Clients we worked with

Consultancy & Research

About the Management

Our Leadership

Our leadership team upholds our mission, core values, develop a diverse & inclusive workforce, and deliver sustainable value to our clients. Our diverse leadership team is made up of highly experienced and talented professionals who are passionate about the business.

ESC’s organisational structure is built upon our strong culture of integrated teamwork and collaboration, and this is reflected in our “1-Enterprise” approach in leading and managing our business.

Our Executive Leadership is responsible for setting and implementing the overall strategy of the enterprise and works jointly with our Senior Management Team to deliver our clients’ projects seamlessly across our practice areas and our geographies.

Leadership Team Members

Executive Leadership

Andrew Young

Group CEO

About Andrew:

Founder and Group CEO of ESC, Andrew has worked within the Asian environmental industry since 1994. 

He has gained extensive experience as an environmental specialist within the industry, government and consulting organisations. Andrew’s broad expertise covers solid waste management, planning and impact assessments, air quality management, due diligence and compliance assessments, where Andrew has advised on EHS risks for the acquisition and divestiture of global businesses.

With experience from project inception, development and planning through operations, Andrew brings a wealth of knowledge and practical insights to all his consulting projects.

Geographically, Andrew has advised on EHS risks, liabilities and compliance for government and private sector clients in Singapore, Malaysia, Thailand, Indonesia, Vietnam, Philippines, Taiwan, India, China, Australia, New Zealand, UK and Germany. 

Alexi Bhanja

Group COO

About Alexi:

Alexi is a Registered Professional Engineer (Environment), a Chartered Environmentalist, a Chartered Water and Environmental Manager, a Chartered Resource and Waste Manager, an Accredited Monitoring Professional and a Qualified Environmental Professional with 30+ years of consultancy experience. He has been based in Hong Kong since 1992 and has worked on projects in North Asia, Southeast Asia, South Asia and the Middle East and Europe.

Alexi specialises in environmental assessment; sustainable development; tourism developments; waste management; and environmental monitoring and audit – he has been involved in more than 450 such projects to date. Alexi has managed and coordinated inputs from technical teams to develop robust environmental and sustainable solutions for clients, particularly at the early stages of project planning, and has worked with international master planners and major developers to bring sustainable solutions to numerous projects in the region.

Frank Ganendran

Senior Advisor

About Frank:

Frank has 36 years of experience working in Australia and the Asia-Pacific Region within the environmental and engineering consulting and professional services industry. He has been in senior executive leadership roles for the past 23 years mainly for large international firms.

In 2007, he established and grew a successful Australian-based environmental consulting and advisory practice (E3 Consulting Australia) which was eventually acquired by CDM Smith Inc. in 2011.

His recent role was as the Group Manager and Managing Director of CDM Smith Inc.’s Asia-Pacific region, in charge of approximately 960 staff looking after design, construction, engineering and environmental projects across private and public sector markets as well as for the multilateral lending agencies. He has a proven record of strong leadership, strategy development and implementation, training and developing executive managers, and delivering results. His valuable understanding of the intricacies of combined Asian and Western modalities of business allows him to lead, communicate and be trusted across cultural boundaries effectively and successfully.

Frank has assisted and mentored CEOs, boards and senior executives in strategic development, effective change and leadership, delivering strategic goals and business development. 

Sector Leaders

Jessie Nguyen

Arjen van Schaijk

Industrial, Infrastructure & Development

About Arjen:

Arjen has 25 years of professional experience working as a consultant in the environmental industry. He has held Senior Management positions with technical, operational, and financial accountability since 2005 and has on-the-ground project management experience in most Asia/Pacific countries, in Africa and Europe.

Arjen’s broad expertise covers site investigation, human health risk assessment and remediation, due diligence and compliance assessments, solid waste management, impact assessments and planning and air quality management. With his brought experience from project inception, development and planning through to operations working across countries and cultures, Arjen brings a wealth of knowledge and practical insights to all his consulting projects.

Over the past 10 years, Arjen has been focused on directing projects and growing and mentoring teams for large-scale upstream and downstream oil & gas (O&G) investigation and remediation programs and chemical and manufacturing sector projects in China, South Africa, and Indonesia. Besides, he has been an account manager responsible for client management, business development and operational management with P&L responsibilities.

Arjen has led several multi–year site investigation and remediation programs and numerous complex scientific, technical, and environmental due diligence programmes, including site characterization, remediation options and costing analysis and remediation action plans.

Geographically Arjen has advised on EHS risks, liabilities, and compliance mainly for multinationals in Singapore, Indonesia, South Africa, China, Taiwan, The Philippines, Malaysia, Thailand, Brunei, Japan and The Netherlands.

