Hi Sir/Madam,  My wife was fired recently and I am writing my application letter, would it be possible you can correct one of my paragraph below?

During my employment in ABCand DEF, I was in charge of all Human Resources and general administrative duties.  I have also provided secretarial and personal support to Managing Director and senior level managers.  My 3 years experience in investment company has allowed me to know some aspect of the fields such as SFC reporting, licensing requirement and procedure.