I am in the process of seeking a new position as a software architect and am hoping that you will provide a reference for me. Having worked with you for many years, I believe that you can provide potential employers with information about my skills that will enhance my chances of getting the job. I have enclosed an updated copy of my resume. Please let me know if there is additional information that you would need to act as a reference on my behalf. Thank you very much for taking the time to consider my request.