Marketplace Solutions
Enterprise Multi-Vendor Marketplace Platform
High-Scale B2B/B2C Multi-Vendor Platform with Automated Vendor Onboarding, Split Payments & Global Logistics
We built a comprehensive, high-scale multi-vendor marketplace platform powering 5,200+ global merchants with automated split payouts, localized tax calculation, and real-time inventory management.
E-Commerce & Retail10 monthsTeam: 18 Engineers$250,000Completed & Deployed
Technology
Next.js 14TypeScriptNode.js (Microservices)PostgreSQL & RedisStripe Connect Custom Split PayoutsElasticsearch (Search Engine)Docker / AWS EKS
Platform
Web PortalMobile AppVendor Dashboard
5,200+
Vendors
$14.8M
monthlyGmv
99.99%
uptime
+34%
conversion
2.4M
ordersProcessed
54+
countriesServed
Overview
Project Overview
For an international retail consortium expanding into multi-seller e-commerce, operating independent regional portals created fragmented customer experiences and massive operational overhead. Ctas Info Services engineered an enterprise-grade B2B/B2C multi-vendor marketplace platform consolidating over 5,200 independent vendors onto a unified, high-performance platform. Featuring automated Stripe Connect split payments, an Elasticsearch product engine, localized multi-currency checkout, and self-serve vendor portals, the platform processes over $14.8M in monthly GMV with 99.99% uptime while cutting vendor onboarding friction by 75%.
Client Context
A premier global retail consortium empowering independent manufacturers and brands to sell direct to global consumers.
Successfully unified 5,200+ global independent merchants onto a single seamless marketplace platform
Processed over $14.8M in monthly GMV with 99.99% system uptime and sub-second page load times
Accelerated merchant onboarding timeline by 75% with automated KYC verification and bulk inventory import tools
Challenges
Key Challenges
Obstacles we identified and addressed during the project.
- 1Orchestrating complex split payments, platform commissions, and escrow holding across thousands of international vendors
- 2Ensuring sub-second search and product filtering performance across millions of dynamic multi-vendor SKU listings
- 3Automating real-time vendor shipping rate calculations, multi-origin logistics, and global tax compliance (VAT/GST)
- 4Handling extreme flash-sale traffic surges without inventory over-selling or database concurrency locks
- 5Providing intuitive self-serve dashboards for vendors with zero technical background to manage catalogs and orders
Solutions
Our Solutions
Technical and strategic approaches that resolved each challenge.
- Implemented Stripe Connect Custom accounts for automated split payment routing, fee deduction, and localized seller payouts
- Built a dedicated Elasticsearch cluster with instant autocomplete, multi-facet filtering, and dynamic vendor ranking algorithms
- Integrated automated tax calculation microservices (Avalara) and multi-carrier API webhooks (Shippo & EasyPost)
- Engineered optimistic concurrency locking with Redis distributed locks for zero-oversell checkout operations during high traffic
- Designed a modern React vendor dashboard with bulk catalog import tools and automated order fulfillment pipelines
Highlights
Project Highlights
Key features and achievements delivered.
1
Successfully unified 5,200+ global independent merchants onto a single seamless marketplace platform
2
Processed over $14.8M in monthly GMV with 99.99% system uptime and sub-second page load times
3
Accelerated merchant onboarding timeline by 75% with automated KYC verification and bulk inventory import tools
4
Achieved a 34% increase in buyer checkout conversion with localized multi-currency and payment method support
5
Zero inventory over-selling during peak Black Friday sales surges with over 80,000 concurrent shopping carts
Goals
Strategic Objectives
Strategic objectives that guided the project.
Unify fragmented multi-region sellers into a single authoritative, high-converting e-commerce marketplace
Automate complex vendor commission deductions, split payment payouts, and tax compliance across 50+ countries
Provide independent vendors with powerful self-serve tools for order tracking, inventory updates, and sales analytics
Deliver a lightning-fast mobile-responsive shopping experience with personalized AI recommendation feeds
Strategy
Implementation Approach
Implementation approach and technical decisions.
Outcomes
Achieved Results
Measurable results and business impact.
Vendor Satisfaction — Achieved a 98% vendor retention rate with automated payouts and transparent commission tracking
Operational Scalability — Enabled 10x vendor growth without increasing core marketplace management staff
GMV Growth — Delivered over $14.8M in monthly gross merchandise value within the first year of operation
Client
Our Client
Who we built this for.
TradeHub International
B2B & B2C Retail Consortium · Enterprise (5,000+ Merchants) · London, UK & Dubai, UAE
A premier global retail consortium empowering independent manufacturers and brands to sell direct to global consumers.
Client Requirements
- 1
Scalable architecture supporting 5,000+ concurrent active merchants
- 2
Automated split payouts and tax compliance in EU, US, and Middle East
- 3
Sub-second catalog search across 2M+ product SKUs
- 4
Robust REST APIs for ERP and warehouse synchronization
Solution
Proposed Solution
Our approach and rationale.
Our Approach
A modular microservices architecture utilizing Next.js 14 for high-speed SSR frontend performance, Node.js microservices for business logic, Stripe Connect for automated financial split payouts, and Elasticsearch for sub-second product discovery across millions of SKUs.
Why We Choose This Solution?
- Next.js App Router provides superior SEO performance and fast page load times for high customer conversion
- Microservices design allows independent scaling of checkout, catalog search, and seller portal services
- Stripe Connect integration eliminates payment legal risks and automates complex multi-country seller payouts
- Proven expertise in building complex e-commerce platforms handling millions of orders
Benefit of This Solution
A battle-tested, enterprise multi-vendor marketplace ecosystem that scales merchant revenue infinitely, automates payouts, and delivers a world-class shopping experience.
Features
Key Features
Core platform capabilities delivered.
Vendor Self-Serve Portal
Comprehensive analytics dashboard, order fulfillment suite, and instant bulk inventory upload tools.
Automated Split Payouts
Stripe Connect integration for dynamic commission deductions and instant seller payouts globally.
Global Multi-Currency Checkout
Multi-currency support with localized tax calculation (VAT/GST) and real-time exchange rates.
AI Recommendations & Search
Elasticsearch-powered smart search with personalized AI product recommendation widgets.
Multi-Carrier Logistics Integration
Automated shipping label generation, multi-package tracking, and buyer status notifications.
Dispute & Refund Resolution
Centralized buyer-seller messaging hub with automated escrow holding for smooth dispute management.
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