Error: orders are re-typed by hand
Orders, stock and customer records move between the store and your ERP by spreadsheet or copy-paste.
( build · ecommerce platforms
Ecommerce Website Development Services That Turn Traffic Into Orders
We design and build custom ecommerce stores for growing brands, manufacturers and distributors — fast storefronts, checkout that converts, and integrations with the ERP, inventory and payment systems your business runs on.
// overview
What is ecommerce website development?
Ecommerce website development is the design, build and integration of an online store — the storefront, product catalog, cart, checkout and payments, plus the connections to inventory, ERP, shipping and marketing systems behind it. Custom ecommerce development shapes all of this around how your customers actually buy, instead of forcing your business into a template.
For a growing company, the store is rarely the hard part. The hard part is everything around it: customer-specific pricing, stock that is accurate across channels, orders that reach the warehouse without re-typing, and a checkout that accepts the way your buyers want to pay. That is where most of our ecommerce work happens.
Selling to other businesses? See trade and wholesale ecommerce. Want AI assistants to find and buy your products? See agentic commerce. Moving from another platform? See website migration.
// sound familiar?
Signs your store has outgrown its platform
If three or more of these sound familiar, it is time to rebuild or replatform.
Warning: plugin sprawl
Dozens of apps and plugins slow the store down, conflict with each other and add monthly fees.
Error: checkout leaks revenue
Shoppers drop off at shipping, payment or account creation, and nobody knows exactly where.
Warning: one price for everyone
Trade customers, distributors and key accounts need their own pricing, but the platform cannot handle it.
Error: slow product pages
Heavy themes and images make product and category pages slow on mobile, where most shopping starts.
Warning: invisible to AI shoppers
AI assistants recommend competitors because your product data is incomplete or unstructured.
Already know you need to move platforms? Read about ecommerce replatforming in our guide below.
// what's included
Our ecommerce development services
From storefront to back office: everything needed to sell online properly.
Custom Ecommerce Store Development
Fast, conversion-focused stores built around your catalog, buyers and checkout, not a stock theme.
Headless & Composable Commerce
A separate front-end on top of your commerce engine for speed, flexibility and content-rich product pages.
Payment Gateway Integration
Cards, wallets, buy now pay later, multi-currency and fraud tools wired into a checkout that converts.
ERP, CRM & Inventory Integrations
Orders, stock, pricing and customers synced with the systems your operations already run on.
Wholesale & Trade Portals
Company accounts, customer pricing, quotes and fast reorder. See trade and wholesale ecommerce.
Ecommerce Replatforming
Move stores, products, customers and order history to a better platform without losing rankings.
Speed, Checkout & CRO
Core Web Vitals, product page UX and checkout friction fixed so more visits become orders.
AI-Agent-Ready Commerce
Structured product data and agent-facing checkout. See agentic commerce.
// free download
Get the Ecommerce Platform Scorecard
Score hosted, open-source, headless and custom options against your catalog, integrations, checkout and team — before you commit to a platform.
// process
How we build an ecommerce website
A build process designed around your catalog, your integrations and your buyers — not a theme.
Start Your Store →01Discovery & platform choice
Catalog, buyers, pricing rules, integrations and team reviewed, then the right platform type recommended.
→ requirements + platform recommendation
02Architecture & data
Product data model, integration map, payment flows and URL plan agreed before design starts.
→ integration map + data model
03UX & design
Category, product, cart and checkout flows designed and tested with your team.
→ approved prototype
04Build, integrate & migrate
Storefront, checkout, payments and ERP connections built; products, customers and orders migrated on staging.
→ launch-ready staging store
05Launch & optimise
Go-live, redirect and tracking checks, then conversion and speed improvements based on real orders.
→ launch report + CRO backlog
// how we measure
What we measure on ecommerce projects
We agree these measures with you at the start and report on them in plain language.
01
// conversion rate change
02
// hours of manual order entry removed
03
// mobile page speed change
// a typical challenge
Growing distributor taking orders by email and phone, with stock tracked in a separate ERP.
