I have full access to a PHP code-base that I can share immediately. I already know exactly which file and function contain a hidden back door; I just need a seasoned developer to: • remove every trace of that back door cleanly, • rebuild/package the application so it runs flawlessly after the fix, and • verify the change with a quick security review and functional smoke test. You’ll receive the source archive, a short note pointing to the suspect section, and the steps I normally use to deploy. Hand back the cleaned code, a brief changelog, and confirmation that the application still behaves as expected on a standard LAMP stack.