Our staff

Standard Page - 23 June, 2010
Greenpeace Australia Pacific employs a variety of staff in our offices, warehouse, ships and in the field. Meet some of our staff here. If you are a journalist and would like to speak to one of our staff below, please contact our media team on 0418 408 683.

Staff Member


David Ritter


Lisa Walters

Chief Operating Officer

Lagi Toribau

Oceans Team Leader

Reece Turner

Senior Campaigner

Nathaniel Pelle

Oceans Campaigner

Nikola Čašule

Climate and Energy Campaigner

Julie Macken

Senior Communications and Media Relations Officer

Alex Harris

Arctic Digital Campaigner

Claire Pryce

Major Relationships Manager

David Ritter

David Ritter, CEO

David returned to Australia to become CEO of Greenpeace Australia Pacific in 2012 after five years with Greenpeace in London, where he campaigned on the global issues of destructive fishing, deforestation and climate change.

Prior to joining Greenpeace, David worked as a lawyer practising in general litigation, resources law and native title, before spending a short stint as an academic teaching in law and history. David was acknowledged as one of Australia’s leading Indigenous rights lawyers and is the author of Contesting Native Title and The Native Title Market.

A widely published commentator on politics, law, history and current affairs, David is an Honorary Fellow of the Faculty of Law of the University of Western Australia and an Associate of the Sydney Democracy Network at the University of Sydney.

David has had an extensive involvement in civil society in both Australia and the UK. He holds honours degrees in both law and history from the University of Western Australia and masters with distinction in global politics from the London School of Economics.

David grew up in Western Australia, the youngest of seven children. He now lives in Sydney and is married with two daughters.

Read David's blog

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Lisa Walter

Lisa Walters, Chief Operating Officer

As the Chief Operating Officer Lisa is responsible for Finance, Human Resources and Technology. Lisa joined Greenpeace in December 2013 following 15 years in the Financial Services sector, locally and internationally, managing transformation change. Lisa is a Chartered Accountant who brings leadership in operational support and cultural change management to achieve organisational goals.

Her interests range from heath and well being (as a qualified naturopath) to enjoying the outdoors with her family. Lisa is excited to be part of Greenpeace, raising social awareness of environmental threats at a local and global level.

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Lagi Toribau

Lagi Toribau, Oceans Team Leader

Lagi joined Greenpeace in 2001 as a volunteer, before becoming a campaigner based in Fiji at just 20 years old. Since then, he has led four ship tour expeditions targeting pirate fishing and tuna over-fishing in the Pacific, as well as Greenpeace's participation in key regional and international fisheries meetings. 

Most recently, Lagi has worked as the Head of Program for Greenpeace East Asia, managing the Climate and Energy and Oceans campaigns. He has been a critical member of Greenpeace's regional and international team campaigning for sustainable and equitable seafood procurement across Europe, Asia and the USA.

 "The fight against the powerful, the greedy, the corporations, the government, the sceptics drives my passion to strive for a better world for my people. In Greenpeace, there is never a dull moment."

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Reece Turner

Reece Turner, Senior Campaigner

Reece started campaigning for Greenpeace in 2008, excited by the prospect of tackling environmental issues on a global scale.

After forsaking a promising career in law (and much to his family’s dismay), Reece became an environmental activist and campaigner for a number of organisations. He most recently worked with The Wilderness Society, an experience that continues to test his allegiances when two organisations meet on the soccer field.

He has led a variety of campaigns for Greenpeace. These include a successful push to ban the import of illegal timber, exposing corporations profiting from the destruction of orangutan habitat and advancing effective recycling programs in Australia to reduce plastic pollution in our oceans.

Reece continues to be motivated by his love of nature, his partner and his ridiculously cute daughter.

“Whether I’m climbing up a building dressed as a penguin or working out logistics on an excel spreadsheet, I love my job. I know I'm incredibly fortunate to be in a position where I get to have a crack at saving the world (or just a piece of it) every day. One email or penguin suit at a time!"

