BigCommerce Store Development
A BigCommerce Development Agency For Stores That Keep Growing
BigCommerce gives you a hosted platform with an unusually open API, and the difference between a good build and a slow one is how well you use it. We work in Stencil, keep customisation out of the theme where it does not belong, and design the catalogue so it still filters fast at scale.
Triple Protection Guarantee
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Triple Protection Guarantee:
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Years In Business
0
+
Engineers On Staff
0
+
Avg. Engineer Exp.
0
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Where Stores Slip
Real Store Speed
Benchmarked
Senior Engineers
Vetted Only
Timezone Overlap
Live Hours
Stencil Themes
Built By Hand
Delaware LLC
US Entity
Checkout Flow
Load Tested
Code Review Gate
Every Merge
Staged Release Plan
Rolled Out
API Rate Plan
Respected
IP Assignment
Signed
Delivery Overlap
Fixed
Hours
Site & Repo Owner
You
Trusted By Startups
What Our BigCommerce Website Development Services Do
BigCommerce website development services earn their fee in the places a hosted platform still leaves open. Theme work, where a Stencil build and a page-builder edit can overwrite each other. Catalogue design, where option sets and variants decide whether filtering stays fast past ten thousand products. API budgets, which a nightly sync will exhaust at the worst hour. We build in Stencil, put logic behind the APIs not the theme, and treat checkout as something you still control.
Stallyons is registered in Delaware as a US company, and our engineers work a time-zone window agreed before the project starts, with four-plus hours of daily overlap. You sign a US contract, run diligence on a US entity and pay one US invoice. Behind the work sits twelve-plus years of delivery across six continents and around thirty-five engineers, averaging four-plus years of production experience. Merchants come to us when a BigCommerce store has outgrown a template and needs the platform used properly.
What A Store Build Covers
A catalogue model agreed before code: categories, variants, option sets, custom fields and the filters shoppers will actually use, so search and faceting stay fast when the product count doubles.
A real Stencil theme rather than a bought one bent out of shape: Handlebars templates, componentised styles and a local build you can run, so the storefront is yours to change without a marketplace.
Integrations that respect the platform: Catalog and GraphQL APIs used for what each is good at, webhooks instead of polling, and syncs written to live inside the API limits rather than against them.
Customisation in the right place: Script Manager and widgets for injected behaviour, so a theme update does not silently remove the tracking and personalisation you depend on.
Quality you can inspect: code review on every merge, automated checkout and catalogue tests, a sandbox store that mirrors production, and work tracked on your own board.
One accountable vendor: one contract, one invoice and one entity for legal and finance to run diligence on, instead of a spread of contractors across four jurisdictions.
Why Buyers Screen A BigCommerce Development Agency Hard
- Ask whether the theme is a Stencil build or a marketplace theme with overrides stacked on it. The second kind gets expensive the first time you want a structural change.
- Ask where custom logic will live. Script Manager, widgets and the APIs survive a theme update. Code pasted into a template does not, and nobody notices until it is gone.
- Ask how the catalogue is modelled. Variants, option sets and custom fields decide whether faceted filtering stays quick once the product count grows.
- Ask what happens to your API budget. A sync that polls every minute will spend the store's rate limit and then start failing during the busiest hour of the busiest day of the year.
- Check the exit before you need it. The store account, the repository, the domain and the theme source all sit in your own name, so changing supplier is administration.
- Ask for the release plan. A sandbox store that mirrors production, a rehearsed theme deployment and a rollback route, all agreed before the first push to the live store.
How A BigCommerce Project Starts With Us
Every project starts with a free 45-minute scoping session. No slide deck, no sales script. You bring the catalogue, the order volume and the systems it has to talk to; you leave with a build plan and a timeline.
We are selective about new projects and cap how many we run at once, because the scoping is the product. If BigCommerce is the wrong home for what you sell, we will say so before you buy it.
