Our Team

Our team is a rich melting pot of passionate, highly skilled professionals from diverse backgrounds and faiths. 

Rabbi Zalman Kastel AM  -  Founder and National Director


Rabbi Zalman Kastel AM is the National Director of Together For Humanity. Rabbi Kastel was raised in the ultra-orthodox Hasidic tradition in the racially divided Crown Heights area of Brooklyn, New York. He saw the world through the lens of his absolute tradition and the narrative of his community. This changed in 2001 when encounters with Christians and Muslims transformed him. He has had a lot of laughter, surprises and dilemmas on his journey of interfaith cooperation and bringing positive experiences of diversity to over 100,000 young Australians. He is still a Hasidic Rabbi teaching bible study at Chabad House North Shore in Sydney. He was ordained as a Rabbi after study in the UK, Australia and the US, and completed a Graduate Diploma in Education with the University of New England, Armidale. In 2020 he was made a member of the Order of Australia in recognition of his work on interfaith and intercultural understanding.

Diane Harapin - Chief Executive Officer


Diane is an experienced for purpose Chief Executive Officer who has committed the past 14 years of her career to scaling charitable organisations. Diane has established both commercial and not-for-profit entities from scratch, including IBK Asia Pacific and the Foundation for Breast Cancer Care. She was the inaugural CEO at Adopt Change, formerly National Adoption Awareness Week founded by Deborra-lee Furness. Diane restructured and refreshed two membership-based organisations – BreastSurgANZ, where she renewed their governance and financial sustainability, and the recently re-branded Australian Vision Research where she managed the $500,000 yearly grant program. An impassioned leader and devoted mother of four, Diane holds four degrees in education and management including M.Ed, M. Phil, B.Ed, Dip.Ed, TAE.

Julia Gyomber  -  General and Engagement Manager

Julia Gyomber

Julia is the General and Engagement Manager at Together For Humanity, and has over 15 years’ experience in successfully developing, designing and delivering programs to strengthen communities and families across Australia, with a focus on refugee, indigenous and culturally and linguistically diverse youth. Her work in Perth was awarded the state’s Premier’s Award for Strengthening Families and Communities. Julia holds a Bachelor of Arts (Women’s Studies) from La Trobe University and a Bachelor of Social Work (Anti-Oppressive) from Victoria University. Working for Together For Humanity, Julia has continued to heighten her sense of fellowship for the team as she is surrounded by the kind of people who empower one another to be at their best.

Nicky Sandler  -  Communications Officer

Nicky Sandler

Nicky is a professional communicator whose areas of expertise span marketing, communications and writing. She has over 15 years’ experience designing marketing and communication strategies, managing large scale projects and producing compelling content. A passionate teacher, Nicky has taught communications and management at several universities as well as English as a Second Language. Nicky holds a Bachelor of Arts (English and French), Masters in Communication Management, Cambridge CELTA and Certificate IV in TESOL. She is inspired by working with bold organisations and crafting authentic, engaging stories that touch people. Bilingual in French, Nicky loves French language and fromage in equal measure.

Aamon Sayed - Community Engagement Officer, Victoria

Aamon Sayed

Aamon was born in South West Sydney. A community worker and educator, he has worked with at-risk youth, people struggling with addiction, victims of domestic violence and those who feel alienated because of their culture, faith or economic situation. Since 2013, he has strived to provide impactful grassroots programs that challenge and motivate young people to become their best selves. Energetic, passionate and actively involved in the community, Aamon hosts a popular podcast. He is currently completing a Bachelor of Social Work at Western Sydney University.

Hezie Lazarov - Project Officer

Hezie Lazarov

Hezie is passionate about multiculturalism and interfaith dialogue. He has previously worked with multilingual communities at SBS Radio and with Indigenous communities at Ngaanyatjarra Media. He has also spent a number of years working at Courage to Care NSW coordinating exhibition workshops in regional areas, teaching students how to be upstanders whenever discrimination or racism occurs. Hezie also has experience empowering young people to express their own culture as well as respecting others. He brings a wealth of program coordination, youth engagement, fundraising and communication skills to TFH. He also loves hummus, AFL and multilingual music.

Tanja Hagedorn - Queensland Coordinator

Tanja Hagedorn

Tanja is a senior professional with over 20 years’ experience in health, youth development, community and volunteer engagement in the US, South Africa and Australia. She is a skilled facilitator and mediator, committed to building inclusive processes in community settings, with a special interest in interfaith and intercultural dialogue. Tanja’s experience as a facilitator has given her the experience and belief in the transformation of individuals, families and communities through authentic dialogue, creative and spiritual processes and quality education. She is passionate about challenging people’s biases and societal norms, encouraging critical thinking and empowering people to use their voice to fearlessly journey through conflict and find peaceful and lasting resolutions. Tanja loves travelling, reading historical fiction and spending time with her husband and three children. When she has a moment to herself, you can find her sweating in her local community boxing gym.

Kathleen Gordon - Curriculum Advisor

Kathleen is Together For Humanity’s Curriculum Advisor. Based in Queensland, Kathleen has taught in primary, secondary and tertiary sectors and worked on diverse curriculum projects including the United Nations Environment Programme (Teacher Education Project), and advised the Australian Curriculum, Assessment and Reporting Authority (ACARA) on its development of the Australian Curriculum: History. Kathleen has considerable experience presenting at conferences, facilitating workshops and writing student and teacher materials for education and curriculum authorities, NGOs and professional associations. Most recently, she authored two chapters in the 8th edition of the university text Teaching Humanities and Social Sciences (Cengage Learning, 2019). Kathleen is passionate about integrating social justice, peace, sustainability and democratic process into teaching and learning programs.