Penetration Testing

I need someone to run a penetration testing on my client's server and give me findings. It is a linux based VPS which host two wordpress and few nodejs based websites.

Your job will be:
1. Run penetration testing and try to break security
2. Recommend security updated and changes to make server + websites more secure
3. apply any required security updates or modifications on server if needed as well

Thank can be a regular base work (not permanent but as per need occasionally for different projects )

Please let me know cost and timeline you need for this.

Best Regards,
Kamran