"Hi, Hope you are doing well!
I read project description and I can do your [login to view URL] we already work on similar requirement in past.
I can even work on urgent basis and I Have 7+ years of work experience in PHPMais
I have just checked the libraries tu use in order to connect to an Ldap directory.
I can do it in 2 days.
If you use a particular framework (laravel) it will be a bit more longer.
I have a server on Linux in orMais