Our Team

Siusan MacKenzie

Chief Executive Officer

Siusan is a super cook who is renown amongst her team for providing delicious lunches making hybrid work all the better. She loves life on the Mornington Peninsula and all it has to offer. She is joined at the hip by Albi her three legged cocker spaniel and he is well known across the sector for bringing joy to people. She enjoys attending regular yoga and pilates and is an avid traveller always looking over the horizon for her next adventure.

Naomi Watt

Administration Officer

Naomi joined ESF in 2021, working closely with Siusan part-time, her responsibilities span financial administration and reporting, administrative and governance support, fundraising assistance, process improvement, communication and collaboration initiatives, executive support, and policy development and implementation.

With qualifications in bookkeeping and business administration, Naomi brings a broad skill set gained through experience in business management, administrative operations, and wholesale sales. Naomi values inclusive practice and brings the strengths and lived experience of neurodiverse thinking to her role, including systems-oriented problem solving, deep focus, and a commitment to continuous improvement.

Outside of work, Naomi can usually be found enjoying quality time with her family, getting lost in a great book, or recharging in nature.

Martine Gilliot

Business Development and Partnership Lead

Martine joined ESF in 2023, bringing experience working with children and families through Kookaburra Kids Foundation’s Police Kids program, where she supported programs for young people impacted by family mental illness.

At ESF, Martine led and implemented the Family Matters strategy. Martine also coordinates the ESF Learning Network, which brings together agencies to share knowledge and strengthen support for emergency service workers and their families. In 2026, Martine moved into a business development and partnerships role with ESF, drawing on her experience securing funding and developing partnerships across the not-for-profit and financial sectors.

Outside of work, Martine runs a family-owned Airbnb in Sassafras with the help of her husband and son. She enjoys snow trips and hiking in beautiful locations. Her son Sam is a CFA member and hopes to one day join Victoria Police.

Franziska Wohlfarth

Marketing and Communications Officer

Franzi joined ESF in October 2025. As Marketing and Communications Officer, she runs ESF’s social media pages, internal and external communications, and assists in events coordination. When she’s not filming content or chasing after viral trends, Franzi can be found with her nose buried in a book, cuddling her cats or browsing through op shops.

Gina Mammone ESM

Senior Program Lead, Residential Wellbeing and Mental Health Matters Programs

Gina joined ESF in 2026, bringing her decades of experience of working across the emergency services sector in NSW SES, NSW Ambulance and Ambulance Victoria where she has worked in crisis intervention, peer support and pastoral care and facilitation of wellbeing workshops/programs in these settings. Gina leads the delivery of the Residential Wellbeing Program and works with the facilitators to embed WorkSafe principles of early intervention, recovery at work and capacity-based return to work planning along with the Mental Health Matters program. Gina works part time, 4 days a week for ESF and when not being passionate about all things Wellbeing, Gina loves the Melbourne city life, cooking, going to art exhibitions, theatre and preparing for another Bali escape!

Dr. Sarah Richards

Research Support

Sarah joined ESF in 2019, to assist with the development of ESF’s Work Well grant application. She stayed on as the Work Well and Learning Network program lead, until December 2023. Under Sarah’s leadership ESF developed the Leading for Better Mental Health and Well Beyond programs. Sarah has now stepped back and her primary responsibility is now the Knowledge Digest.

Flossie and Albi

Co Chief Paw-sitivity Officers

Meet our Chief Paw-sitivity Officers, Flossie and Albi. Between Albi’s lunchtime walks, and Flossie’s help with emails (walking across the keyboard), these two play an important role in the ESF team.