Yun is a registered architect with Board of Architects, Singapore, since 2005. She has a vast and varied experience in the construction industry, ranging from design, project management and supervision of site works. One of her first projects as a young architect then was recladding works at High Street Centre in 2002.

Yun and Walter met as colleagues in the architectural site team in Singapore Powers (SP) project in Labrador Park in 2023. Yun, who was helming the façade works on site together with Walter then, decided to use their combined expertise and knowledge in façade works to help building owners/managing agents maintain their building façade.