A cover letter is a short (200-250 words) document that accompanies your CV, with a quite rigid structure and has the layout of a letter. Its goal is to introduce the CV, to bring to attention aspects of your activity that can help your application and are not listed or not presented in the proper light in the CV. In short, its goal is to answer the recruiter's question: "Why should I hire this person?"
Here you need to put the name and address of person you are addressing it to. Address your letter to a specific person, ideally to the person who will interview you. In case you don’t know the exact name of the person interviewing you, it is acceptable to address the “Personnel Manager” or the title listed in the job announcement.
It is important for you to write persuasive opening paragraphs. You can capture the reader’s attention best by demonstrating your knowledge of the job or company. If you are writing to find out if a job is available, you might mention a product or project on which you are interested in working. In either case, you should work to tie your qualifications in with the job you are seeking. Your first paragraph should:
It isn’t necessary to summarize your resume in the cover letter. Highlight your strongest qualifications for the position for which you are applying. Demonstrate how these qualifications will benefit the employer.
Detailing Your Experience
You should not simply restate descriptions from your resume in discussing specific experiences. You should help the employer to picture you working on the job. Show (don’t tell) employers your qualifications and include specific, credible examples of your qualifications for the position. Use numbers, names of equipment you've used, or feature of a project that may apply to the job you want.
Concluding Your Letter
Conclude your cover letter by asking for a personal interview. Be flexible regarding a date and time for the interview. Include a thank you. It is a good idea to include a phone number you will always have access to or where someone will always know how to reach you.
Sending your Cover Letter with resume
If you send them as an e-mail attachement, give the files meaningful names, for example "Ashot-Gabrielyan-CoverLetter".