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FULL STACK 2026Apr – May 20267 min read

Empeñalo — Fintech Marketplace

A Peruvian fintech marketplace where users pawn/secure items and receive multiple real offers from businesses.

Next.jsReactTailwindSupabaseVercelUpstash Redis

Overview

A Peruvian fintech marketplace where users "empeñar" (pawn/secure) items and receive multiple real offers from businesses. Dark, premium tech aesthetic with both customer and business sides — item publishing, proposal management, and a multi-stage scaling roadmap.

The Problem

Traditional pawn shops offer opaque pricing and require in-person visits. Empeñalo digitizes the process, letting users list items and receive competitive offers from multiple businesses transparently.

Questions Addressed

  1. 01

    How can we build a two-sided marketplace that scales from local to national?

  2. 02

    What real-time features are needed for a smooth offer negotiation flow?

Methodology

Phase 1

Customer Marketplace

Built the customer-facing side: item listing with image uploads, offer inbox with real-time updates via Supabase subscriptions, and secure messaging between parties.

Next.jsReactTailwindSupabase
Phase 2

Business Dashboard

Built the business side: item discovery feed, proposal creation with configurable terms, pipeline management, and analytics dashboard for offer conversion rates.

Next.jsReactSupabaseVercel
Phase 3

Performance & Scaling

Implemented Upstash Redis for rate limiting and caching. Optimized real-time subscriptions for low latency. Prepared multi-stage scaling roadmap for national expansion.

Upstash RedisVercelNext.js

Key Results

2-sidedCustomer + Business marketplace
Real-timeOffer management system

Key Findings

01

Real-time offer notifications via Supabase subscriptions increased engagement by keeping both parties in sync without polling.

02

Dark premium aesthetic differentiated the platform from traditional classifieds sites.

03

Rate limiting via Upstash Redis prevented abuse while maintaining sub-100ms response times.

Conclusion

Empeñalo demonstrates how modern web technologies can modernize traditional financial services. The two-sided marketplace architecture with real-time features provides a blueprint for similar lending and offer-based platforms.

Gallery

Empeñalo — Fintech Marketplace screenshot 1