Why Clients Choose Us
Full
Written IP Transfer
USA
Contract Entity
Yours
Store And Repos
Named
Delivery Lead
Ready for a BigCommerce store built properly?
What We Build In BigCommerce
The BigCommerce Development We Deliver
Every store is different and the underlying jobs repeat: model the catalogue, build the theme, wire the systems behind it and keep checkout converting. These are the BigCommerce builds we deliver most often.
Custom Store Builds
Stencil themes, templates, pages
End-to-End
Custom Theme Work
Handlebars, styles, components
Yours Outright
Headless Builds
GraphQL storefront, React front end
Decoupled
Multi-Storefront Setup
Brands, regions, shared catalogue
One Back Office View
Speed Work
Templates, assets, Core Vitals
Pages Load
Catalogue Modelling
Variants, options, custom fields
Filters
APIs And Integrations
Catalog v3, webhooks, ERP links
Linked
Store QA Coverage
Checkout, tax and catalogue test suites
Sign-Off
Store Rescue Work
Theme rebuilds, cleanup, upgrades
Made Stable
Care & Update Plans
Monitoring, changes, safe releases
Kept Running
Not sure which of these your store needs? Let us map it.
Common Challenges
Why Do BigCommerce Stores Stall?
Six patterns behind almost every BigCommerce store that has to be rebuilt. All six start with a shortcut at launch.
Theme Bent Badly
01
A marketplace theme was bought and then modified past recognition. Every upgrade now means redoing the modifications, so the upgrade never happens and the store drifts further from support.
Logic In The Theme
02
Tracking, pricing rules and personalisation were pasted into templates instead of Script Manager or the APIs, so a theme deployment removes half of them.
Catalogue Modelled
03
Variants, options and custom fields were decided product by product. Filtering now returns the wrong things, and fixing it means re-importing the whole catalogue.
API Budget Spent
04
An integration polls the Catalog API on a timer rather than listening for webhooks. It works for months, then exhausts the rate limit on the busiest trading day of the year.
Checkout Left Untouched
05
The platform lets you shape checkout and nobody did. Shipping, tax and payment options arrive in an order that makes sense to the admin screen rather than to the person paying.
Access Held By Agency
06
The store owner account, the repository and the theme source sit with a supplier. Changing agency becomes a negotiation, because nobody else can deploy a change.
Recognise a few of these? Let us fix it properly.
Our BigCommerce Services
6 BigCommerce Development Services
Six ways to buy BigCommerce delivery from one accountable vendor. Run one, or run several in parallel under a single contract.
Custom BigCommerce Builds
01
End-to-end delivery of a defined BigCommerce store: catalogue model, design, Stencil build, checkout and integrations tested, and launch, with a named lead reporting into you.
Custom Theme Design
02
Custom BigCommerce theme development in Stencil rather than a marketplace theme reworked: prototyped in Figma, delivered as Handlebars templates you can build locally.
Headless Storefront Builds
03
A decoupled front end on the GraphQL Storefront API when the design outgrows a theme, with BigCommerce still handling catalogue, orders and checkout.
Speed & Catalogue Work
04
Profiling a slow storefront to the template, then fixing it: asset weight, filter design, option sets, image handling and the scripts costing you a whole second.
Backends & Integrations
05
The systems behind the store, built by our own API development practice: accounting, fulfilment, CRM and product feeds, wired both ways.
Store Care & Maintenance
06
Theme and app changes rehearsed on a sandbox store, uptime and checkout monitoring, and a monthly read on what is slowing the storefront down.
Not sure which piece you need first? Let us scope it together.
Why Choose Us
What Makes Our BigCommerce Development Different
The details that decide whether a store still runs well two years and four hundred orders later.
A US Legal Entity
01
Stallyons is registered in Delaware. Your contract, your invoice and your legal recourse sit with a US company, not an unknown one.
