We're seeking an experienced backend developer to build the robust server-side infrastructure for Source Impact, a fully-functional mobile app connecting influencers, brands, and agents in a commission-based marketplace. The frontend is 100% complete (React Native + Expo, TypeScript) and production-ready, with beautiful UI, AI integrations (GPT-4, DALL-E, etc.), and comprehensive features like real-time messaging, escrow payments, rewards systems, and gamification. Your role: Implement the backend to bring the app to life. This includes database setup, API development (90+ endpoints), payment integrations (Stripe), real-time features (WebSockets), and business logic for commissions, referrals, and escrow. Detailed specs, schemas, and roadmaps are provided in our GitHub repo—no guesswork required. github https://github.com/wilsonhazen/SI-with-backend-instructions please read the md files, especially the backend integration files before bidding