Contact person: Business Client

Phone:Show

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Location: Barnet, United Kingdom

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need reliable Google OAuth 2.0 sign-in added to my web application so users can authenticate with a single Google click. After login, the app must seamlessly read from and write to structured data that lives in cloud storage—ideally Google Drive / Sheets, though I’m open to the Microsoft 365 equivalents if you can make the hand-off just as smooth.

Here is what I’m expecting:
• Secure, standards-compliant OAuth 2.0 flow (consent screen, token refresh, revocation handling).
• A lightweight backend connector that creates the necessary Drive folder (or OneDrive) and a spreadsheet-style table to store user-specific records.
• Clean, well-commented code plus a quick setup guide so I can plug it into whichever stack the project ultimately uses.

If you’ve wired up Google authentication before and can demonstrate read/write calls to Drive or Sheets—bonus points if you can show the same pattern for Microsoft—let’s talk." (client-provided description)