Real Stencil Builds
02
Themes are built in Stencil and versioned in your repository, not bought and bent, so the next change is a task rather than an excavation.
Overlap You Set
03
You choose the hours we share with your working day, and stand-ups, reviews and escalations all happen inside that window.
Logic Where It Lives
04
Behaviour lives in Script Manager, widgets and the APIs rather than pasted into templates, so a theme deployment never removes it.
Reviewed Code
05
Every merge is reviewed against an agreed definition of done, on your board, where you can read it yourself.
One Contract
06
One contract covers the engagement, so procurement, legal and finance each deal with a single named counterparty.
Ready to see what a proper store build looks like?
Our Process
From First Call To Store Launch In Six Steps
A build process that settles the catalogue, the theme and integrations before any pages.
Discovery
Understand the catalogue, orders and buyers
Scoping
Agree the catalogue model, scope and cost
Design
Category, product and checkout screens mapped
Contracting
NDA, IP assignment, access and onboarding
Deliver
Built in Stencil, reviewed on merge
Launch & Tune
Go live, then watch speed and checkout
Want to see how this maps to your roadmap?
Technology Stack
What Our BigCommerce Developers Work With
The platform, APIs and infrastructure we build stores on, and the tooling that ships them safely.
Core Platform
BigCommerce API
Stencil Themes
Handlebars Views
Stencil CLI
Sandboxes
Catalog & Storefront
Catalog v3
GraphQL Storefront
Facet Filters
Widgets
Page Builder Edits
Checkout & Pay
Open Checkout
Checkout SDK
Multi-Currency Pricing
Tax Providers
Price Lists & Groups
Data & Scaling
Headless React
Multi-Store
Rate Limits
Script Manager API
Webhook Delivery
Build & Deliver
Node Build Tools
TypeScript UI
Automated QA Runs
Edge Hosting & CD
Repos & Pipelines
Who We Build This For
BigCommerce Development For Every Kind Of Store
Eight kinds of merchant with different catalogues and one shared need: a store that keeps taking orders.
Fashion & Apparel
Sizes, variants, returns flow
Health & Supplements
Compliance copy, subscriptions
Auto Parts & Fitment
Year, make and model lookups
Home & Furniture
Big items, freight, lead times
Electronics & Devices
Deep specs, warranties, bundles
Food, Drink & Subscription
Recurring orders, delivery slots
Trade & Wholesale
Price lists, quotes, accounts
Sports & Outdoor Gear
Sizing, kit builders, bundles
Working in another sector? See all industries we serve.
How We Compare
Your BigCommerce Development Options, Compared
An honest look at your four delivery options.
| Capability | Theme Marketplace | In-House Generalist | Freelance Store Dev | Stallyons Technologies |
|---|---|---|---|---|
| Theme built in Stencil | ✕ Bought and bent | Partly | Varies by developer | Built and versioned |
| Where custom logic lives | ✕ Pasted in templates | Mixed practice | Wherever it fits | Scripts, widgets, APIs |
| Catalogue and filter design | ✕ Not considered | Found after launch | Product by product | Modelled before code |
| API limits and webhooks | ✕ Out of scope | Polling by default | Learned the hard way | Budgeted and event led |
| Multi-storefront support | ✕ Single store only | Duplicated stores | Rarely attempted | One catalogue, many fronts |
| Headless option available | ✕ No | Separate team | Simple front ends | GraphQL storefront builds |
| Store and repo ownership | Varies | Your own accounts | ✕ Held by developer | Yours from day one |
See the difference for yourself
Complete Engagement
Everything Included In Your BigCommerce Development
From Scoping to Contracting to Delivery, One Vendor
Here is everything included when you build your store with us:
One Store Build Price: No Hidden Fees, And No Surprises.
Every BigCommerce engagement includes all eight components above. One contract, one senior team, one predictable cost, and no vendor sprawl.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free Store Review
A written read on your theme, catalogue model, integrations and storefront speed, with the fixes ordered by what is costing you orders first.
