Promecenas

About the project

Promecenas is a platform for NGOs that digitizes operations, sponsorships, and donations with a no-fixed-cost model sustained by transaction commissions.

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

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