a letter to a professor I am very happy to receive your email. I have contacted my references, and you would get their letters of recommendation very soon. As one of my objectives for the career development, I am looking for a position focusing on **, which is a powerful technology in the field of computer science. The position from your group is definitely a good opportunity for me, so it deserves to try. Since my current boss will have evaluation for the tenure position in the coming year, I believe his achievements in the past years are very impressive, but nobody could guarantee the final decision, so this is the another reason that I need to be prepared to find other positions. It is true that one year for a postdoc is a bit short, but it is dependent on the type of projects involved in and financial conditions. In fact, I don't want to move so often. However, I always try my best to work on the projects at each stay, and try to publish results as much as I can. Sincerely YaD