Contact person: Business Client

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Location: Salem, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I have a working single-user HTML/CSS/JavaScript application that currently saves everything to LocalStorage. The front-end, calculations, and overall workflow should remain essentially unchanged; what I need is a solid Google Cloud back-end that turns this into a secure, multi-user, online product.

Scope of work
• Migrate the existing LocalStorage schema to a managed database on Google Cloud—Firestore or another service you recommend—while keeping the data structure intact.
• Implement email-and-password authentication, complete with session handling and password-reset flow.
• Add multi-tenant logic so each signed-in user sees only their own records (plus any shared reference data).
• Enable real-time or near real-time syncing so edits made by one user become visible to others within seconds.
• Host the static front-end on the Google Cloud option that best fits your architecture (Cloud Storage, Cloud Run, App Engine, etc.).
• Supply a migration tool or script to import existing LocalStorage data into the new cloud database.

Acceptance criteria
• Reliable login, logout, and password-reset functionality.
• Cross-user updates visible in ≤5 seconds without manual refresh.
• All calculations deliver identical results to the current offline version.
• Complete source code in a Git repo plus a README covering environment variables and deployment steps.
• Brief hand-off call or video walkthrough on completion.

Put together a detailed project proposal that explains your chosen Google Cloud services, security model, and milestone breakdown; this proposal will be the main factor in my selection. Links to past, similar work are welcome, but the clarity of your plan matters most." (client-provided description)