Build AI Sales Automation – Multi-Tenant AI Document Processing Platform with n8n

We are looking for an experienced n8n automation engineer to improve and optimize an existing AI-powered document processing workflow. The project involves reviewing current workflows, improving reliability, optimizing AI document extraction, and connecting external services through APIs and webhooks. Experience with self-hosted n8n, OpenAI, PostgreSQL, REST APIs, and workflow automation is preferred. The ideal candidate should be comfortable with error handling, reusable workflows, and scalable automation architecture. Please share relevant examples of similar n8n or AI automation projects you've completed.