Greetings, Sir/Mam

I'm writing to express my interest in the Techno-Commercial Position (Telecom). I believe that my academic background, as well as my strong desire to apply my engineering fundamentals to a telecom company, qualify me for this role. I am confident that my 17 years of expertise will enable me to contribute immediately to your company's technological demands.

I am currently employed as a service manager at Intellicon Pvt Ltd, where I supervise a team of service engineers and Presale executives. I have excellent academic and technological credentials. I've attached my résumé for your review. I am excited about the prospect of working for your organization, and I would be delighted to speak with you in the future about how I might match your requirements.
Thank you for your time and attention.