D2C brand stores
Direct to consumer stores with strong product storytelling, bundles, subscriptions and reviews. Shopify development is usually our first recommendation here because merchants can run it day to day without a developer.
Online stores that sell Austin, TX · since 2018
Ecommerce Website Development Company for Brands, Wholesalers and Manufacturers
We build online stores around your products, your margins and the way your customers actually buy, from a single D2C brand to a wholesale portal with account pricing.
678apps built
465+clients
Top 4%developer intake
10M+downloads by client users
From $4,500free scoping call
Overview
Choosing an Ecommerce Website Development Company
An online store is part shop window, part warehouse system and part payments desk. A capable ecommerce website development company has to understand all three. The product page can be beautiful, but if stock levels are wrong, shipping rates are off or the checkout asks for too much, the order never arrives.
SIZ Group has designed and developed 678 apps for more than 465 clients since 2018, and several of our portfolio designs are commerce products: a sports ecommerce store, a workspace furniture store, a gaming gear store and a grocery delivery app with live order tracking. That work taught us how buyers browse, compare and abandon carts on small screens, and we bring the same thinking to web stores.
We start every project by looking at your catalog and your operations rather than a theme gallery. How many products and variants do you sell? Do wholesale buyers see different prices? Who ships the orders, and from where? The answers decide the platform, the data model and the checkout, long before any design work.
If you sell a handful of products to consumers and want to launch quickly, a hosted platform with a well chosen theme may be all you need. We will say so. Custom work is for stores whose catalog, pricing or fulfillment does not fit the default path.
What we deliver
Ecommerce Development Services
Pick one service or combine them into a full store build.
B2B ecommerce and wholesale ordering
Customer specific price lists, minimum order quantities, quick order forms by SKU, net terms and approval flows for buyers who order on behalf of a company. Reorders from past invoices save your sales team hours.
Multi-brand catalogs
One back office running several storefronts, each with its own look, domain and product range. Shared inventory and customer data stay in one place while each brand keeps its identity.
Manufacturer direct stores
Stores for manufacturers selling to end customers for the first time, with care taken around distributor pricing, spare parts lookup and technical documentation on product pages.
Checkout and conversion work
Guest checkout, address lookup, wallet payments, clear shipping costs and fewer form fields. We review your funnel data and fix the steps where buyers drop out.
Store migrations
Moving products, customers, order history and URLs from an old platform to a new one. Redirects are mapped page by page so search rankings and bookmarks keep working.
Why SIZ Group
Why Merchants Work With Our Commerce Team
Most store problems are data problems. Duplicate SKUs, variants set up as separate products, missing weights that break shipping rates and images with no alt text all cost sales quietly. We clean and structure product data before launch, because a store is only as good as the catalog behind it.
We hire only the top 4% of developer applicants and the team brings more than 10 years of collective experience. You work with one team from kickoff through launch, and you own the store, the data and the accounts.
Talk to us- Platform advice without a biasWe build on Shopify, WooCommerce and headless setups, so the recommendation follows your catalog and team rather than our habits.
- Product data done properlyVariants, attributes, collections and structured product markup are planned so filters work and search engines read your listings correctly.
- Mobile checkout tested by handWe place real test orders on phones with every payment method you offer before the store goes live.
- Operations in mindOrder routing, tax settings, shipping zones and returns are configured with the people who will run them each day.
How we work
How We Build Your Store
One team from first call to launch, with demos at every milestone.
01
Kickoff and catalog review
We look at your products, variants, price rules and fulfillment setup, and agree who your buyers are. This review decides between Shopify, WooCommerce or a headless build.
02
Store architecture and data model
We plan collections, filters, product attributes and URL structure, and define how prices, stock and orders move between the store and your other systems. Migration mapping starts here if you are switching platforms.
03
Design and prototype
Home, collection, product, cart and checkout screens are designed mobile first and shared as a clickable prototype. We test the path from landing page to order confirmation before building it.
04
Development and data load
We build the theme or front end, configure payments, tax and shipping, and import cleaned product data. Apps and integrations are added only where they earn their place, since each one adds weight and cost.
05
Testing, launch and support
Test orders run through every payment method, discount type and shipping zone. After launch we watch orders, errors and page speed closely and ship fixes and improvements under a support plan.
Tech stack
Commerce Platforms and Tools
Hosted, open source or headless, chosen to fit your catalog and team.
ShopifyShopify PlusLiquidShopify HydrogenWooCommerceWordPressNext.jsReactStripePayPalApple Pay and Google PaySchema.org Product markupGoogle Merchant CenterGoogle Analytics 4
Who it's for
Stores We Are Built For
Apparel, sports and lifestyle
Size and color variants, fit guides and lookbooks. Our sports ecommerce store design shows how gear and content can share one experience.
Furniture and home
Large images, configurable options, freight shipping and delivery scheduling, as in our workspace furniture store concept.
Electronics and gaming gear
Spec comparison, compatibility filters and bundles, drawn from our gaming gear store design.
Grocery and fast moving goods
Substitutions, delivery windows and order tracking, the same problems our grocery delivery design with live tracking solves.
Pricing
How Ecommerce Projects Are Priced
Store cost depends mostly on catalog complexity and operations. A few dozen products with simple variants on a hosted platform is a modest build. Thousands of SKUs, customer specific pricing, several storefronts or a headless front end add design, data and testing work.
Migrations, custom checkout logic and connections to inventory, accounting or 3PL systems are the other big factors. Platform subscription fees, payment processing and paid apps are ongoing costs paid to those providers, and we list them in the proposal so there are no surprises.
We do not publish a fixed price for ecommerce work because no two catalogs are alike. Pricing is scoped and quoted in writing after a free call where we review your products, platform and goals.
Mobile apps start at
$4,500
Every project is scoped on a free call and confirmed in writing before work starts.
- Fixed scope and clear milestones
- Design, build, testing and launch
- Post-launch support available
Recent designs
All case studiesApps our team has designed
By industry
Find your industry Built around your trade
Detailed plans for 250 US industries, from HVAC contractors to specialty retailers.
What should I look for in an ecommerce website development company?+
Ask how they handle product data, payments, tax and shipping, not just design. A good partner reviews your catalog and operations first, explains platform trade-offs plainly and tests real orders before launch. They should also hand you full ownership of the store and its data.
Shopify or WooCommerce?+
Shopify is hosted, secure out of the box and easy for merchants to run, which suits most D2C brands. WooCommerce development makes sense when you already run WordPress, want full control over hosting and data, or need content and commerce tightly mixed. We recommend one after looking at your catalog and team.
What is headless commerce and do I need it?+
Headless commerce separates the storefront from the commerce engine, so the front end can be built with a framework like Next.js while Shopify or another platform handles products and checkout. It gives speed and design freedom but costs more to build and maintain. Most stores do not need it at launch.
Can you build a B2B portal alongside my retail store?+
Yes. Wholesale buyers can log in to see their own price lists, order minimums and payment terms while retail shoppers see the public store. Depending on the platform this is either one store with customer groups or a separate wholesale storefront sharing the same inventory.
Will I lose search rankings when I migrate platforms?+
Not if the migration is planned. We map every product, collection and page URL to its new address with permanent redirects, keep titles and descriptions, and check crawl errors in Search Console after launch.
Can you connect the store to our ERP or warehouse?+
Yes. Inventory, order and accounting connections are handled by our ecommerce integrations team. We scope them as part of the store build so the data model supports them from the start.
Related services
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Let's make it happen
Talk Through Your Store Plans
Book a free call to review your catalog and get a written quote for your ecommerce build.