Dear Sir / Madame,
I wanted to take the time to introduce myself as well as provide you a brief summary of who I am and my background.
My name is Randall Martinez, Senior Cisco Network Engineer, specializing in converged data networks.
I currently reside in the US and have worked on many network related projects, primarily in network planning, network design, implementation, and optimization, as well as security.
With over 7+ years of hands on experience within enterprise class networking, I believe I would be a great asset to your company with this project.