Expert Python Developer Needed to Debug and Fix a Direct/API Automation Script

I have an existing Python automation project that operates entirely in direct/API mode. The project contains two separate scripts: * main.py – Handles account registration. * prepare.py – Generates app passwords for accounts that were successfully registered. These two workflows must remain completely separate. The script was designed for high-speed parallel execution and bulk account creation. It runs multiple concurrent workers simultaneously, and this behavior must remain exactly the same. I am not looking for a browser-only or hybrid replacement. The objective is to restore the original direct/API workflow while preserving the existing architecture, commands, interface, workflow, speed, concurrency, and output formats. This is an urgent project, so I am looking for someone who is available to start immediately. ⸻ Current Issues The project currently has the following issues: * Newly created accounts are being blocked immediately after registration. * Registration works when creating only a few accounts (for example 1–4), but higher concurrency produces many failures. * The registration process has become significantly slower. * I need to identify exactly where the failures originate. * I need to understand why performance dropped and restore it as close as possible to the original version. * I need the actual root cause fixed—not temporary workarounds. ⸻ Required Result The final solution must: * Restore the original direct/API workflow. * Keep main.py responsible only for account registration. * Keep prepare.py responsible only for generating app passwords. * Preserve the current architecture. * Preserve the existing commands and interface. * Preserve high-speed parallel execution and bulk processing. * Restore the previous performance as closely as possible. * Keep all existing output files and formats fully compatible. ⸻ Required Skills * Python * Reverse Engineering * HTTP/API Debugging * Authentication Flows * Sessions, Cookies, Headers, Redirects & Tokens * Browser/TLS Fingerprinting * Proxy Management * Concurrent & Multithreaded Python * Performance Optimization * Production Debugging * Experience with RiskIdent or similar enterprise anti-bot/risk detection systems ⸻ Testing Requirements Please reproduce the issue, debug it, and validate your solution locally before sending it to me. I do not want to receive multiple experimental versions for me to test. I expect the solution to be fully validated on your side before delivery. ⸻ Important Please mention your experience with RiskIdent (or similar enterprise anti-bot/risk detection systems) in your proposal. This is not a trial-and-error project. I have already hired a developer who spent more than a week sending AI-generated patches and asking me to test every version without delivering a working solution. Please do not apply if you plan to learn the project during the contract, rely mainly on AI-generated changes, or expect me to act as your QA tester. I am looking for someone who can independently analyze the existing code, identify the root cause, implement the correct fix, test it thoroughly, and deliver a production-ready solution. ⸻ Proposal Requirements Please include: * Similar projects you have completed. * Your experience with RiskIdent or similar anti-bot systems. * How you would approach debugging this type of issue.