BigCommerce development services, engineered with AI.

End-to-end BigCommerce development services: new store builds, custom Stencil themes, integrations, BigCommerce migration, multi-channel and Multi-Storefront setups, B2B builds, custom apps and managed support, with AI merchandising wired in. Each can run as a standalone BigCommerce project or as part of one engagement.

A BigCommerce development company helps eCommerce businesses plan, design, build and support stores on the BigCommerce platform. The work usually spans storefront architecture, theme development, integrations with existing systems, data migration, testing and launch, then ongoing support after go-live.

A freelancer can suit a single theme fix. A BigCommerce development agency makes more sense when a project spans design, custom development, integrations and QA at once, or needs cover after launch. If you already have an in-house team, you can also hire BigCommerce developers from us to work inside it.

Yes. We develop custom themes on Stencil, BigCommerce's theme engine, around your brand identity. Stencil templates use Handlebars, styles support Sass and SCSS, and the Stencil CLI lets developers work on a theme locally with no impact on the live storefront. BigCommerce says Stencil incorporates best practices in technology, design standards and SEO. Many projects start from Cornerstone, the open-source theme BigCommerce uses as the default on new stores.

Catalyst is BigCommerce's composable, fully customizable headless storefront framework, built with Next.js, React storefront components and the GraphQL Storefront API, and it can be deployed to any hosting provider that supports Node.js. A headless architecture suits brands that need a custom front end, a CMS-led site or several front ends on one backend. When the hosted storefront fits, a Stencil theme is often the faster route.

Yes. With Multi-Storefront, merchants can maintain multiple websites from one BigCommerce store and configure the look, feel, pricing and organization of each one to support distinct brands or sales goals, which suits enterprise brands that run several labels or regions. The same catalog can also sell on channels such as Amazon, eBay and point-of-sale systems.

Yes. We have moved stores to BigCommerce from Magento and from WordPress, including a Magento to BigCommerce migration for Game Exchange of Colorado with custom category-based shipping and ERP integration, and a WordPress to BigCommerce move for Uniform Tactical Supply. Our migration services cover product, customer and order data, URL mapping and redirects, planned to protect search visibility. Moves from other platforms, such as Shopify or WooCommerce, follow the same plan.

Yes. We build B2B and B2C BigCommerce solutions, sometimes on the same catalog. For B2B, BigCommerce's B2B Edition adds company accounts, sales quotes for negotiated pricing, invoice management for purchase orders paid on net terms, user roles and a Buyer Portal where company users request quotes or pay invoices. We build custom solutions, such as bulk ordering forms, where a buyer workflow needs them.

Yes. We build API integrations and custom integrations that link BigCommerce with ERP, CRM, POS and third-party services; BigCommerce documents enterprise integrations for ERP, order management and PIM systems. Its REST Management API covers catalog, orders, customers and channels, and webhooks notify an application when events happen, such as an order being created or a product's inventory changing.

Integrating BigCommerce with an ERP starts by deciding which system owns each record: products, prices, inventory, customers and orders. We then sync them through the APIs, webhooks or middleware, so orders and inventory stay synchronized and staff re-key less data. Complex integrations depend on clear ownership, so we test inventory management and order flows end to end before launch. For SCi, middleware linked BigCommerce with Aptean ERP.

We configure the payment gateways and digital wallets your market needs, such as PayPal, Stripe and Google Pay, and build custom payment integrations where a provider requires one. Checkout options are tested across devices before launch.

BigCommerce states that it is a PCI DSS compliant service provider that validates all requirements (1-12) annually, and merchants can use its Attestation of Compliance for the part it covers. If a custom app or headless build handles credit card data itself, that application needs to be PCI compliant too, so we keep card data inside BigCommerce's payment flow wherever the design allows.

Yes. Our BigCommerce app development services cover private apps for one store and public apps. BigCommerce's APIs, SDKs and toolkits let developers build apps that install on BigCommerce stores, and approved apps can be listed on the App Marketplace. We build custom apps that extend BigCommerce where built-in features stop, and custom software that runs alongside the store when an app is the wrong shape.

Yes. Performance optimization covers theme code, images, third-party scripts and apps, and how much data each page requests. On Stencil, YAML Front Matter lets developers request only the objects a page needs, which BigCommerce says increases page speed. We measure before and after, so the store stays fast on mobile.

Yes. We connect the store to analytics, email, product feeds and marketplaces, so digital marketing runs on accurate customer data and inventory. BigCommerce connects marketplaces, marketing feeds and point-of-sale systems as sales channels that draw on one catalog, which keeps product data consistent across them.

Yes. We add AI personalization, chatbots, recommendations and voice/AI search to the storefront, and use AI in delivery for data mapping during migration and for triaging monitoring alerts after launch.

BigCommerce development cost depends on scope: a theme refresh, a new BigCommerce store, a migration, B2B features and the number of integrations all change the estimate, as do app subscriptions and your BigCommerce plan. We scope the work in a discovery session and share a written estimate before the build starts.

It depends on catalog size, custom functionality and integrations. A theme customization is far shorter than a headless build or a migration with ERP integrations. We agree on milestones at the discovery stage, and each stage ends with a working demo, so progress is visible rather than promised.

Yes. Discovery and planning is the first step of every engagement. We define goals, scope, the storefront architecture and the integration map before any build, whether it is a new eCommerce store or a replatform, and recommend Stencil or headless, one storefront or several, based on your business needs.

Look for technical expertise shown in documented BigCommerce case studies, experience with both Stencil and headless builds, a clear plan for integrations and data migration, QA across devices and payments, and support after launch. Ask who owns the code and accounts, and how the team keeps scalable stores fast as the catalog grows.

Every eCommerce platform has trade-offs. Deep storefront changes happen in Stencil's Handlebars templates or in a headless build rather than in the visual Page Builder alone, some capabilities come from third-party apps that can add subscriptions, and a custom app that handles card data brings its own PCI responsibilities. We weigh these against your roadmap during discovery.

It can. BigCommerce runs the core platform as SaaS with APIs for customization, Multi-Storefront adds brands or regions without a second store, and BigCommerce says its Catalyst storefront supports product catalogs of any size, complexity or update frequency. We plan for that growth: a clean catalog structure, API rate limits planned into integrations, and monitoring after launch.

Yes. BigCommerce runs the core platform as SaaS, so managed services focus on the store itself: monitoring, security reviews, theme and app updates, performance work and conversion improvements after go-live.

Brainvire brings 14+ years in business, 1,000+ Brainers across 10+ global offices and a 95% client retention rate. Our BigCommerce team builds new stores and extends existing ones, including work for SCi, a custom-card retailer, Game Exchange of Colorado and Uniform Tactical Supply, as part of a wider eCommerce development practice with AI built in.