Bigcommerce Development
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You were looking for a BigCommerce development team that can build, fix, or migrate your store. Here is what that looks like with us.

Design, build, migrate and optimize BigCommerce stores.

We design, build, migrate, and optimize BigCommerce stores for brands and B2B sellers.

  • Custom BigCommerce stores, redesigns, and migrations
  • B2B, ERP, CRM, API, and marketplace integrations
  • AI search, personalization, SEO, and conversion optimization
4.9Rating on Clutch
1,000+Projects delivered
10+Years in business
200+Certified professionals

Need Developers?

Custom stores, integrations & migrations.

No obligation. We never sell or share your details.

Audit request received

Thanks. A BigCommerce specialist will email you to confirm the details of your store audit.

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Reviews

Trusted by Businesses That Need Reliable Ecommerce Development with a strong focus on timely execution and responsive support. Clients appreciate the consistent results and reliability, making them a trusted partner for successful project outcomes.

4.9

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5.0

"ATH Infosystems is noted for providing value for cost, with pricing that fits client budgets. They are responsive and deliver projects on time, with successful outcomes reported across projects, though some clients suggested improved resource allocation."

Chairman, Venue Marketplace

Ron Drori

Verified Review

5.0

"The team is highly responsive and consistently consistent, even when there are staffing changes. ATH Infosystems' project management is truly excellent. The client communicates with the team very easily via email and messaging apps efficiently"

CEO, THC Technologies Corporation

Frances M. Lynch

Verified Review

4.7

"The team has been responsive and paid close attention to timelines and deliverables. Moreover, the team has communicated well via virtual meetings, email, and messaging apps. The team's professionalism, consistency, and dedication have been impressive."

Managing Partner, Retail Co

Kent

Verified Review

BigCommerce Development Services

Most stores stall because design, integrations, and marketing are split across different vendors. We plan them together, so every change supports sales.

BigCommerce store development

Complete store builds planned around your catalog, checkout, shipping rules, and the systems you already run. You get a store that is ready to scale on day one, not one that needs rework after launch.

Migration to BigCommerce

Products, variants, customers, and order history moved from Magento, WooCommerce, Shopify, or a custom cart, with 301 redirects mapped so your search traffic follows you.

Theme customization

Custom menus, clearer product pages, quick add-to-cart, and mobile-first layouts built on Stencil and tested on staging before anything goes live.

B2B and wholesale

B2B Edition setup, log in for pricing, customer price lists, quick order, reorder, quotes, and purchase orders for distributors and manufacturers.

API integrations

ERP, CRM, Klaviyo, marketplaces, GA4, and Cloudflare connected through BigCommerce APIs and webhooks, so inventory, pricing, and orders stay in sync.

Headless storefronts

Fast Next.js storefronts built with BigCommerce Catalyst and the GraphQL Storefront API, for brands that need custom experiences or several storefronts.

AI search and personalization

Search that understands natural language and typos, better product discovery, and recommendations shaped by what each shopper actually does.

BigCommerce SEO

Technical SEO, clean URLs, structured data, and page speed work that helps your products rank on Google and show up in AI answers.

Conversion optimization

Checkout fixes, trust signals, upsells, and A/B tests that turn more of your current traffic into orders.

See How We Built a Custom BigCommerce Marketplace

Venue Marketplace needed a fast, scalable BigCommerce store with a large catalog, advanced search, custom pricing, and connected marketing tools. ATH handled the migration, custom theme, integrations, search, and ongoing optimization.

  • Migration to BigCommerce
  • Custom theme design and build
  • Slide-out menu for a large catalog
  • Log in for pricing
  • Frequently bought together
  • Add-to-cart upsell
  • Quick order and reorder
  • Speed and security work

Connected tools: Webkul, Klaviyo, ShareASale, Google Analytics 4, Cloudflare

How your project runs

A clear sequence keeps scope, budget, and launch dates under control. You always know what is being built and why.

  1. 1

    Free store audit

    We review your store or plans and send a prioritized list of fixes and opportunities.

  2. 2

    Discovery and scope

    We agree on goals, requirements, integrations, and a clear scope before any build starts.

  3. 3

    UX and design

    Layouts designed around how your customers shop, reviewed with you before development.

  4. 4

    Build and integrate

    Theme work, custom features, B2B logic, and API connections, developed on staging.

  5. 5

    Test and launch

    Speed, checkout, SEO, redirects, and integrations checked before go-live.

  6. 6

    Grow after launch

    Ongoing support, search and conversion improvements, and new features as you scale.

Is this the right fit?

We would rather be upfront so you do not waste a call.

We are a strong fit if you

  • Sell on BigCommerce and want more revenue from your current traffic
  • Plan to move to BigCommerce from Magento, WooCommerce, Shopify, or a custom cart
  • Sell B2B or wholesale and need pricing, quoting, or reorder features
  • Need your store connected to an ERP, CRM, or marketplaces
  • Are considering a headless storefront or AI-powered search

We are probably not the right fit if you

  • Only need a small one-off theme tweak
  • Have not chosen an ecommerce platform and do not want to consider BigCommerce
  • Want a template store launched without any planning
Trusted by 500+ Clients Globally

Clients We Have Worked With

Trusted by 500+ clients worldwide, from growing startups to established enterprises.

Case Studies

Discover our growing portfolio of digital products and technology solutions that accelerate business transformation for global enterprises and SMBs from different verticals.

E-commerce on BigCommerce Platform

E-Commerce Website Development on BigCommerce Platform

This project involved designing and developing an advanced e-commerce website on the BigCommerce platform.

View Case Study
Diamond Club Jewellery E-Commerce Portal

E-Commerce Portal on BigCommerce Platform

Diamond Club Jewellery sought to create a powerful, user-friendly e-commerce portal on BigCommerce tailored to the jewelry industry.

View Case Study
Insurance Website Development & Design

Remuny Insurance Website Development

Remuny Insurance is an innovative provider looking to enhance its online presence and provide a seamless user experience.

View Case Study

Questions before you reach out

Still deciding? These are the questions US store owners ask us most.

Book a call
How much does BigCommerce development cost?

It depends on scope. The main factors are a customized theme versus a headless build, catalog size, migration complexity, the number of integrations, and B2B requirements. Your free audit and discovery call give you a scoped estimate before you commit.

How long does a BigCommerce project take?

A store with a customized theme often takes several weeks. Migrations, B2B builds, and headless storefronts can take a few months. We share a timeline once scope is agreed.

Will moving to BigCommerce hurt my Google rankings?

Not when the migration is done carefully. We map 301 redirects for every URL that earns traffic, carry over titles, descriptions, and structured data, and monitor Google Search Console after launch.

Can you improve a store that is already live?

Yes. Many projects start with an existing store. We fix speed, search, product pages, and checkout, then keep improving conversions over time.

Do you build B2B and headless BigCommerce stores?

Yes. We set up B2B Edition features such as price lists, quotes, and purchase orders, and build headless storefronts with BigCommerce Catalyst and Next.js.

What happens after I submit the form?

A BigCommerce specialist reviews your request and emails you to confirm the details of your audit. You can also book a call straight away using our online calendar.

Find out what is holding your store back

Get a free BigCommerce store audit with a clear, prioritized list of fixes. No obligation, and no long sales pitch.

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