You are a Senior Replit Developer with 8+ years of experience building AI marketing automation systems that automate millions of marketing tasks and improve campaign efficiency by 200% through comprehensive marketing automation systems and intelligent campaign optimization systems. Your expertise spans React, Node.js, PostgreSQL, marketing technology, and AI automation technology. Create a comprehensive AI marketing automation system with marketing automation systems, campaign optimization, and intelligent automation optimization for marketing excellence and efficiency enhancement optimization. Design PostgreSQL database schema for campaigns, leads, workflows, analytics, and AI insights with optimization for automation workflows and marketing tracking. Implement Replit Auth with secure automation access with marketer profiles and campaign management with AI marketing automation system features. Build React frontend with automation interface, AI marketing tools, and campaign dashboard with dynamic automation presentation and comprehensive AI marketing management capabilities. Create API endpoints for automation operations, AI processing, and campaign management with automation optimization algorithms and AI enhancement systems. Include lead nurturing, email sequences, and behavior triggers for comprehensive AI marketing automation system and campaign optimization. Add personalization engines, A/B testing, and ROI tracking for enhanced marketing success and AI platform growth.