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Nathaniel Pelle

Nathaniel Pelle, Oceans Campaigner

As the Sydney-based Oceans Campaigner, Nat leads Greenpeace’s campaign to protect Australia’s oceans from reckless corporations and government inaction. He currently runs a project that aims to connect Australians to the Pacific and to protect fishing stocks. As one of the few Greenpeace offices connected to the Indian Ocean, Nat certainly has his hands full conducting research and action against destructive fishing in this region.

Nat coordinated the public campaign in 2012 that led to the MV Margiris supertrawler being banned from Australian waters for two years. He also led the Australian campaign that made canned tuna brands like John West, Coles, IGA, Aldi and others stop supporting destructive fishing methods.

Nat grew up in Newcastle where he worked as a graphic designer. Against the backdrop of this large coastal, industrial town his love of the ocean and concern for workers rights and livelihood developed. He studied Peace and Conflict, Media, and Environmental Politics in Newcastle, Sydney and Edinburgh, Scotland.

“My working life has been varied but nothing beats working for Greenpeace. We are ordinary people from all walks of life and every corner of the globe just trying to make a difference.”

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Nikola Čašule, Climate and Energy Campaigner

Nikola joined Greenpeace as a Climate and Energy Campaigner in early 2014.

He previously worked as a university lecturer and researcher in the United Kingdom and Australia and has taught at the University of Oxford, Sydney University and the ANU. He holds a PhD in Ancient History from the University of Oxford and a BA (Honours) degree from Macquarie University.

Nikola joined Greenpeace after deciding that he could no longer focus on studying the rise and fall of ancient civilisations without doing everything possible to help deal with the climate crisis facing our own.

“Climate change is the most serious threat facing the human race. The extent to which we take action will not only determine whether we can live on a peaceful and prosperous planet but also how our generation will be viewed by our children and grandchildren. We can’t let them down.”

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Julie Macken

Julie Macken, Senior Communications and Media Relations Officer

Julie Macken joined Greenpeace in 2010 after a diverse working history spanning the non-profit and finance sectors.

Previously working in women’s services in NSW, Julie has spent many a long and happy day in collectives to establish women’s refuges, a women’s detox and women’s rehabilitation centres.

Most recently, Julie has worked as a senior feature writer with The Australian Financial Review, a consultant for the Shadow Minister for the Environment, and in the finance sector.

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Alex Harris

Alex Harris, Arctic Digital Campaigner

Alex began working for Greenpeace within the digital team in 2011, but is more famously known for peacefully protesting on the Greenpeace ship, the Arctic Sunrise, against oil production in the Arctic in 2013. Alex, and 29 other activists and journalists, known as the ‘Arctic 30’, spent 2 months in a Russian prison and 5 weeks on bail, facing charges of piracy and then hooliganism, before receiving amnesty.

Alex is motivated by her love of nature but is also attracted to Greenpeace through her adventurous spirit. In her spare time, Alex likes to go diving, go on long walks and take lots of photographs.

“I reckon I have one of the most rewarding jobs in the world. I get to help Greenpeace win campaigns and achieve environmental victories through online supporter engagement and mobilisation. But I don’t just sit in front of a computer all the time! My job takes me on exciting adventures, from sailing on the Rainbow Warrior in Australia to experiencing life in a Russian prison cell! The peaceful protest on Gazprom’s oil rig in the Arctic sea was my first direct action - pretty good going for a first action I reckon!”

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Claire Pryce, Major Relationships Manager

Growing up in South Africa, Claire became passionate from a young age about fighting issues of injustice.

After obtaining a degree in Psychology and Anthropology from the University of Cape Town, Claire moved to the UK to pursue a career in relationship management - starting off in the recruitment industry and then working for social change organisations.

Claire worked as a corporate and events fundraising manager in the humanitarian and medical research spheres before moving to Australia in March 2012 to take up the role of Major Gifts Manager at Greenpeace.

Claire is passionate about recognising and valuing the very people that enable Greenpeace to carry out our vital work. It is the warmth and generosity of these supporters that leaves Claire humbled and inspired on a daily basis.

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