Our Team

GCF is powered by people! Our small multinational team includes members from 16 countries and 4 continents. Together we #StandTallForGiraffe.
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Steph Fennessy

Executive Director, Co-Founder

As Executive Director and Co-Founder Steph handles GCF’s day-to-day business, including liaison with conservation partners throughout the world and fundraising. With an MSc in Environmental Engineering, she is a skilled and experienced environmental manager who has successfully worked in diverse working cultures and multidisciplinary teams within the private, Government and NGO sector on three continents – Africa, Australia and Europe. Steph’s expertise is in project management and ranges from community-based natural resource management to technical sustainability solutions. She continues to be hands-on involved in a wide range of giraffe projects across Africa and particularly enjoys spending time in the field. Steph is a member of the IUCN SSC Giraffe & Okapi Specialist Group and when asked how she got involved in giraffe conservation, she will probably tell you that she ‘married into it’.

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Julian Fennessy

Director of Conservation, Co-Founder

Julian is the Co-founder and Director of Conservation of GCF and coordinates all giraffe conservation efforts as the technical expert. He has over 25 years experience in species and habitat ecology, conservation and land management throughout the African continent as well as in Australia. His experience in the field of giraffe conservation is something few others can boast, from individual field projects, supervision of students, population and country-wide assessments, to expert advisor on national, regional and international conservation policies, strategies and action plans. Julian continues to be hands-on during conservation expeditions throughout all regions of the Africa continent, and has worked with all giraffe species and subspecies. In 2013, he was the driving force behind establishing the IUCN SSC Giraffe & Okapi Specialist Group and after many years of providing inspirational leadership to the group recently retired as the Co-Chair. Julian holds a PhD in Biological Science from the University of Sydney, Australia, based on his initial research on the ecology of the desert-dwelling giraffe in Namibia’s northwest. Julian is an Adjunct Professor position at the University College Dublin (Ireland) after previously holding similar adjunct positions at Dartmouth College (USA) and the University of New South Wales (Australia). He has published more than 100 peer reviewed scientific publications, and his diverse skill base provides a solid science and conservation foundation from which GCF can grow.

Operating Staff

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Naemi Antonius

Senior Environmental Educator (KEEP)

Naemi is the Senior Environmental Educator for the Khomas Environmental Education Program (KEEP). She holds a Bachelor’s Degree in Natural Resources Management (Nature Conservation) from the Namibian University of Science and Technology. Before joining GCF as an intern in 2016, she did an internship with the Namib Desert Environmental Education Trust (NaDEET) where she developed a keen interest in environmental education. Naemi loves nature and all living things, but her real passion is for plants.

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Michael Butler Brown

Conservation Science Coordinator

As GCF’s Conservation Science Coordinator, Michael is responsible to ensure that all conservation initiatives are supported by the most rigorous science available. Michael brings a passion for conservation and a wealth of experience in both field research and applied quantitative ecology; seeking to integrate nuanced ecological perspectives into meaningful conservation action. Michael holds an MA in Conservation Biology from Columbia University and a PhD in Ecology, Evolution, Ecosystems and Society from Dartmouth College (USA). He worked as a field programme manager for Princeton University in Kenya and held a Post-Doctoral Fellow at the Smithsonian National Zoo and Conservation Biology Institute. Michael is committed to developing and applying cutting edge technology and analytical frameworks for deepening understandings of how giraffe interact with their environments throughout Africa. Combining diverse scientific perspectives including giraffe movement, population dynamics, foraging, and behavior, Michael coordinates research with diverse academic, government and NGO partners to translate science into meaningful strategy and action. Michael also currently serves as the Co-Chair of the IUCN SSC Giraffe and Okapi Specialist Group.

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Petra ‘Audi’ Ekandjo

Environmental Educator (KEEP)

Audi joined GCF in 2018 as an Environmental Educator for the Khomas Environmental Education Programme (KEEP). With a BSc in Natural Resources Management and an Advanced Certificate in Python Programming from the Namibia University of Science and Technology, Audi enjoys working with data, animals and people. He now coordinates GCF’s long-term conservation monitoring programme in North-Western Namibia which allows him to combine his passions by spending time in the field and crunching data in the office. Audi grew up in the central north of Namibia and has a keen interest in learning more about the environment, in particular large mammals, in Namibia. Outside of work, Audi enjoys travelling and camping.

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Sara Ferguson

Conservation Health Coordinator

Sara is a wildlife veterinarian and GCF’s Conservation Health Coordinator. She graduated from the University of Florida’s College of Veterinary Medicine and is qualified with the Namibia Veterinary Council. Sara leads the Giraffe Conservation Health Initiative that approached giraffe conservation from a veterinary science and conservation medicine perspective. In this role Sara coordinates veterinary support for GCF’s field operations, evaluates the best immobilization practices for giraffe, addresses disease and health issues in wild giraffe populations, assists in the development of new technology for satellite tracking and methods for conservation translocations. She also works collaboratively with partners, such as the University of Namibia School of Veterinary Medicine, to enhance capacity building opportunities for the next generation of Africa’s wildlife veterinarians. Sara is an associate researcher for Naples Zoo at Caribbean Gardens, Florida, who generously sponsor her position.

