Can you please help me to enhance the below experience certificate:
EXPERIENCE CERTIFICATE
28th February, 2019
To Whomsoever It May Concern,
This is to certify that <<Full Name>> has served as a full-time employee at <<Company Name>>, for the period between <<Start Date>> to <<End Date>>.
<<Full Name>> started working in the company as a <<Starting Job>> and with his sincere efforts and excellent performance, he was promoted to the current position of <<New Job>>.
During his tenure, we found him to be sincere and hardworking, he demonstrated as a diligent and truthful employee. His interpersonal skills are outstanding, his services were found to be satisfactory and professionally excellent by his managers.
He was a productive employee we valued, and we wish him all the best in his future endeavors.
Yours sincerely,
EXPERIENCE CERTIFICATE
28th February, 2019
To Whomsoever It May Concern,
This is to certify that <<Full Name>> has served as a full-time employee at <<Company Name>>, for the period between <<Start Date>> to <<End Date>>.
<<Full Name>> started working in the company as a <<Starting Job>> and with his sincere efforts and excellent performance, he was promoted to the current position of <<New Job>>.
During his tenure, we found him to be sincere and hardworking, he demonstrated as a diligent and truthful employee. His interpersonal skills are outstanding, his services were found to be satisfactory and professionally excellent by his managers.
He was a productive employee we valued, and we wish him all the best in his future endeavors.
Yours sincerely,