Included Free
Build Plan And Estimate
A phased build plan with scope, milestones, the integrations it needs and a transparent, itemised estimate for the engagement.
Included Free
Free Vendor Checklist
The questions we would ask any BigCommerce development agency about themes, catalogue design, APIs and releases, so you can test us too.
Included Free
Risk-Free Partnership
Our BigCommerce Build Promise
We stand behind every engagement with commitments that protect your investment.
01
Scope Agreed First
Scope, model, working hours and cost structure are written down and agreed before contracting, so nothing is discovered later.
02
Built to Last
Senior developers, code review, automated tests, security and accessibility audits, and clean, documented code you fully own.
03
IP And Access Protected
NDA and IP assignment are signed before access, permissions are scoped per person, and your accounts stay under your control.
Start your BigCommerce build with confidence, backed by our Triple Protection Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"Stallyons took our Figma design and built it into a live web application, a cognitive game with level-based match play, messaging, a tutorial, and a directory that ranks users nationally. What impressed me most was their grasp of the code behind that logic, and the quality of the experience. Delivered on time with steady updates."
Jerry L.
Founder
PicCiti LLC
"We brought Stallyons in to absorb an overflow of work, and they delivered ten iOS and Android apps, from reporting to geo-location for logistics, plus several backend systems, owning design, development, and app-store submission. Everything stood out: code quality, speed, and reliability. Perfect code, on time, adopted company-wide."
William B.
Director
Amplo Solutions
FAQ
Frequently Asked BigCommerce Store Questions
BigCommerce website development services cover the work a hosted platform still leaves to you. That means modelling the catalogue so variants, option sets and filters behave at scale, building a real Stencil theme rather than reworking a bought one, putting custom behaviour in Script Manager and the APIs where a theme deployment cannot erase it, and wiring integrations that live inside the platform’s rate limits rather than against them.
A Stencil theme renders the storefront from BigCommerce itself using Handlebars templates, so you get the platform’s SEO, checkout and page-builder tooling without running your own front end. A headless build serves the storefront from your own application against the GraphQL Storefront API, buying design freedom and speed at the cost of owning that application. Most stores are better served by Stencil. Headless earns its keep when the front end is the product itself.
Cost follows the size and shape of the catalogue, whether the theme is custom or adapted, how many systems the store must talk to, and whether you need one storefront or several, so a figure before scoping is guesswork. Integrations and catalogue complexity move it more than page count. We scope first, then price, and itemise each phase so you can cut before you commit.
Ask whether the theme will be a Stencil build you can compile yourself. Ask where custom logic will live, because anything pasted into a template dies at the next deployment. Ask how the catalogue and its filters are modelled. Then ask who holds the store owner account and the repository. The answers show whether BigCommerce is a specialism or a default.
You do, from the first day. The store owner account, the domain, the repository, the theme source and the payment accounts are registered in your name, and NDA and IP assignment are signed before anyone gets access. Everything written on the engagement is assigned to you outright, with no licence-back.
Yes, and it is usually the cheaper path over a few years. Custom BigCommerce theme development in Stencil gives you Handlebars templates, a local build and a versioned repository, so changes are ordinary development work. A marketplace theme modified past recognition costs less on day one and more at every upgrade after that.
The APIs are unusually open and checkout is unusually editable, so more of the store is yours to shape, and the theme layer stays lighter as a result. The trade is that you work inside API rate limits and platform conventions. If you are weighing platforms rather than vendors, our ecommerce development team can compare them with you.
Often, and it is usually the better option. We audit the store first, then fix in order of what is costing you orders: checkout, storefront speed, catalogue and filters, then the integrations. If you are considering moving to or from another platform rather than staying, that is handled by our ecommerce migration services team.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready To Build A Store That Keeps Selling?
Get a free consultation. We will walk your store, name what is costing you orders, and send a written proposal.
