Dear Ms. Smith,
I am applying for your Electronics Engineer position for your company. I have enclosed a current copy of my resume for your review.
Briefly, I have worked for one of the leading electronics companies in the area for the past five years, in a role in which my duties were varied and significant. I was responsible for creating, designing, and producing various electronics products and systems. I did so with success.
I look to bring this success to your company. Please contact me at [email] and/or (555)-555-5555 to arrange an interview. Thank you for your time.