Multi-vendor marketplace development
— 50+ launched across 13 countries.
Qarbi is the implementation partner behind Ultracommerce's marketplace platform - powering multi-vendor commerce across 15 industries. We build marketplace architectures that handle vendor onboarding, split-order fulfillment, and commission complexity that off-the-shelf solutions can't touch.
Marketplaces are the hardest ecommerce
model to get right.
Building a marketplace isn't like building a store. A store has one seller, one inventory, one checkout. A marketplace has dozens - or hundreds - of sellers. Here's where marketplace projects typically break:
Purpose-built marketplace architecture
Vendor Lifecycle Management
Order & Fulfillment
Commission & Payments
Catalog & Search
The two best marketplace platforms
Ultracommerce - Purpose-Built
Built from the ground up for multi-vendor commerce. Native vendor management, commission engine, split payments, and marketplace operations. MACH-certified, composable, and deployed across 50+ marketplaces in 13 countries.
Best for: Operators building a marketplace-first business.
Adobe Commerce + Extensions
For businesses already on Adobe Commerce who want to add marketplace capabilities. Using extensions like Webkul Multi-Vendor or custom-built modules, we layer marketplace functionality onto your existing infrastructure.
Best for: Existing Adobe Commerce stores adding a vendor channel.
Every marketplace is different.
We've built most of them.
50+ marketplaces. 13 countries. Here's one.
Ultracommerce Platform Partnership
Qarbi re-architected Ultracommerce's multi-vendor marketplace platform, serving as the core engineering partner for their enterprise deployments.
- 570+ enterprise marketplace features shipped
- 50+ marketplaces across 15 industries and 13 countries
- 14 weeks from discovery to initial launch
- 40% development cost savings vs. traditional agency approach
Brands powered by the platform include: LG, IKEA, Sotheby's - among others across the Ultracommerce ecosystem.
What it actually takes to launch a marketplace
Phase 1: Discovery & Architecture
2–3 weeksBusiness model analysis, vendor workflow mapping, commission structure design, integration requirements, and technical architecture.
Phase 2: Core Platform Build
8–12 weeksVendor onboarding, product catalog, unified cart, split checkout, commission engine, operator dashboard, and foundational integrations.
Phase 3: Launch & Optimize
2–4 weeksBeta testing with initial vendors, performance optimization, payment flow validation, and go-live.
Total: 12–19 weeks for a fully functional marketplace. Our rates are 40% less than AU/US agencies for the same senior engineering.
Questions about marketplace development
Shopify marketplace apps work for simple setups — a handful of vendors with basic needs. But they break at scale: limited commission logic, no real split payments, poor vendor management, and performance issues with large catalogs. If you're building a real marketplace business, you need purpose-built architecture.
Absolutely. Most successful marketplaces launch with 5–20 vendors and grow from there. We'll build the architecture to scale from day one, but scope the initial build to get you to market fast with your founding vendors.
We integrate with Stripe Connect or PayPal for Marketplaces for automated split payments. When a customer pays, funds are automatically divided between the vendor(s) and the marketplace operator based on your commission rules.
Common scenario. We can build feed integrations that sync vendor product data from their existing stores (Shopify, WooCommerce, custom) into your marketplace. Vendors manage products in their system; changes flow to the marketplace automatically.
The platform includes vendor verification workflows, product approval queues, automated listing quality checks, buyer/seller rating systems, and dispute management tools.
That's what the discovery phase is for. We'll help you think through commission structures, vendor value propositions, chicken-and-egg launch strategies, and unit economics before writing a single line of code.
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