Key Management
Ong Han Poh
Group Financial Controller
Mr Ong Han Poh joined the Group in August 2021 and is responsible for the overall financial accounting, reporting as well as corporate finance matters relating to the Group. 
     Prior to joining the Group, Mr Ong was group financial controller at JEP Holdings Limited from April 2016 to August 2021, where he was responsible for the overall financial accounting, financial reporting as well as corporate finance matters. From January 2011 to March 2016, he was finance manager with Tee Yih Jia Food Manufacturing Pte Ltd, and from February 2006 to April 2010, he was assistant finance manager at MMI Industries Sdn. Bhd. Prior to joining MMI Industries Sdn. Bhd., Mr Ong was administrative and finance manager at MCL Systems Sdn. Bhd. from March 1999 to December 2005. 
     Mr Ong graduated with a diploma in management accounting from Tunku Abdul Rahman College, Malaysia in 1998 and has been a chartered management accountant with the Chartered Institute of Management Accountants since 2000. He is also an associate of the Institute of Singapore Chartered Accountants and a chartered management accountant of the Chartered Institute of Management Accountants.
Tan Wei Ying
Chief Operating Officer
Ms Tan Wei Ying is responsible for, among others, implementing customer and business development strategies and managing client relationships. Ms Tan joined the Group in September 2017 as corporate service manager and was promoted to corporate service director in July 2019. Subsequently, in September 2021, she was promoted to Chief Operating Officer of the Group. 
     Ms Tan obtained a Bachelor of Business from Nanyang Technological University in 2017. In addition to her tertiary qualification, she is also a certified professional with the Institute for Human Resource Professionals and holds a Level 4 Diploma in Leadership and Management from The City and Guilds of London Institute, and a Diploma in Environmental Services and Professional Diploma in Leadership and People Management from WSQ. Ms Tan completed the EMAS Leap Programme administered by the Environmental Management Association of Singapore in 2019 and was awarded a certificate in cleaning and disinfection for non-healthcare facilities by Republic Polytechnic in 2020.
Tan Wei Li
Group Finance Manager
Ms Tan Wei Li is responsible for, among others, preparation of management reports and performing analyses of revenue performance and growth. She assists in the preparation of annual budgets and compliance reporting matters, as well as working with external auditors to facilitate their work. Ms Tan joined the Group in January 2021 as financial, planning and analysis manager and was promoted to Group Finance Manager in September 2021. 
     Prior to joining the Group, Ms Tan was an audit assistant and, subsequently, an audit senior associate at Ernst & Young LLP from September 2018 to December 2020 where she performed statutory audits for clients in the consumer products and retail industry including listed companies operating in the Asia-Pacific region. 
     Ms Tan graduated with a Bachelor of Accountancy from the Singapore Management University in 2018.
Susan Lee
Operations Director
Ms Susan Lee is responsible for overseeing the operations of the Group’s projects. Prior to joining the Group, she was a senior manager at UEMS Solutions Pte Ltd where she was responsible for cost management and control and budget forecasts, among others. Ms Lee joined Ramky Cleantech Services Pte. Ltd. in October 2009 as head of training and development and was subsequently head of business development from April 2011, and head of operations from November 2015, a position she held until May 2019. From January 2005 to September 2009, Ms Lee was a sales manager at Sembcorp Environment Pte. Ltd.. Between August 2004 and December 2004, she was a corporate sales specialist at Canon Singapore Pte Ltd. She was a mortgage specialist with DBS Bank Limited from August 2003 to July 2004 and an assistant sales manager with Citibank Global Consumer Banking from October 2001 to July 2003. From January 2000 to September 2001, she worked at Centrepoint Properties Limited as a marketing and sales executive, and as a project executive at HSR International Realtors Pte Ltd from September 1999 to January 2000. 
     Ms Lee obtained a Diploma in Computer Studies from Ngee Ann Polytechnic in 1994, and a Bachelor of Commerce from Deakin University, Australia in December 1999. She also holds an advanced certificate in training and assessment and a Diploma in Adult and Continuing Education from WSQ which she obtained in 2011 and 2016, respectively.
Ziilia Seah
Sales and Marketing Manager
Ms Ziilia Seah joined the Group in November 2018 and is responsible for account and contract management, internal stakeholder management and business development. Prior to joining the Group, Ms Seah was an assurance senior associate with Baker Tilly Singapore from September 2017 to October 2018 where she provided assurance services including designing and implementing external audit engagement plans and assisting in MAS compliance audits. 
     She graduated from Nanyang Technological University in 2017 with a Bachelor of Accountancy with honours and obtained a Diploma in Environmental Services from WSQ in 2020. Ms Seah also holds certificates in managing inventory and cleaning, and disinfection for non-healthcare facilities awarded by WSQ and Republic Polytechnic in 2018 and 2020, respectively.