Long-Term Senior Full-Stack AI Platform Engineer | Replit • Vercel • Railway • Supabase • n8n

Hello, I'm looking for a **long-term Senior Full-Stack AI Platform Engineer** to become my technical partner rather than just complete a single task. Over the past several months, I have been building multiple interconnected AI SaaS projects using Replit, GitHub, Vercel, Railway, Supabase, n8n, Claude Code, and various AI APIs. I come from a technical industrial procurement background rather than a software engineering background, so I have been learning and building simultaneously. While I've made significant progress, the projects have evolved without a consistent software development discipline, resulting in technical debt, architectural inconsistencies, deployment issues, and integration challenges. I'm not looking for someone to rewrite everything. I need a senior engineer who can first understand the existing architecture, review the repositories, identify weaknesses, establish proper engineering practices, and help stabilize and continue development. I value clean architecture, scalability, maintainability, version control, proper deployment workflows, and structured development. The ideal person should have strong experience with Next.js, React, TypeScript, Node.js, Supabase, PostgreSQL, GitHub, Replit, Vercel, Railway, n8n, Claude Code, AI integrations, APIs, webhooks, macOS Terminal, debugging, DevOps, and production deployments. Initially, I'd like to start with a technical audit of my existing projects, followed by ongoing development and architectural guidance. If we work well together, I'm looking for a long-term collaboration where you'll act as the senior technical lead for my platform's growth. If this aligns with your experience, I'd be happy to discuss the projects in more detail.