Ecommerce development services built around checkout conversion
Our ecommerce development services build Shopify, WooCommerce, BigCommerce and Magento stores that load fast, survive a traffic spike, and don't lose the sale on the last step.
Every third-party app you install to patch a generic theme is a performance tax. We build the parts that matter into the theme itself.
Ecommerce development services for US brands
API Pilot is an ecommerce development company working with US retailers, B2B wholesalers and direct-to-consumer brands. We build new stores, migrate existing ones, and fix the speed and conversion problems that generic themes and app stacks create.
Most stores lose revenue in the same places: slow product pages, search that can't handle a large catalogue, stock that drifts out of sync, and a checkout with one step too many. We measure where your store leaks before proposing anything, then build the fixes into the theme itself rather than adding another app.
Every build includes payment, tax and shipping configuration, integrations with your ERP, CRM, 3PL or accounting system, redirect mapping that protects your rankings, and a Core Web Vitals report before and after launch.
Where online stores actually lose revenue
Speed is revenue
We budget page weight like money. Fewer apps, less JavaScript, measurably faster product and checkout pages.
Filtering that works
Large catalogues need real faceted search, built properly — not a plugin bolted on per attribute.
Inventory that tells the truth
Stock, pricing and fulfilment synced with your ERP or supplier feed, so you stop selling what you don't have.
What our ecommerce development services include
Store audit
Core Web Vitals, app bloat, checkout drop-off and search behaviour, with a prioritised fix list.
Custom theme development
Built from scratch or a hardened base — no page builder, no ten-app dependency chain.
Catalogue & search
Faceted filtering, variant logic and search that handles a five-figure SKU count.
Payments & checkout
Multiple gateways, tax and shipping rules, and a checkout tested on real devices.
Integrations
ERP, CRM, 3PL, accounting and marketplace feeds, synced both ways.
Custom plugins
When nothing on the marketplace fits, we write the extension and you own it.
Our ecommerce development process
Four stages, weekly demos, no black box.
Audit & opportunity sizing
We measure where the current store leaks revenue before proposing anything.
Design & catalogue architecture
Templates, variant logic and navigation designed around how people actually search.
Build, integrate, load-test
Theme, integrations and checkout built and tested at peak-season traffic levels.
Launch & conversion iteration
Redirects verified, vitals measured, then a prioritised list of post-launch improvements.
Ecommerce platforms and technologies we use
Chosen per project, not per habit. Pick a category to see what we reach for.
Industries we build ecommerce stores for
Auto & Parts
Fitment data, large catalogues and cross-reference search.
Fashion & Apparel
Variant-heavy catalogues, returns flows and lookbooks.
B2B Wholesale
Customer price lists, quote requests and net terms.
Home & Garden
Bulky-item shipping rules and configurable products.
Health & Beauty
Subscriptions, bundles and compliance-sensitive claims.
Why choose API Pilot as your ecommerce development company
Platform-neutral advice
Shopify, WooCommerce, BigCommerce or Magento — we recommend the platform that fits your catalogue and team, not a partner commission.
Performance budgets
Page weight and Core Web Vitals targets are agreed up front and measured on every release.
SEO-safe migrations
URL mapping, metadata and structured data are carried over, and rankings are monitored for 60 days after launch.
B2B ready
Customer price lists, quote requests, net terms and approval flows are features we have shipped before.
Ecommerce development case studies
Custom E-commerce Development for Smyrna Truck
An online store for a truck parts supplier, with advanced filtering and live inventory management.
View case study →
B2B E-Commerce Website Revamp for DexLoop
A WooCommerce B2B store revamp with wholesale features and a QuickBooks integration.
View case study →
A Personalized Shopping Experience with Zoho CRM Integration
Store and CRM wired together so every shopper sees pricing matched to their account.
View case study →Shopify if you want managed infrastructure and predictable costs. WooCommerce if you need unusual logic or full data control. We recommend based on your catalogue and team, not a partner commission.
Yes. Redirect mapping, metadata and structured data are part of the migration plan, and we monitor rankings for 60 days after launch.
Where we can replace an app with theme code, we will — it usually pays for itself in subscription savings and page speed.
Customer-specific price lists, quote requests, net terms and approval flows are all things we've built before.
A custom theme on Shopify or WooCommerce typically takes 8–12 weeks. Migrations, B2B features or complex integrations extend that to 3–5 months.
Yes. Our care plans cover platform and plugin updates, security monitoring, speed checks and ongoing conversion improvements.
Let's audit your store.
A 30-minute call, a written scope, and a fixed quote within 48 hours. No obligation, no sales deck.