Nigel Landon

International Development Agencies

About Nigel:

Nigel has twenty years of experience in International Development projects as a strategic manager and technical specialist. He is also the Technical Principal for Waste Management services, having worked in the water agriculture and environmental sector since 1995 first as an irrigation engineer and later as a solid waste management specialist. Nigel has extensive experience working on environmental projects both in Indonesia and internationally. Having served in both the private sector, for large international agriculture, environment and development consultants, and for the Donor sector with the World Bank, KfW, ADB and UNDP, Nigel has experience managing projects from both consultant and the client’s side. This gives a unique advantage to ensure the Client is fully understood and the needs of the project are appropriately addressed. He has technical expertise focused on water resources planning and management, Irrigation engineering, agricultural planning and development, solid waste management, Renewable Energy, Climate Change, environmental and social impact assessments, EHS, rural development, institutional capacity building, livelihoods development, post-disaster early recovery planning and management. 

Nigel has managed, and was Team Leader on, a number of large projects in developing countries, situated in post-disaster and post-conflict environments, including TRWMP, ETESP and NSIASP in Aceh, Indonesia, and the ELWDP Command Area Development Project in Eritrea. He has proven himself to be adept in managing multidisciplinary teams, including international consultants, community facilitators, engineers, administrative staff and other support staff, in difficult environments. Through extensive experience in managing projects with complex and widely diverse development activities, Nigel has considerable knowledge of project planning, financial management, procurement, monitoring and evaluation. Geographically, Nigel has worked on a diverse range of projects in the Middle East, Africa, Eastern Europe, and Asia including Pakistan, Libya, Kosovo, Albania, Eritrea, and for more than 12 years in Indonesia. 

Jessie Nguyen

Eeda Wallbank

Financial Services and Energy & Utilities

About Eeda:

Eeda has 14 years of professional experience. She has diverse industry experiences supporting a wide range of commercial clients in Project Management, Environmental Due Diligence, ASTM International Standard Environmental Site Assessment Phase I and II, Remedial Investigation and Response, and Environmental Health & SafetyCompliance in Singapore, the United States, Malaysia, Indonesia, Vietnam, South Korea, Japan, Thailand, the Philippines, India and Bangladesh.

She has led or supported numerous due diligence and environmental investigation/response activities in accordance with ASTM International standards, Country-specific regulatory requirements, and globally accepted best management practices for a wide range of built assets including commercial manufacturing facilities, wastewater treatment plants, underground storage tank farms, landfills, railroad/railyards, shipping yards, active construction sites, U.S. military munitions response sites, and U.S. CERCLA Superfund sites.

Her experience spans sectors including waste management, major integrated oil and gas companies, pharmaceuticals, infrastructure, manufacturing, construction, automotive, freight rail, utilities, telecoms, and government, including the U.S. Department of Defense and the U.S. Department of Energy.

Country Managers

David Cham

Country Manager – Singapore

About David:

David Cham has over 17 years of experience in environmental, health and safety (EHS) consulting. David has a strong track record in EHS assessments including soil, groundwater, water, wastewater, air quality, industrial hygiene, noise, vibration and air quality; EHS compliance; due diligence assessment and sustainability reporting. In his current role, David is responsible for the day-to-day management of ESC’s Singapore business and spearhead the development and growth of the office.

Prior to joining ESC, David has held several senior leadership position including Environmental and Operations manager at an environmental testing laboratory, EHS Manager for Asia Pacific (including Australia, India and Japan) for a datacenter company, EHS Manager for South East Asia for a networking company. He was involved in numerous projects including site investigation and baseline studies; environmental impact assessments; risk assessments; decommissioning, demolition and remediation; across the various disciplines with overall responsibility for the technical and commercial aspects of the projects. He has managed and worked on projects in Singapore and Asia Pacific region including China, Hong Kong, Indonesia, India, Japan, Korea, Malaysia, the Philippines, Sri Lanka, Taiwan, Thailand, Vietnam and Australia.

Meiti Kramadibrata

Country Manager – Indonesia

About Meiti:

Meiti Kramadibrata is an experienced management professional in the engineering and international development consulting industry. She is currently the Team Leader (international) for the Consulting Services for Pre-Feasibility Studies in Urban Water & Wastewater Management, Solid Waste Management and Transport under Green Infrastructure Development, a German-funded grant program.

During her fifteen years of career, she has been in various roles including, Regional Projects Manager for Cardno (Australian engineering consultancy) responsible for overseeing the implementation of projects in South East Asia and Pacific countries and also overseeing Business Development activities in the region. In her last role with Cardno, Meiti oversaw the delivery of more than AUD 21 million projects in Papua New Guinea and the Pacific region.

