For Medusa.js + Headless Commerce

Payments integration, underwriting, and AI dev for Medusa.js and emerging headless platforms.

Proficient builds direct payment integrations, handles merchant onboarding and underwriting, and engineers the tooling that connects your Medusa.js storefront to production-grade processing infrastructure.

What we build

The full stack, from plugin to banking line.

01

Direct Payment Provider

A native Medusa.js payment provider plugin that routes transactions straight to Proficient's processing infrastructure. Installs via npm and handles the full transaction lifecycle — authorization, capture, void, and refund.

02

Merchant Underwriting & Onboarding

In-house underwriting for every merchant type including the high-risk categories Medusa storefronts commonly serve — nutraceuticals, subscriptions, digital goods, high-ticket retail, and more. We hold the banking lines, so approval decisions are made here.

03

Custom Gateway Architecture

For merchants that need routing logic, multi-acquirer failover, or a branded processing layer, we architect the gateway infrastructure to fit — built around your business model and operated end-to-end.

04

AI Development & Platform Engineering

AI-assisted development for Medusa.js customizations, headless commerce builds, and integration engineering — from checkout flow optimization to AI-driven fraud signals wired into the payment lifecycle.

Proficient + Medusa.js

Built for headless. Underwritten for reality.

Medusa.js is an open-source headless commerce engine built for developers who want full control over their stack — without the constraints of Shopify, BigCommerce, or platform-locked checkout flows. Proficient is the payment and underwriting partner built to match that philosophy. We write the payment provider, hold direct banking relationships, underwrite the merchant account in-house, and handle the technical integration from npm install to live transactions — so your Medusa.js build ships with payment infrastructure that is owned, not rented.

Free consultation

Ready to ship payments on your own infrastructure?

Tell us about your Medusa.js project. We will scope the integration, advise on merchant account structure, and get you to live payments on infrastructure built around your storefront.