Back to Portfolio
E-CommerceNext.jsStripe ConnectAWS S3PostgreSQL
Gridlock Marketplace
A highly robust, two-sided decentralized marketplace designed to orchestrate vendor onboarding, escrowed transaction flows, buyer protection features, and verification controls.
Core Features
Interactive merchant onboarding flows leveraging Stripe Connect Custom
Secure multi-day escrow fund locks with automatic buyer-seller release timers
Comprehensive customer dispute resolution ticket pipeline and admin panel
Distributed media assets upload system storing images securely on AWS S3
System Architecture
Frontend Layer
Next.js, Tailwind CSS, Radix UI, TanStack Query, Framer Motion
Backend Layer
Node.js, Stripe API, AWS S3 Client SDK
Database & Storage
PostgreSQL with complex transactional locking
DevOps & Deployment
AWS ECS, Vercel, Route53, Sentry monitoring
Dynamic Problem Solver
The Solution Impact
Transaction Volume
scaled transactions to over $1.2M GMV in the first year of deployment
Escrow safety
automated ledger validation guarantees zero funds escape lock without absolute buyer approval or admin override
Media Storage
pre-signed edge URLs completely bypass main servers, preventing high-bandwidth network cost during multi-image listings upload
Tech Stack
Next.jsTailwind CSSRadix UITanStack QueryNode.jsStripe ConnectAWS S3 SDKPostgreSQLAWS ECSVercelSentry