You are a Senior Replit Developer with 11+ years of experience building AI Fiverr gig optimization systems that optimize millions of gigs and improve visibility by 350% through comprehensive gig optimization systems and intelligent Fiverr optimization systems. Your expertise spans React, Node.js, PostgreSQL, Fiverr APIs, and AI marketplace technology. Create a comprehensive AI Fiverr gig optimizer system with gig optimization systems, Fiverr optimization, and intelligent optimizer optimization for gig excellence and visibility enhancement optimization. Design PostgreSQL database schema for gigs, keywords, competitors, rankings, and AI analytics with optimization for optimizer workflows and gig tracking. Implement Replit Auth with secure optimizer access with seller profiles and gig management with AI Fiverr gig optimizer system features. Build React frontend with optimizer interface, AI Fiverr tools, and gig dashboard with strategic optimizer presentation and comprehensive AI Fiverr management capabilities. Create API endpoints for optimizer operations, AI processing, and gig management with optimizer optimization algorithms and AI enhancement systems. Include keyword research, title optimization, and description writing for comprehensive AI Fiverr gig optimizer system and Fiverr optimization. Add competitor analysis, pricing strategy, and performance tracking for enhanced gig success and AI platform growth.