Upon obtaining her diploma, she started her career with Lira Media Sdn Bhd as a Membership Ambassador, where she was responsible to promote the company’s hotel and golf club membership.
In 2000, she left Lira Media Sdn Bhd and joined CMW Industrial Supplies (principally involved in the sale of water filtration machines) as a partner. Her main responsibility was to promote water filtration machines to consumers together with Wong Chun Mun.
In 2003, she and Wong Chun Mun ceased the operations of CMW Industrial Supplies and she went on to set up a sole proprietorship by the name of Speed Business Services. She was in charge of managing the business operations of Speed Business Services which was involved in printing, designing and distribution of advertising flyers.
In 2009, Piah Yee Ling and Wong Chun Mun co-founded SBS Prints Sdn Bhd (now known as SBS Digital Holdings), refocusing their business operations to SBS Digital Holdings to support the expansion of the printing and flyer distribution business. After SBS Digital Holdings was founded, she ceased the business operations of Speed Business Services. Since co-founding SBS Digital Holdings, she assumed the role of Executive Director, a position she currently holds.
