To Whom it May Concern:
It is a great pleasure for me to provide a letter of recommendation for <Full Name>.
I enjoyed collaborating with <First name>. He works hard at his creative skills and
brings benefits to the organization. Despite he occupied a position of engineer, I
felt confident enough to let <First name> deal with our clients.
I highly recommend <First name> for employment. I have no doubt that he should
make a great asset to any organization.
Kind Regards,
<name>
<position in company>
<company name>