Tinh has joined Tin Nghia since 1991. In February, 1995 Tinh assumed Chief accountant of Tin Nghia. Form 2007 until now, Tinh has been appointed as Deputy General Director in charge of Finance – Accounting – Auditing. Tinh had participated in Commercial banking administration for more than 15 years, from 2009 to 2012, he was Standing vice chairman of DaiABank. Tinh attained his Ph.D in Accounting & Finance and was invited to instruct the post-granduate students in a number of universities: Ton Duc Thang university and University of Economics HCMC.