Services · E-commerce

Custom E-commerce
Development.

Senior engineers who have built e-commerce systems handling thousands of daily transactions — now building yours. Shopify, headless, fully custom. No templates. No juniors. Fair hourly pricing from $40/hr.

Discuss Your Project
Thousands
Daily transactions handled by systems our engineers have shipped (prior roles)
50+
E-commerce and retail projects delivered end-to-end across our engineers' careers
Multi-platform
Shopify · Headless · WooCommerce · Fully custom
What we build · E-commerce

Every type of
online store.

From a lean Shopify launch to a six-figure custom marketplace — our engineers have built across the full spectrum of e-commerce. Here is what we handle.

🛍
Platform · Shopify

Shopify Stores

Custom themes, app development, and complex Shopify Plus configurations. We go well beyond templates — custom liquid, Storefront API, and metafield architectures.

Architecture · Headless

Headless Commerce

Next.js or Remix storefronts powered by Shopify, Medusa, or custom APIs. Full design freedom, edge-cached performance, and a unified backend across every channel.

🏪
Platform · Multi-vendor

Multi-vendor Marketplaces

Seller onboarding, commission engines, split payments via Stripe Connect, dispute management, and product catalogue tools — built for scale from day one.

🔄
Model · Subscription

Subscription Commerce

Recurring billing, box customisation, skip/pause/cancel flows, dunning management, and subscriber retention tooling. Built on Stripe Billing or ReCharge.

🏢
Model · B2B

B2B Commerce

Customer-specific pricing tiers, quote requests, purchase order workflows, net payment terms, and account hierarchy management for wholesale and trade buyers.

💳
UX · Checkout

Custom Checkout Flows

Multi-step, upsell-rich, or wizard-style checkout experiences. Payment gateway integrations, gift cards, store credit, and post-purchase flows.

🎨
Feature · Configurator

Product Configurators

Visual product builders for custom printing, engraving, made-to-measure, or complex variant selection. Real-time preview, dynamic pricing, and production-ready output.

Feature · Retention

Loyalty & Rewards

Points engines, referral programmes, tiered membership, and rewards redemption at checkout — fully custom or integrated with platforms like Yotpo or LoyaltyLion.

Why a studio

Why not a Shopify agency
or a big team?

i.

vs. Shopify theme studios

Theme studios are fast and cheap for standard stores — but the moment you need custom logic, complex integrations, or anything off the theme framework, they hit a wall. You end up with hacks, undocumented workarounds, and code no one wants to inherit. We build on Shopify without being limited by its theme conventions.

ii.

vs. Large e-commerce agencies

Large agencies staff your project with a mix of seniors, juniors, and coordinators. You are paying for the senior but getting the junior for most of the actual build. With us, every line is written or reviewed by someone with 12–15 years of production experience. The output quality is simply different.

iii.

vs. Freelancer

A single freelancer cannot cover the full stack — storefront, API, payments, devops, performance. You end up managing multiple people or accepting gaps. We work as a coordinated studio: one engagement, full coverage, consistent quality, and a single point of accountability.

E-commerce projects often start as an MVP storefront and evolve into long-term product scaling engagements as you grow. See our full set of capabilities, read about how we work, or learn more about the team behind The Yellow Labs.

FAQ

Common questions.

How much does custom e-commerce development cost?

We bill hourly from $40/hr. A typical Shopify customisation project runs 20–80 hours. A fully custom store from scratch ranges from 150–500+ hours depending on scope. A headless commerce build with a custom storefront generally falls between 200–600 hours. We log every hour and report weekly — no surprises.

Should I use Shopify or build a fully custom e-commerce platform?

Shopify is excellent for most direct-to-consumer stores and is faster to launch. A fully custom build makes sense when you have complex B2B pricing rules, deeply custom checkout flows, multi-vendor marketplace logic, or need tight integration with existing ERP/WMS systems. We help you make the right call upfront — there is no financial incentive for us to push you either way.

What is headless commerce and when does it make sense?

Headless commerce separates the storefront (frontend) from the commerce engine (backend). You get complete design freedom, sub-second page loads, and the ability to sell across multiple surfaces (web, app, kiosk) from one backend. It makes sense when you need brand-differentiated performance or are selling on more than one channel. It adds complexity and cost vs. a standard Shopify theme, so we only recommend it when the business case is clear.

Can you build multi-vendor marketplaces?

Yes. Multi-vendor marketplace architecture is one of the more technically complex areas of e-commerce — seller onboarding, commission logic, split payments, dispute handling, and product catalogue merging all need to be designed carefully from the start. Our engineers have built this type of system and know where the traps are. We typically use Stripe Connect for payment splitting.

How long does an e-commerce project take?

A Shopify theme customisation: 2–6 weeks. A new Shopify store with custom features: 6–12 weeks. A headless storefront: 10–20 weeks. A custom marketplace from scratch: 16–40 weeks. These are ranges — scope, integrations, and feedback cycles all affect the timeline. We give a clearer estimate after a discovery call.

Do you handle payment gateway integration and PCI compliance?

Yes. We integrate Stripe, Braintree, PayPal, and regional gateways. We follow PCI DSS scope-reduction best practices — meaning we keep card data off your servers entirely by using hosted fields or tokenisation. Your servers never touch raw card numbers, which dramatically simplifies your compliance obligations.

Can you integrate my store with my ERP, warehouse, or 3PL?

Yes — order management, inventory sync, fulfilment status, and returns are all areas we have integrated with systems like NetSuite, SAP, Linnworks, ShipBob, and custom warehouse APIs. These integrations are often where off-the-shelf e-commerce platforms fall short, and where a custom engineering team pays for itself.

Let's begin

Ready to build
your store?

Book a free 30-minute call. We'll talk through your project, show you relevant work, and give you a clear sense of scope and timeline.

Book a Free Call

What to expect

Duration30 minutes
FormatZoom / Google Meet
CostFree
BillingHourly from $40/hr
Follow-upNo pressure