Promecenas

About the project

Promecenas is a technology platform that allows NGOs to digitize their management, increase their visibility, and optimize their monetization through an advanced sponsorship and donation system. The model is 100% free for NGOs (no fixed monthly costs). The platform is sustained solely by transaction commissions on donations and sponsorships, aligning the platform's incentives with the fundraising success of the organizations.

Technologies

Features

• Stripe Connect & Split Payments: Implementation of connected accounts
• Multi-tenant Management: Database architecture in Supabase
• Webhooks & Synchronization: Robust payment event listening system
• Dynamic Pricing Algorithm (Tiered Pricing) for commissions
• Retention Engine (Churn Prevention) for subscriptions
• Pricing Psychology: Optimized checkout with "Cover Fees" option

Technical challenges

• Secure multi-tenant architecture design
• Complex payment flow implementation with Stripe Connect
• Real-time dynamic commission calculation
• Payment event synchronization via Webhooks
• Subscription management and fund reallocation

Learnings

• Adaptation of B2B Fintech models to general NGOs
• Advanced Stripe Connect management
• Data modeling for Multi-tenant applications
• LTV retention strategies in donation models
• Financial process automation

Screenshots

Vista 1

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