Custom BigCommerce development beyond Stencil themes.
Custom BigCommerce development for stores that need more than configuration — Stencil features, v3 API integrations, headless builds, and the complex backend logic that makes B2B commerce actually work.
Stencil Development
Custom Stencil components, scripts, and storefront logic. We know the Stencil framework by heart — template hierarchy, Page Builder regions, checkout SDK, and the full BC storefront JS API.
- Stencil CLI
- Handlebars
- Storefront JS
- Checkout SDK
v3 API Integrations
Every BigCommerce API endpoint — products, orders, customers, price lists, scripts, storefront tokens, webhooks. We build against v3 exclusively and handle the edge cases that break naive integrations.
- v3 REST API
- GraphQL SF API
- Webhooks
- Storefront tokens
B2B Edition Engineering
Price lists, customer groups, quotes, NET terms, PO checkout, sales-rep login-as-customer, multi-account switching — the B2B Edition features that require engineering to unlock their full value.
- B2B Edition
- Price lists
- Quote builder
- Sales-rep portal
Headless Commerce
BigCommerce as a backend, custom frontend on Next.js via BigCommerce Catalyst. For stores that need full control over the rendering layer, edge delivery, or cross-channel storefronts.
- Catalyst
- Next.js
- GraphQL
- Vercel / Cloudflare
ERP & Data Sync
Real-time and scheduled sync between BigCommerce and NetSuite, SAP, Acumatica, and custom ERP systems. Price lists, inventory, order status, customer records — bidirectional, idempotent, audited.
- NetSuite
- SAP
- Acumatica
- Custom ERP
14,802 SKUs. 18 price tiers.
Replatformed an industrial B2B distributor onto BC B2B Edition with NetSuite price-list sync, real-time LTL freight quoting, sales-rep portal, and Avalara tax automation. 14 weeks, no SEO loss.
- BigCommerce
- NetSuite
- LTL freight
- +62% revenue
Production-grade engineering, not prototype shortcuts.
Every integration is built with security, idempotency, and observability in mind — not just the happy path.
- Idempotent webhooks. Dedup tables, event IDs, replay-safe side effects.
- Retry queues. Exponential backoff with dead-letter alerting — no silently lost data.
- Audit logging. Every API action logged with actor, timestamp, and payload.
- Test coverage. PHPUnit + Jest, 80%+ coverage enforced in CI before any production deploy.
Order sync · live
ProductionFrequently asked questions
Do you work on hourly engagements or fixed-scope projects?
Both. Fixed-scope for greenfield builds and redesigns — you know the cost before we start. Hourly retainers for ongoing development, bug fixes, and feature additions.
Can you take over a BigCommerce store built by another agency?
Yes. We do a technical audit first — Stencil codebase health, API integration quality, any webhook or script debt — then scope the work from there.
Do you build on BigCommerce Catalyst / headless?
Yes. We build headless BigCommerce on Next.js via Catalyst for stores that need full rendering control, edge delivery, or cross-channel storefronts. Most stores don't need it — we will tell you if Stencil is the better fit.
How do you handle ERP integrations that require real-time pricing?
We use a combination of scheduled sync (for bulk price-list updates) and webhook-driven updates (for individual SKU changes), with a Redis cache layer so storefront reads stay fast even during sync.
Get a free technical audit of your BigCommerce store.
A real assessment from an engineer, delivered in 1 business day:
- One-page snapshot: BigCommerce health, performance, and UX flags
- AI-readiness / GEO score: how visible you are to ChatGPT, Perplexity, and AI Overviews
- Your 3 highest-leverage fixes, prioritized by revenue impact
Prefer to talk first? Call directly: 877.696.3475
Custom ecommerce engineering, AI apps, and SEO — typically 60–80% less than traditional agency pricing.
20+ years of BigCommerce engineering, now AI-augmented. Tell us your store, your stack, and your deadline — we quote fixed scope on the first call.