Deploy Existing Dashboard App Behind Secure Login Portal

Full-stack developer needed to deploy an existing interactive dashboard application (client-side HTML/CSS/JavaScript with charts and calculators; source code provided) behind a secure two-user login portal on our business domain. Fixed price: $1,500, paid in three milestones — Milestone 1 (30%, $450): working authentication in staging with sign-in, sessions, and password reset for two accounts. Milestone 2 (50%, $750): full application deployed behind login on our domain, verified functioning identically to the original. Milestone 3 (20%, $300): security hardening (HTTPS, hashed credentials), deployment documentation, and user-management instructions. In your proposal, describe your authentication approach and confirm comfort with the milestone structure.