Constract
A multi-vendor marketplace platform with secure checkout, vendor dashboards, and role-based access for buyers, vendors, and admins.
Client
Constract
Role
Full-Stack Development, Platform Architecture
Year
2025
Overview
Constract is a multi-vendor marketplace connecting buyers with vendors of building materials and construction products. Kemma Technologies designed and built the platform end-to-end — from product catalog to checkout to vendor operations.
The Challenge
Bringing multiple vendors onto a single marketplace requires more than a storefront. It needs distinct, secure experiences for buyers, vendors and administrators, plus reliable order tracking from checkout through to delivery.
Our Approach
We built Constract on Next.js with Supabase handling authentication and data, implementing role-based access across three distinct portals: a customer-facing storefront with cart and checkout, a vendor dashboard for managing listings and orders, and a super-admin console for platform oversight. Order tracking, profile management and a materials and product catalog service round out the core platform.
Outcomes
- Live, in-production marketplace processing real customer orders
- Distinct authenticated experiences for customers, vendors and admins
- Full order lifecycle from cart to tracking, with no manual intervention required