// how we approach it
Custom store with customer pricing, quick reorder and two-way ERP sync for orders and inventory.
// what we report
Progress against the measures above, every month, in plain language.
// who it's for
Ecommerce development for growing and enterprise companies
Stores for companies where online orders carry real revenue and real operational complexity.
Direct-to-Consumer Brands
Fast, story-led stores with product pages and checkout built to convert on mobile.
Manufacturers & Distributors
Trade portals with customer pricing, quotes and ERP sync. See trade and wholesale ecommerce.
Subscription & Replenishment
Recurring orders, flexible billing and easy account management that reduces churn.
Large & Complex Catalogs
Thousands of products, variants and attributes with fast search, filters and clean data.
// platforms
Choose the right type of ecommerce platform
We are platform-neutral. The right choice depends on your catalog, checkout, integrations and team.
01 / hosted
Hosted (SaaS) Platforms
Fastest route to a reliable store, with hosting, security and updates handled by the platform.
- Fast launch
- Low upkeep
- App ecosystem
02 / open-source
Open-Source Platforms
Full control of code, hosting and data for stores that need deep customisation.
- Full control
- Custom logic
- Self-hosted
03 / headless
Headless & Composable Commerce
A custom front-end on a commerce engine, connected by APIs for speed and flexibility.
- Fast storefront
- Content-rich
- API-first
04 / custom
Fully Custom Commerce
Purpose-built commerce for unusual pricing, configurators, marketplaces or trade workflows.
- Any workflow
- Configurators
- Marketplaces
Already on a platform and want to move? See website and ecommerce migration →
// payments & checkout
Payment gateway integration and checkout that converts
We connect the processors, wallets and payment methods your customers already trust — Stripe, PayPal, Moneris, Adyen, Square, Apple Pay and Google Pay — with buy now pay later, multi-currency, fraud screening and PCI-compliant checkout. Forward-looking stores can add stablecoin payments through regulated providers.
Selling on invoice or net terms? Trade payments are covered on our trade and wholesale ecommerce page.
- cardsstripe · adyen
- canadamoneris
- walletsapple · google pay
- paypalpaypal · venmo
- pay laterbnpl
- stablecoinusdc
// what's next
Is your store ready for AI shoppers?
AI assistants are starting to search, compare and buy products for shoppers. Stores with complete, structured product data and an agent-ready checkout are the ones these assistants can recommend and order from.
Every store we build ships with clean product data and structured markup. When you are ready to go further — agent-facing checkout, product feeds and commerce protocols — see agentic commerce development.
// compare
Why choose Tech Pumpkin as your ecommerce agency
How our ecommerce development compares with the usual alternatives.
| Feature | tech pumpkin | Typical ecommerce agency | DIY theme + apps |
|---|---|---|---|
| Platform advice | ✓ Platform-neutral | One preferred platform | Whatever was easiest |
| ERP & inventory integration | ✓ Built and tested in-house | Third-party connector | Manual |
| Wholesale & customer pricing | ✓ Native trade workflows | Add-on apps | ✕ |
| Checkout & payments | ✓ Cards, wallets, BNPL, stablecoin | Platform default | Platform default |
| SEO & AI-search ready | ✓ Schema + clean product data | Add-on | ✕ |
| Agent-ready commerce | ✓ Feeds + agent checkout | Rarely | ✕ |
// go deeper
Ecommerce development, explained
What buyers ask before choosing a platform and a partner.
Hosted vs open-source vs headless ecommerce
Hosted platforms trade control for speed, open-source trades upkeep for control, and headless trades simplicity for flexibility. The right choice depends on how custom your store needs to be.
| Factor | Hosted (SaaS) | Open-source | Headless / composable |
|---|---|---|---|
| Time to launch | Fastest | Medium | Longer |
| Customisation | Within platform limits | Full | Full front-end |
| Hosting & security | Handled | Your responsibility | Split |
| Best for | Standard catalogs | Complex rules | Content-rich, high-traffic brands |
How much does an ecommerce website cost?
