以下是一份美国签证在职证明的英文版：

TO WHOM IT MAY CONCERN:

This letter is to confirm that [Employee Name] is currently employed as a [Job Title] at [Company Name] located at [Company Address]. [He/She] has been employed with our company since [Date of Hire].

As a valued member of our team, [Employee Name] has consistently demonstrated a strong work ethic and a dedication to [his/her] job responsibilities. [He/She] has shown exceptional skills in [list specific job duties and responsibilities], and has contributed significantly to the success of our company.

As part of [his/her] job responsibilities, [Employee Name] is required to travel to the United States on [Date of Travel] for business purposes. We fully support [his/her] travel plans and confirm that [he/she] will return to [his/her] position at [Company Name] following the completion of [his/her] business trip.

Please do not hesitate to contact us if you require any further information regarding [Employee Name]’s employment with our company.

Sincerely,

[Your Name]

[Your Title]

[Company Name]

[Company Address]

[Contact Information]

This letter is provided as proof of employment for the purposes of obtaining a US visa. Please feel free to contact us if you require any further information or clarification.