Prior to joining Cardno, Meiti worked for Black & Veatch in Singapore. She was involved in construction administration, drainage design and hydraulic design of wastewater treatment plant. Before joining Black & Veatch, Meiti worked for Halcrow, UK in the wastewater division. During her tenure at Halcrow, she was seconded to Thames Water UK. Her experience in the UK exposed her to works in sewer and water main designs, survey technologies, construction supervision and management of sub-consultants.

Meiti has administered contracts under Australian Aid, Asian Development Bank (ADB) standard contracts and Singapore’s Public Sector Standard Conditions of Contract. She is also experienced in design and project management under UK Thames Water AMP4 Framework Contract.

Jessie Nguyen

Khoo Boon Keat

Country Manager – Malaysia

About Boon Keat:

Boon Keat has over 30 years of experience in environmental management in the construction of large infrastructure projects, including soil erosion control, river/water pollution control, noise level control, waste management, social and stakeholder planning and engagements.

He is a certified Sustainable INFRASTAR facilitator and has helped large infrastructure projects earn a 5-star rating. He has worked on Environmental Impact Assessments, Environmental Audits, and Feasibility Studies for projects all over Malaysia, including the railway, major roads and highways, dam, reclamation, coastal rehabilitation, bridge, marine, drainage, water and sewage treatment plant, township, and tunnel. He was involved in important projects like the KVMRT Putrajaya Line, KLIA 2, the Second Penang Bridge, the East Coast Rail Link, Teluk Chempedak, and the Pulau Tioman Beach Rehabilitation.

His training as a Civil Engineer gives him superior insights into construction site management and he can formulate practical, cost-effective solutions to address a wide range of environmental challenges.

Alexi Bhanja

Alexi Bhanja

Country Manager – Hong Kong

About Alexi:

Alexi is a Registered Professional Engineer (Environment), a Chartered Environmentalist, a Chartered Water and Environmental Manager, a Chartered Resource and Waste Manager, an Accredited Monitoring Professional and a Qualified Environmental Professional with 30+ years of consultancy experience. He has been based in Hong Kong since 1992 and has worked on projects in North Asia, Southeast Asia, South Asia and the Middle East and Europe.

Alexi specialises in environmental assessment; sustainable development; tourism developments; waste management; and environmental monitoring and audit – he has been involved in more than 450 such projects to date. Alexi has managed and coordinated inputs from technical teams to develop robust environmental and sustainable solutions for clients, particularly at the early stages of project planning, and has worked with international master planners and major developers to bring sustainable solutions to numerous projects in the region.

Jessie Nguyen

Jessie Nguyen

Country Manager – Vietnam

About Jessie:

Jessie is a Project Management Professional (PMP) registered with PMI and has more than 17 years’ experience in carrying out environmental impact assessment, environmental engineering & management and civil engineering, including road and infrastructure or utilities projects. 

Her experience varies from broad level studies and master planning to detailed engineering and construction; including environmental impact assessment (EIA), environmental monitoring & management plan (EMMP), strategic environmental assessment (SEA), wastewater treatment, solid and hazardous waste engineering and management, waste recycling, Occupational Environmental, Health & Safety (OEHS), landfill design, air and noise pollution control, risk assessment, environmental planning and management, water resources studies, eco/green and sustainability features for industrial parks and resorts, and sustainable development. 

She has successfully delivered several gold-plated EIA and EMMP for floating solar panel PVs projects in Singapore and in the region, as well as ADB and WB’s donor projects in the region to comply with Equator Principles, IFC Performance Standards and ADB Safeguard Policy Statement. 

Jessie also has hands-on experience in project management for infrastructure detailed design and construction projects including road development, water pipelines, drains, sewers, general civil engineering, as well as landfill etc in Singapore. Geographically, she is familiar with the environmental laws and regulations in Singapore, Malaysia, Indonesia, Vietnam, Oman, Qatar, India, China, South America and more.

Technical Principals

Gok Hui Tan

Tan Giok Hui

Environmental & Social 

About Gok Hui:

Gok Hui has over 20 years of experience in managing a variety of environmental projects such as environmental impact assessments, environmental site assessments, environmental permitting, environmental management and monitoring, contaminated site investigation, human health risk assessment, and environmental due diligence involving fieldwork, risk assessment, client and contractor liaison, report preparation, project management, and team coordination.  

 In addition, she was involved in various environmental-related projects in offshore exploration, municipal solid waste facilities, water supply dams, drainage and irrigation dams, coastal reclamations, mixed developments, industrial estates, power plants, infrastructure developments, resort and recreational developments, and airports.  

Stephen Skalecki

Stephen Skalecki

Sustainability & Climate Change 

About Stephen:

Stephen Skalecki, Technical Principal of Sustainability and Climate Change, has over 12 years of experience in environmental, ESG, and sustainability consulting. As a Chartered Environmentalist, Stephen is a proven leader in advancing sustainability practices and a strategic thinker skilled in developing and executing sustainability frameworks that enhance organizational reputation and align with global sustainability trends.

