Pacific
Our work in the Pacific is focused on providing evidence-based solutions to the challenges at the intersection of people and the environment.
We work collaboratively with funders, governments, non-governmental organisations, civil society organisations and private businesses to develop inclusive and ecosystem-based approaches that tackle the growing threats of climate change. This includes the planning, design and delivery of nature-based solutions that build resilience in local communities and coasts.
Leadership staff in region
Our people are our greatest strength. We employ a wide range of scientists, economists, engineers and natural resource managers.
Simon Hammer
Regional Manager - Pacific
Simon leads the Alluvium Group's work across the Mekong , bringing a systems-thinking approach to the region’s most pressing , climate, and sustainability challenges. With qualifications in both engineering and law, and over a decade of experience across public and private sectors, Simon specialises in integrated strategy, program design, and cross-sector collaboration.<br><br>He is passionate about shaping climate-resilient futures through inclusive partnerships, nature-based and adaptive solutions, and long-term capacity strengthening. Simon works closely with governments, multilateral organisations, and community partners to deliver practical, locally grounded outcomes that align environmental sustainability with social and economic needs.<br><br>Simon’s leadership has supported regional initiatives focused on water security, basin-scale planning, and climate adaptation—particularly across Southeast Asia. He is also a recognised contributor to the water and sustainability sectors, having co-founded the non-profit Our Future Cities and held advisory and volunteer roles across Australia, Africa, and Asia.<br><br>As Regional Lead for the Mekong, Simon brings a steady hand, a collaborative mindset, and a deep commitment to supporting resilient communities across the region.
Simon Tilleard
General Manager - International
Simon has extensive experience in the application of water resource management technical knowledge and skills, focussing on the Asia-Pacific region. His experience covers a broad range of water resources-related technical functions including innovative research, analysis, policy development and capacity building. He has worked in more than 11 countries across Asia and the Pacific.<br><br>Simon heads up our international team spanning South Asia, South East Asia and the Pacific. He has been responsible for managing large multi-disciplinary teams to deliver multi-million dollar water resources and climate change related projects for donors including the Asian Development Bank, the World Bank, USAID and the Mekong River Commission.<br><br>Simon has been actively engaged in the improvement of approaches to water resources management in Australia and internationally. He has also been actively involved in building capacity in water management, including leading training for government and academic staff in Vietnam, Nepal and Thailand, and developing modelling guides for the Vietnamese Government, Royal Thai Government and the Mekong River Commission.