Ecommerce Development

Custom ecommerce, engineered to scale.

From marketplace logic to headless storefronts built for what's next.

We build ecommerce platforms from the ground up, not template implementations, but custom commerce architecture designed around your business model. From marketplace payouts and affiliate tracking to headless storefronts and API-first catalog management, our team builds the infrastructure that lets commerce scale cleanly.

We design for how buyers shop today and how AI agents will shop tomorrow, with clean product data, machine-readable catalogs, and real-time inventory endpoints that make your platform ready for whatever comes next. Whether you are replacing a legacy system, launching a new marketplace, or need ecommerce infrastructure that can handle serious traffic, we build it right the first time.

You'll Be In Good Company

Working with HFC has given us a competitive advantage, streamlined our workflows, and most importantly, their expertise has helped create a user experience unmatched by our rivals.

Jon Davis

Architectural Designs | CEO

Illustration of building a robot step by step

Our Ecommerce Toolkit

Custom commerce architecture built around your business model, not a platform's limitations.

Custom storefront development, headless and traditional
Marketplace architecture with multi-vendor payouts and affiliate tracking
API-first catalog management and real-time inventory systems
Payment processing, Stripe Connect, and complex checkout flows
Performance optimization for high-traffic and high-SKU environments
Third-party integrations across ERP, fulfillment, and logistics platforms
Agentic-ready data architecture with machine-readable product feeds and clean APIs

HappyFunCorp has been my go-to team on multiple projects. They are leaders in design best practices and are passionate about uncovering and solving product challenges. The team collaborates effectively with both product and technology teams, and delivers results that exceed expectations.

Corey Wendling

Axoni | Senior Vice President of Engineering

From Our Blog

Scaling Ecommerce When Traffic Spikes 10x Overnight

Here are the architecture decisions that helped Bookshop.org go from launch to $65M in year one when traffic arrived months ahead of plan.

February 24

How to Modernize a Legacy Application (Step by Step)

A practical guide to legacy app modernization covering assessment, strategy selection, sequencing, roadmap planning, and phased execution for product and engineering leaders.

March 23

Let's Chat

We're ready when you are.