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Martha Haukongo

Environmental Educator (KEEP)

As an Environmental Educator in the Khomas Environmental Education Program (KEEP), Martha spends most days out in the field sharing her passion for nature with young Namibian students and their teachers. Martha holds Bachelor degrees in Natural Resources Management and English & Linguistics from the Namibia University of Science & Technology (Namibia). Born and raised in northern Namibia, Martha’s interest in conservation developed at a young age and the is particularly fascinated by animal behavior and understanding how it influences human-wildlife conflict. In her free time, Martha enjoys watching nature documentaries, which continue to inspire her love for the environment.

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Rigardt Hoffman

Program Officer (Southern Africa)

Rig serves as the Conservation Program Officer for the Southern African operations of GCF. He has a background in marine science from the Universities of Newcastle (Australia) and Cape Town (South Africa), and his MSc thesis focused on shark behavior at the South African east coast. After a short stint working in Botswana’s Okavango Delta, Rig’s focus changed towards terrestrial ecology and he hasn’t looked back since. His role involves an exciting blend of desktop research and hands-on fieldwork, allowing him to engage deeply in giraffe conservation efforts throughout the region. Rig works closely with many GCF partners to advance conservation initiatives while further exploring the diverse landscapes of Southern Africa. As part of his current position, Rig is pursuing a PhD at the University of Mpumalanga (South Africa). His focus is on the distribution of giraffe and their genetics in South Africa aiming to contribute to a better understanding and the protection of these iconic animals.

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Adams Kipchumba

Program Officer (East Africa)

Born and raised in Kenya, Adams is a conservation scientist with a keen interest in animal movement ecology, conservation conflicts and socio-ecological systems. Adams is a certified public accountant, who started his professional career as Accounts and Data Officer at Space for Giants, where his passion for conservation was ignited. After completing his MSc in Environmental Management (Conservation) at the University of Stirling, Scotland, UK with a Commonwealth Scholarship, he worked as researcher for Save the Elephants, focusing on elephant movement ecology and human-elephant conflict. With over seven years of experience in the conservation sector in Kenya, Adams recently joined GCF as the East Africa Program Officer. When not wrapping his head around R and GIS, Adams spends his time outdoors and you will often find him hiking or camping somewhere in the wilderness of Kenya.

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Martina Küsters

Program Coordinator (Etosha Heights Conservation Centre)

Martina joined the GCF team in 2022 as the Program Coordinator at the Etosha Heights Conservation Centre on a private reserve adjacent to the iconic Etosha National Park in Namibia. She oversees GCF’s comprehensive conservation monitoring program of giraffe and other key species in this diverse landscape. Martina started her conservation career as a field technician in Etosha National Park for the University of California (Berkeley, USA), where she assisted in the capture, tracking and other data collection of a wide range of wildlife species. She holds a BTech in Nature Conservation from the Cape Peninsula University of Science & Technology (South Africa). As a member of the Black-footed Cat Working Group Martina monitored these elusive cats in the Upper Karoo in South Africa and continues to coordinate a similar project in Namiba.

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Courtney Marneweck

Conservation Technology Coordinator

As GCF’s Conservation Technology Coordinator, Courtney can combine her passion for applied science with expertise in data and technology. She leads efforts to streamline and develop GCF’s data systems, enhancing collaborations, outputs, and conservation impact. Drawing on her experience in behavioural and spatial ecology, Courtney has worked on a range of mammal species, including white rhinos, African wild dogs, and small carnivores. Her academic background includes a PhD from the University of KwaZulu-Natal (South Africa) and postdoctoral fellowships at the University of Mpumalanga (South Africa) and Clemson University (USA). This diverse experience equips her with a unique perspective on integrating data-driven insights and innovative tools to support giraffe conservation across Africa. When she’s not advancing GCF’s mission, Courtney enjoys travelling and spending time with her dogs.

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Kudakwashe Mbaiwa

Finance Intern

Kuda joined GCF in June 2019 as a finance intern in our Windhoek office. He completed his Honours Degree in Finance Management at the International University of Management in 2021. Originally from Zimbabwe, Kuda moved to Namibia when he was 13 years old. During his free time he enjoys playing soccer and tennis as well as gaming.

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Timo Mvula

Environmental Educator (KEEP)

Timo is one of the environmental educators in GCF’s KEEP team. He holds a Bachelor’s Degree in Natural Resources Management (Nature Conservation) from the Namibia University of Science and Technology. Born and raised in Namibia, Timo is passionate about nature, conservation and enjoys working with people who share his passion for nature and animals, as well as handling data. Outside of work, Timo enjoys spending time with his family and travelling.

