Optimize & Debug Node.js AWS Deployment

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Job Description

I have an existing Node.js-based automation system deployed on AWS, but it is not working correctly and needs fixes, debugging, and optimization.

I am looking for an experienced Node.js developer who can work on my current codebase and improve its performance and reliability.

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Environment (IMPORTANT)
• Backend: Node.js
• Deployment: AWS (EC2 / server-based setup)
• Code is already written and deployed
• Work must be done directly on AWS environment (not locally only)

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What Needs to Be Done
• Fix issues in login system
• Debug and improve account creation flow
• Modify and correct API call sequence and logic
• Ensure API calls are triggered properly (headers, tokens, cookies, etc.)
• Improve speed, efficiency, and stability
• Fix bugs causing incorrect responses or failures
• Optimize Node.js code for better server performance

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Requirements
• Strong experience with:
• Node.js (must)
• AWS (EC2, deployment, server debugging)
• API integration (REST, authentication, cookies, tokens)
• Experience debugging existing code (not from scratch projects)
• Ability to quickly understand and modify complex logic
• Experience with automation or high-frequency API systems is a plus