Obfuscation and Piracy Prevention

I'm looking to protect my desktop applications from piracy and reverse engineering using code obfuscation. I have a large set of applications that need to be protected against, and would like to ensure that they are all secure. Therefore, I am specifically looking for someone who has experience in code obfuscation, encryption and digital watermarking. The successful freelancer will be able to provide a secure solution that will prevent my applications from being hacked and exploited by others. Ultimately, I am looking for someone who can protect my applications from malicious use and keep my software secure from piracy.

Application is in C# and its finished, looking for some tutoring on how to improve security and make the application unable to by deobfuscateed and/or pirated