Dear Madam, Sir,
After carefully reading your job posting, I am certain I can do it perfectly. I have a Master's degree in Information Technology and a very long experience in web development, blogging, web design, academic writing and marketing.
My freelancer.com profile is new, however, I am certain that you will be very pleased with my professional work, I am a native Arabic and French speaker and I master English fluently.
Thank you for your consideration, Sincerely.