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Nicky McNamara

Finance & Compliance Manager

Nicky joined GCF as the Finance & Compliance Manager in early 2022. Born and bred in Namibia, Nicky has a passion for the environment and a love for simplicity. Nicky has spent the last decade working on a variety of projects and contracts while concentrating on her primary role as a mum to three children. She is a multi-faceted individual with strong ethics and organizational skills, which will come handy in her first foray into the NGO sector. Outside of work, Nicky can usually be found enjoying time with friends and family or her head firmly stuck in a book. She is excited to explore a new working environment and ready for new challenges.

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Arthur Muneza

East Africa Coordinator

As GCF’s East Africa Coordinator, Arthur heads up the Nairobi office. He brings together research efforts and partnerships to secure the future of the three species that occur in the region: Masai, Nubian and Reticulated giraffe. Originally from Rwanda, he spent his formative years living and learning in Kenya, one of the most biologically diverse countries in Africa, where he nurtured an interest in wildlife ecology and conservation. Through the support and collaboration with GCF and other partners, Arthur obtained his Masters and PhD degrees from Michigan State University in the USA, where his research mainly focused on the ecological and anthropogenic factors affecting giraffe survival in East Africa. Through a broad and diverse network of collaborators and partners, Arthur leads GCF’s efforts to support and implement various giraffe conservation initiatives throughout East Africa.

Board of Directors

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Till Hollmann

Till grew up along the Alaska Highway in Northern British Columbia (Canada) where his passion for the outdoors and wildlife was sparked at a young age. When he visited Steph and Julian in Namibia in 2010, he became interested in giraffe and has followed and supported the work of GCF ever since. Till’s educational background includes a BA in Philosophy from the University of Victoria in Canada, an MSc in Engineering from Linköping University in Sweden, and an MBA from Case Western Reserve University in Ohio, USA. He currently lives in the Houston area with his wife and son where he is a Vice President and General Manager with Crane Co. Till has worked globally for several multi-national companies including Eaton and Alstom, and his career includes roles in general management, supply chain management, operations, new product development and information systems. Till’s skills will help GCF to grow as an organisation in his role as the Chair of the Board. Outside of work Till enjoys good food, running, skiing, cycling and photography.

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ShariLeigh Gordon

ShariLeigh is a native New Yorker who has been drawn to the African continent since her first visit at the age of 12. Her love for adventure travel brought her back years later for a safari, where the first animal she saw was a giraffe galloping across a plain. She was immediately hooked. ShariLeigh spent several years working and living in Johannesburg, South Africa, During that time she travelled around sub-Saharan Africa extensively, taking every opportunity she could to enjoy the unique wildlife. ShariLeigh has a BA in the Biological Basis of Behaviour from the University of Pennsylvania, a JD from Fordham University and an LL.M. in Taxation from NYU. She has spent her career executing transactions across the globe, working for several well-known entities, including EY and Bank of America. Her professional experience will be an asset as GCF seeks to maximise its impact on giraffe conservation. ShariLeigh loves to cook and enjoys good wine, particularly South African Cape Blends. She is dedicated to fitness and spends as much time as she can in New York’s Central and Riverside Parks.

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Chris Kelsch

Chris is an active multi disciplinary designer and creative from the Greater New York City area. Chris studied and graduated from The Pratt Art Institute in Brooklyn New York and has worked in advertising since. In 2018 Chris joint GCF for a one-month volunteer placement through The International Exchange when he helped GCF develop its brand voice. He was inspired by Julian and Steph’s passion for giraffe and has supported GCF.

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Lars Markgren

Lars was born Skellefteå in northern Sweden, but with a father who worked for the World Bank and a mother who liked adventure, he spent most of his childhood in Maryland (USA) and his teens in Kenya. Lars has an engineering degree from The Royal Institute of Technology in Stockholm and has spent his professional career starting and building companies mainly in the online gaming space. With a keen interest in wildlife and Africa Lars has been involved in conservation for a while. When meeting Julian and Steph in 2017, he was fascinated and impressed by their work and has provided support to GCF since then.

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Tim Tetzlaff

As Director of Conservation at Naples Zoo, Tim focuses on bridging the gap between ex situ and in situ conservation, advancing opportunities where zoo animals directly benefit their wild counterparts. He oversees 20 long-term conservation partnerships with government agencies and non-governmental partners. As President of the Florida Association of Zoos and Aquariums, he amplifies member institutions’ conservation achievements to statewide audiences. As Chair of the Madagascar Fauna and Flora Group, Tim emphasizes integrating science with community-driven solutions to protect biodiversity. He also leads a conservation travel program, personally connecting participants to fieldwork with global partners. He holds two degrees from The Ohio State University and brings decades of experience and strategic thinking to his work.

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Lindy van den Bosch

South African by birth, Lindy holds a Commerce Degree and is a chartered accountant who has worked in finance across Southern Africa. With a love for the African bush, Lindy is also an experienced nature guide with a special interest in birding. From her adopted home in Windhoek, the busy mother of two boys now runs a successful lodge management company in Namibia together with her husband. Lindy has travelled extensively in Southern Africa, Europe and the USA and is an accomplished endurance athlete: swimming, running, cycling – you name it! With her head firmly on her shoulders and sound financial management competence, she brings important finance skills and scrutiny to the GCF Board.