Stephen joined ESC in 2024 from MAPP, a UK-based consultancy where he worked as Associate Director of ESG. Prior to that, he held the position of Group Environmental Manager at Keltbray, leading Keltbray’s environmental management team, integrating sustainability into core business functions, and strategizing Keltbray’s approach to embedding sustainability and circularity in project life cycles. Stephen spent 8 years at Costain as a Senior Sustainability and Environmental Manager. He directed Costain’s sustainability initiatives across varied infrastructure projects, managing multi-disciplinary teams to drive environmental compliance and deliver sustainability results.

Nigel Landon

Contamination & Waste

About Nigel:

Nigel has twenty years of experience in International Development projects as a strategic manager and technical specialist. He is also the Technical Principal for Waste Management services, having worked in the water agriculture and environmental sector since 1995 first as an irrigation engineer and later as a solid waste management specialist. Nigel has extensive experience working on environmental projects both in Indonesia and internationally. Having served in both the private sector, for large international agriculture, environment and development consultants, and for the Donor sector with the World Bank, KfW, ADB and UNDP, Nigel has experience managing projects from both consultant and the client’s side. This gives a unique advantage to ensure the Client is fully understood and the needs of the project are appropriately addressed. He has technical expertise focused on water resources planning and management, Irrigation engineering, agricultural planning and development, solid waste management, Renewable Energy, Climate Change, environmental and social impact assessments, EHS, rural development, institutional capacity building, livelihoods development, post-disaster early recovery planning and management. 

Nigel has managed, and was Team Leader on, a number of large projects in developing countries, situated in post-disaster and post-conflict environments, including TRWMP, ETESP and NSIASP in Aceh, Indonesia, and the ELWDP Command Area Development Project in Eritrea. He has proven himself to be adept in managing multidisciplinary teams, including international consultants, community facilitators, engineers, administrative staff and other support staff, in difficult environments. Through extensive experience in managing projects with complex and widely diverse development activities, Nigel has considerable knowledge of project planning, financial management, procurement, monitoring and evaluation. Geographically, Nigel has worked on a diverse range of projects in the Middle East, Africa, Eastern Europe, and Asia including Pakistan, Libya, Kosovo, Albania, Eritrea, and for more than 12 years in Indonesia. 

Arjen van Schaijk

Contamination & Waste

About Arjen:

Arjen has 25 years of professional experience working as a consultant in the environmental industry. He has held Senior Management positions with technical, operational, and financial accountability since 2005 and has on-the-ground project management experience in most Asia/Pacific countries, in Africa and Europe.

Arjen’s broad expertise covers site investigation, human health risk assessment and remediation, due diligence and compliance assessments, solid waste management, impact assessments and planning and air quality management. With his brought experience from project inception, development and planning through to operations working across countries and cultures, Arjen brings a wealth of knowledge and practical insights to all his consulting projects.

Over the past 10 years, Arjen has been focused on directing projects and growing and mentoring teams for large-scale upstream and downstream oil & gas (O&G) investigation and remediation programs and chemical and manufacturing sector projects in China, South Africa, and Indonesia. Besides, he has been an account manager responsible for client management, business development and operational management with P&L responsibilities.

Arjen has led several multi–year site investigation and remediation programs and numerous complex scientific, technical, and environmental due diligence programmes, including site characterization, remediation options and costing analysis and remediation action plans.

Geographically Arjen has advised on EHS risks, liabilities, and compliance mainly for multinationals in Singapore, Indonesia, South Africa, China, Taiwan, The Philippines, Malaysia, Thailand, Brunei, Japan and The Netherlands.

David Cham

EHS & Risk Management

About David:

David Cham has over 17 years of experience in environmental, health and safety (EHS) consulting. David has a strong track record in EHS assessments including soil, groundwater, water, wastewater, air quality, industrial hygiene, noise, vibration and air quality; EHS compliance; due diligence assessment and sustainability reporting. In his current role, David is responsible for the day-to-day management of ESC’s Singapore business and spearhead the development and growth of the office.

Prior to joining ESC, David has held several senior leadership position including Environmental and Operations manager at an environmental testing laboratory, EHS Manager for Asia Pacific (including Australia, India and Japan) for a datacenter company, EHS Manager for South East Asia for a networking company. He was involved in numerous projects including site investigation and baseline studies; environmental impact assessments; risk assessments; decommissioning, demolition and remediation; across the various disciplines with overall responsibility for the technical and commercial aspects of the projects. He has managed and worked on projects in Singapore and Asia Pacific region including China, Hong Kong, Indonesia, India, Japan, Korea, Malaysia, the Philippines, Sri Lanka, Taiwan, Thailand, Vietnam and Australia.