Hello,
I'm not a company, but IT engineer experienced in website security - I clean and secure compromised sites/hosting accounts on daily basis.
First of all, I'll check your Joomla against left backdoors and other security issues, then, I'll help you to protect your website/hosting.
I'm still new here, on freelancer.com, that's why the price is quite low: my offer is $75.
Let me know if you have any questions :)
Regards,
Adam