Our Team

Mr Rick Thomas

Principle Consultant/ Director

Rick spent his student years studying Horticulture at Kings Park and Botanic Gardens in Perth [Australia] before moving to the UK where he undertook Tree Surgery/Arborist studies at Merrist Wood College. Rick was a founding director and manager of a leading and highly credentialed Arboricultural business in Australia for 18 years specializing in large scale tree transplanting operations and Arboricultural Consultancy Services. Rick brings to the company over 35 years of Arboricultural experience, knowledge and passion. He is dedicated to assisting the development of the ‘tree care industry’ in a long lasting Arbor ‘Culture’ in Singapore and the Asia-Pacific region.

Ricks current local responsibilities in his role as Principal Consultant [or by his own-self obligation] include:

  • Principle Consultant/ Director: ArborCulture Pte Ltd
  • Committee Member: Ngee Ann Polytechnic – Landscape Design & Horticultural Advisory Committee [LDHAC]
  • Professional Member: International Society of Arboriculture (ISA)
  • Committee Member: International Society of Arboriculture (ISA) Certifications Test Committee
  • Corporate Member: Landscape Industries Association Singapore (LIAS)
Mr Martin Tay

Principle Consultant / Director

Graduated from Singapore Polytechnic with a Diploma in Information Technology. His experience and familiarity with computer systems, applications and programs assist the company in meeting IT demands through implementation of modern technological equipment & programs into the new age Arboriculture industry. Martin is an ISA Certified Arborist with 18 years of experience in land-development planning/ tree assessment & strategizing conservation and is dedicated to advancing and promoting the modern form of Arboriculture industry in Singapore and the region to a higher level. He is WSQ ACTA qualified as well.

  • Council Member: Singapore Arboriculture Society [SAS]
  • Committee Member: Asia Pacific Tree Climbing Championship [APTCC]
Mr Rajesh Singh Gill

Senior Consultant

Rajesh joined our organization in early 2009 after 20 successful years operating as a German Speaking Tourist Guide in Singapore and Malaysia. Through his early career he has developed a keen eye for natural and urbanized flora and fauna by through translating the self-learnt and researched material to his clients and peers. His developing and focused passion in trees has resulted in a wealth of experience in Arboriculture spanning over 12 years .Being one of the first WSQ Advanced Certificate Landscape (Arboriculture) qualified persons in Singapore, he brings to the company his sharp eye for detail, as well as a sophisticated comprehension of Tree evaluations and feasibility. He is an ISA certified arborist and qualified Tree Risk Assessor with an abundance of experience. He is also a certified coach of landscape leaders entering the industry.

  • Council member: Singapore Arboriculture Society
Ms Shirley Lim

Senior Consultant

Graduated from Universiti Sains Malaysia (USM) with a Bachelor Degree (Honours) in Animal Biology, 2006. Shirley joined our team in 2016. Prior to this, she was an Arborist in Wildlife Reserves Singapore and the National Parks Board. She is an ISA Certified Arborist and Tree Risk Assessment Qualified with 10 years’ experience in trees management in Parks and Streetscapes.

Mr Ethan Lua Sien Yang

Consultant / Landscape Architect

Ethan joined our organization in early 2017 having graduated from the University of Melbourne with Bachelor in Environments, majoring in Landscape Architecture. He has a diploma in Landscape Architecture from Singapore Polytechnic and has been in the landscape industry through internship and work in landscape consultant firms. Having been involved in commercial and residential projects both locally and overseas, he has flair and experience in landscape graphic design, a sound knowledge of design development processes and is an ISA-certified Arborist with 2 years of experience.

Mr Rushan bin Abdul Rahman

Senior Ecologist

Rushan is an ecologist with a wide range of skills that are applicable to suit development, research, and conservation projects. He brings with him a rich experience of research, particularly in sea turtle biology and ecology in countries including Malaysia, Maldives, and Australia. His work in Singapore is primarily focused on biodiversity impact assessments (BIAs) as well as biodiversity components of environmental management and monitoring programs (EMMPs), where he closely follows local guidelines as well as internationally recognized methods for surveying biodiversity. He strongly believes in the principles of Biodiversity Sensitive Urban Design (BSUD), where development goals and conservation objectives can be achieved in a holistic and harmonious manner. The common thread through all his work is an unwavering commitment to strong and replicable methods as well as peer-reviewed and evidence-based science, using tools in ecological modelling and spatial ecology to find unique solutions in a rapidly-developing City in Nature.

Rushan is currently a MAC3 Scholar at Conservation International Singapore, pursuing a PhD in sea turtle conservation in Southeast Asia through James Cook University.

Ms Jong Ying Wei


Ying Wei joined our organization in mid-2019 after completing Masters of Forestry program at Duke University. Prior to this, she has experience as a Streetscape Manager in National Parks Board for 5 years, and volunteered in various biodiversity field surveys. She is an ISA-certified arborist with skills and experience in plant identification, flora surveys, 2 nd and 3 rd level tree risk assessment, geographic information systems (GIS), AutoCAD drawing, R programming and forest carbon quantification.

Ms Ma Sui Chan


Sui Chan joined our organisation in mid-2021. She graduated from the University of Putra-Malaysia in 2007 with full honors and since then has close to more than 15 years hands-on experience in the coordination of Arboriculture and Horticulture management works in the industry. Through her extensive work portfolio with notable projects in South East Asia, she has developed a strong passion for Arboricultural applications in an urban settings as well as a well-honed eye for plant taxonomy.

Mr Dominic Ng


Dominic studied Conservation and Wildlife Biology in Murdoch University in Perth, Australia, where he enjoyed the fieldwork components of all his units. Prior to joining the company, he participated in a traineeship program in Nanyang Technological University. He is proficient in QGIS and has some basic knowledge of working with R for data analysis.