Senior Full-Stack SaaS Architect & Development Team for AI-Powered Multi-Tenant Business Platform

Seeking a senior software architect or experienced development team to design and build a secure, scalable, AI-powered multi-tenant SaaS platform integrating business productivity tools, invoicing, e-signatures, document management, virtual mailrooms, and business services. 1. Attempting to contact any of our company employees through LinkedIn will result in immediate and permanent disqualification from this job. 2. We are looking for freelancers with a strong track record on Upwork, including numerous completed projects, high ratings, and substantial earnings. New freelancers with zero completed jobs will not be considered for this position. 3. Please include the exact phrase **"100% FULLY SEEN"** in your proposal to confirm that you have reviewed the entire job posting, read the attached requirements, and fully understand the scope of the job.