Hello There,
I am available for this job and can start work immediately.
I have excellent experience with WHMCS and I can easily update WHMCS old version to new one. I am an expert server administrator, working for last 5+ years.
My expertise : Linux, Unix, Ubuntu, CentOS, cPanel/WHM, AWS and its instances AWS S3, AWS EC2, SSL, SSH, Apache, Letsencrypt, Nginx, Network security and many.
Please share server login details, I strongly believe that I can be a real and immediate asset to your job.
Thanks and Regards