Contact person: Automate Cookie Authentication Flow Securely

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Location: Kushtia, Bangladesh

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"We are looking for an experienced engineer to help us build an automated system for generating and refreshing authentication cookies used in Google and Microsoft login flows. These cookies expire quickly, and we need a reliable way to simulate real user sessions at scale.

Responsibilities:
• Analyze how specific cookies (e.g., ACCOUNT_CHOOSER for Google sign-in) are created, their lifecycle, and renewal requirements.
• Design and implement an automated solution for programmatically generating valid cookies using real accounts (likely via browser automation).
• Implement automation using tools such as Puppeteer, Playwright, or Selenium to mimic human login behavior.
• Model and test the rate/scale at which endpoints can be hit without triggering blocks.
• Ensure secure handling of credentials, tokens, and cookies.
• Provide recommendations for scaling, IP rotation, and proxy usage to avoid detection and blocking.

Requirements:
• Strong expertise in web authentication protocols (OAuth2, OpenID Connect, SAML).
• Demonstrated experience with browser automation (Puppeteer, Playwright, Selenium, etc.).
• Familiarity with session management, cookies, tokens, and anti-bot/anti-scraping protections.
• Experience handling rate-limiting, IP reputation, and traffic shaping.
• Ability to reverse engineer and document the lifecycle of cookies and sessions.
• (Nice to have) Experience with both Google and Microsoft authentication flows.

Deliverables:
• Working proof-of-concept automation that logs in, generates the target cookies, and refreshes them on a schedule.
• Documentation on cookie lifecycle and endpoint usage limits.
• Recommendations on scaling safely without detection.

Other Details:
• This will likely lead to ongoing work. We have similar projects.
• We’re looking for an engineer who has hands-on experience, not just theoretical knowledge." (client-provided description)