Ecommerce website cost depends on scope, not on the number of products alone. The biggest cost drivers are:
- Platform type: hosted, open-source, headless or custom
- Custom features such as configurators, subscriptions or customer pricing
- Number and depth of integrations (ERP, CRM, inventory, shipping, PIM)
- Payment methods, currencies and tax rules
- Product, customer and order data migration
- Design depth and content creation
We do not sell fixed packages. After a scoping call you receive a written scope and estimate.
What is ecommerce ERP integration?
Ecommerce ERP integration connects your online store to your ERP so orders, inventory, pricing and customer data sync automatically. It removes manual order entry and stops the store from selling stock you do not have.
- Orders flow from the store into the ERP for fulfilment and invoicing
- Stock levels and prices flow back to the store
- Customer accounts and pricing tiers stay consistent
- Shipping and tracking updates reach the customer automatically
Selling to trade customers? See trade and wholesale ecommerce for quotes, purchase orders and net terms.
Ecommerce replatforming: when and how
Replatform when your current platform blocks growth — not because a newer one exists. A safe ecommerce replatforming plan covers:
- Audit of features, apps, integrations and SEO equity
- Product, customer and order history migration
- A 301 redirect for every product and category URL
- Payment, tax and shipping rules rebuilt and tested
- Rankings and conversion monitoring after launch
See every route on our website migration page.
// faq
Ecommerce website development FAQs
Straight answers to the questions we hear before every ecommerce build.
How much does an ecommerce website cost?
The cost of an ecommerce website depends on scope: catalog size and complexity, custom features, the number of integrations (ERP, CRM, inventory, shipping), payment setup, data migration and whether you choose a hosted, open-source or headless platform. We do not sell fixed packages; after a scoping call you receive a written scope and estimate.
How long does ecommerce website development take?
Timelines depend on catalog size, integrations, data migration and content readiness. Integration-heavy or headless projects take longer. We confirm the timeline in your project scope.
Which ecommerce platform is best for my business?
It depends on catalog size, how custom your checkout and pricing are, your integrations and your team. Hosted platforms suit fast launches, open-source platforms suit deep customisation, and headless or composable builds suit content-heavy brands that need speed and flexibility. We recommend a platform after a scoping session, not before.
What is headless commerce?
Headless commerce separates the storefront (what shoppers see) from the commerce engine (products, cart, checkout, orders). The two talk through APIs, so you can build a faster, fully custom front-end while keeping a proven commerce back-end.
Which payment gateways do you integrate?
We integrate major processors and wallets, including Stripe, PayPal, Moneris, Adyen, Square, Apple Pay and Google Pay, plus buy now pay later, multi-currency and fraud tools. For forward-looking stores we can also add stablecoin payments through regulated providers.
Can you integrate our store with our ERP?
Yes. We connect ecommerce stores to ERP, CRM, inventory, PIM and shipping systems so orders, stock, pricing and customer data stay in sync without manual re-entry.
Do you build B2B and wholesale ecommerce?
Yes. We build trade portals with company accounts, customer-specific pricing, quotes, purchase orders and net terms. See our trade ecommerce page.
Can you move our store to a new platform without losing SEO?
Yes. We migrate products, customers and orders, map every product and category URL to a 301 redirect, and monitor rankings after launch. See our website migration services.
What is agentic commerce and does my store need it?
Agentic commerce is when AI assistants search, compare and buy products for shoppers. Stores with clean product data and agent-ready checkout are easier for these assistants to recommend. See our agentic commerce page.
Who owns the store after launch?
You do. You own the code, design, content, data and accounts. We document everything and offer ongoing support, but you are never locked in.
// let’s build your store
Ready to start your ecommerce project?
Tell us about your catalog, customers and systems. You will get a clear plan and estimate — no obligation, and an NDA if you need one.
- 01Discovery call — catalog, integrations and platform
- 02Written scope and estimate
- 03Kickoff with your dedicated team