Full-Stack Developer - DocuSign + Stripe + Existing App Integration

Need a senior developer to extend an existing React/Node/Postgres application. Scope: * Customer intake portal * Secure file uploads * DocuSign embedded signing * Stripe payments * Automated claim/record creation * Workflow automation Phase 1: Architecture review + implementation plan covering: * Current workflow * Integration points * DB changes * DocuSign flow * Stripe/webhooks * File storage * Risks & timeline Must have: * React * Node.js * PostgreSQL * DocuSign API * Stripe * Webhooks * Existing app integrations When applying: 1. DocuSign embedded-signing examples 2. Stripe/webhook experience