Secondly, even though I never have an experience in demand planner but before I went to study master degree I had an experience worked as assistant purchasing officer position in commercial department in Tesco Thailand for one year. I have learned to work as team, solve the unexpected situations, negotiated with supplier, build relationship with vendors as well as work close to demand planner. This experience allows me to develop and improve my skill as well as understand more about demand planner. This all experiences could an advantage me to overcome the obstacle and challenge to be a demand planner in Thailand’s international company.