforms
Business-to-business platforms with customer-specific pricing, volume discounts, contract management, quote-to-order workflows, purchase order support, approval chains, trade credit, and account-level dashboards. B2B e-commerce is not consumer e-commerce with bigger order values. The buying process is fundamentally different, and the platform needs to reflect that.
- 75% of B2B buyers are willing to switch suppliers for a better online purchasing experience
- Customer-specific price lists, tiered volume discounts, negotiated contract pricing, and quote-to-order workflows built into the platform core
- Your sales team sees e-commerce orders alongside manually-entered deals through CRM integration
Payment, Shipping, and Integration
Every custom platform needs to connect to external systems. The quality of these integrations determines whether your store runs smoothly or creates daily operational headaches.
- Stripe, PayPal, Adyen, Braintree with 3D Secure, PCI-compliant tokenisation, multi-currency support, and BNPL providers
- Real-time rate calculation from carriers, warehouse management system integration, third-party logistics connections, and order tracking
- Bi-directional sync with NetSuite, SAP, Odoo, or custom ERPs inventory levels, pricing, product data, and order status flow in real time
Why It Matters
If you are selling online and your platform is fighting you every day, every workaround you add is technical debt that compounds. And every month you delay the fix, your competitors with better platforms are converting the customers you are losing. A custom e-commerce platform is not just a website. It is the operating system for your business. Your product catalogue, your pricing logic, your checkout flow, your customer data, your integrations with fulfilment and accounting all of it runs through this platform. When it works well, your team focuses on growing the business. When it does not, your team spends half their time working around platform limitations.
By the Numbers
$6.88T
Projected global e-commerce revenue in 2026, growing at 7.2% year-over-year. The market is massive and still expanding. Businesses with superior platforms capture disproportionate share.
Source: Shopify / Global E-commerce Sales Report, 2026
$13.9B
The e-commerce platform market is projected at $13.92 billion in 2026, growing at 20.5% CAGR. Businesses are investing more in platform infrastructure, not less.
Source: Fortune Business Insights, 2025
59%
Mobile devices account for 59% of global e-commerce sales. Custom platforms with mobile-first architecture convert at significantly higher rates than template-based stores.
Source: MobiLoud / E-commerce Market Report, 2025
75%
75% of B2B buyers are willing to change suppliers for a better online purchasing experience. If your B2B platform is clunky, your competitors are already winning your customers.
Source: Craftberry / Global E-Commerce Statistics, 2025
$1.74B
The headless commerce market reached $1.74 billion in 2025 and is growing at 22.4% CAGR. Headless architecture is moving from experimental to mainstream for businesses that need custom frontends.
Source: Swell / Headless Commerce Statistics, 2025
"The most expensive e-commerce platform is the one you outgrow in 18 months. Every workaround, every plugin that almost works, every manual process your team runs because the system cannot handle it all of that is cost. The right platform eliminates that cost from day one."
Technologies
Our Tech Stack
Our Process
How we turn ideas into reality.
Discovery & Requirements
Your product catalogue structure, pricing logic, user roles, checkout flow, integrations, and growth projections are mapped through working sessions that challenge assumptions and make sure the right thing gets built.
Architecture Design
Your tech stack, system architecture, API layer, and data model are defined. For most custom platforms, a headless approach is used: React or Next.js on the frontend, Node.js or Python on the backend, PostgreSQL for the database, and cloud infrastructure on AWS or Google Cloud.
Development & Integration
Your platform is built in sprints, shipping usable increments every two weeks. Payment gateways, shipping providers, inventory management systems, ERPs, CRMs, and analytics platforms are all integrated during development, not bolted on after launch.
Launch & Ongoing Iteration
Your platform is deployed with monitoring from the first transaction. Performance tracking, error alerting, and conversion analytics are live from day one. After launch, ongoing development retainers cover new features, performance optimisation, and platform evolution.
Pricing
Investment Overview
Complex Product Logic
Product configurators, made-to-order items, bundles with dynamic pricing, products with hundreds of variants that exceed platform limits. If your product catalogue needs rules that no plugin can handle, custom is the answer.
B2B Pricing and Ordering
Customer-specific price lists, tiered volume discounts, negotiated contract pricing, quote-to-order workflows, purchase order support, and approval chains. Most B2C platforms treat B2B as an afterthought. A custom platform builds these into the core.
Multi-Vendor Marketplace
Separate vendor dashboards, commission calculations, split payments, independent fulfilment, and vendor-specific shipping rules. Platform marketplace plugins work for simple setups but collapse under real operational complexity.
Everything we do at Techneth is built around making data move reliably between the systems that matter. If you want to understand our approach before committing, you can read more about our team and how we work. Or explore the full range of digital product and development services we offer, like custom e commerce platforms. And if you already know what you need, get in touch directly and we will find time to talk.
Frequently Asked Questions
Everything you need to know about this service.
- How long does it take to build a custom e-commerce platform?
- A focused B2C store with custom product logic and standard integrations typically takes 3 to 5 months. A multi-vendor marketplace with vendor dashboards, split payments, and complex fulfilment takes 6 to 9 months. A full B2B platform with ERP integration, customer-specific pricing, and approval workflows takes 5 to 8 months.
- Should I build custom or stay on Shopify?
- Stay on Shopify if your products have standard attributes, your pricing is the same for all customers, and Shopify apps cover your needs. Build custom if you have complex product configuration, B2B pricing logic, multi-vendor requirements, or performance needs that Shopify cannot meet.
- What is headless commerce and do I need it?
- Headless commerce separates the frontend from the backend, connected through APIs. You need it if you want a completely custom frontend, sell across multiple channels from one backend, or need performance that platform themes cannot deliver. If your store is standard B2C with a normal layout, headless adds complexity without clear benefit.
- Can you migrate my existing store to a custom platform?
- Yes. Migration from Shopify, WooCommerce, Magento, BigCommerce, and legacy custom platforms includes product data, customer accounts, order history, SEO redirects, and integration reconfiguration. Both platforms run in parallel during the transition to ensure zero downtime and no lost orders.
- How do you handle B2B pricing on a custom platform?
- Pricing engines are built to support customer-specific price lists, tiered volume discounts, contract-based pricing, quote-to-order workflows, and manual override capabilities. Prices can sync from your ERP in real time or be managed directly in the platform.
- What tech stack do you recommend for custom e-commerce?
- For most projects: Next.js on the frontend for performance and SEO, a commerce backend (Medusa.js, Saleor, or Shopify Hydrogen depending on requirements), PostgreSQL for the database, and AWS or Google Cloud for infrastructure. For fully bespoke platforms with unique business logic, Node.js or Python on the backend.
Ready to get a quote on your custom e commerce platforms?
Tell us what you are building and we will put together a scoped proposal within 3 business days. Here is what happens when you reach out:
- 1You fill in the short project brief form (takes 5 minutes).
- 2We review it and come back with initial thoughts within 24 hours.
- 3We schedule a 30 minute call to align on scope, timeline, and budget.
- 4You receive a written proposal with fixed price options.
No commitment required until you are ready. Request your free custom e commerce platforms quote now.
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