Senior AI SaaS Developer for Document Intelligence & Automation

We are looking for an experienced Senior Full Stack AI SaaS Engineer to help build, improve, and maintain production-ready SaaS applications with strong AI capabilities. This role is ideal for someone who can work across frontend, backend, databases, AI integrations, cloud deployment, and product workflows. We are looking for a developer who does not just write code, but understands business requirements, reviews existing systems carefully, identifies what needs improvement, and delivers clean, scalable solutions without unnecessary rewrites. You should be comfortable working on both new product development and existing codebases. The right person will be able to take ownership of features, fix technical issues, improve system stability, and help move the product toward a reliable production-ready state. Scope of Work: Build and improve SaaS platforms, customer portals, admin dashboards, and internal business tools Develop clean frontend interfaces using Next.js, React, TypeScript, Tailwind, and modern UI patterns Build scalable backend APIs, database workflows, authentication, RBAC, and role-based permissions Work on billing flows, file uploads, email automation, document workflows, and third-party API integrations Improve existing codebases by reviewing architecture, fixing bugs, optimizing queries, and removing technical bottlenecks Integrate AI-powered features such as chatbots, AI assistants, workflow automation, document processing, intelligent search, and structured data extraction Work with tools and services such as OpenAI, Claude, LangChain, LangGraph, vector databases, embeddings, PostgreSQL, Supabase, Prisma, Stripe, and REST APIs Handle deployment, testing, monitoring, and cloud setup using AWS, Vercel, Render, Docker, or similar platforms Maintain production stability, improve performance, and provide clear daily progress updates Requirements: Proven experience building real SaaS platforms, dashboards, backend systems, and AI-powered product features Strong experience with Next.js, React, TypeScript, Python/FastAPI, NestJS, PostgreSQL, Supabase, Prisma, and REST APIs Experience with authentication, authorization, RBAC, multi-user workflows, and secure data handling Hands-on experience integrating AI features using OpenAI, Claude, document processing, chatbots, automation workflows, or intelligent data extraction Ability to understand an existing codebase before making changes Strong debugging skills and the ability to fix backend, frontend, database, and API issues independently Good understanding of scalable architecture, clean code, performance optimization, and production deployment Clear communication and ability to provide regular progress updates Please include: Examples of SaaS platforms, dashboards, admin portals, AI tools, or backend systems you have built Your experience with Next.js, Python/FastAPI, PostgreSQL, Supabase, Prisma, and TypeScript Any AI-related work involving Claude, OpenAI, chatbots, document processing, workflow automation, or structured data extraction Your approach to reviewing an existing codebase, identifying issues, and shipping clean production updates Your availability and earliest start date Infrastructure: The application may be hosted on AWS, Vercel, Render, Docker-based infrastructure, or client-provided cloud servers. You should be comfortable taking ownership of setup, deployment, testing, monitoring, and ongoing technical maintenance. This is best suited for someone senior, reliable, product-minded, and comfortable working long-term on real SaaS products that need clean engineering, practical AI features, and stable production performance.