Meet the Team
B-Alternative is a grassroots, environmental consultancy group built by passionate people. We are able to do the incredible work we do because of our team, so take a minute to get to know these change-makers below!
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Founder & Director
Jason Rahilly
Jason is the founder and director of B-Alternative, guiding its strategic direction, partnerships, and environmental consulting. With over 15 years as a licensed builder and project manager, he saw the environmental toll of conventional practice, and now combines his hands-on expertise with systems thinking to tackle waste.
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He founded B-Alternative to deliver practical solutions that prioritise people and planet—supporting events, councils, schools, and businesses in adopting low-waste systems and circular thinking.
​He’s also co-director of Gypco, a sustainability-focused building company, and enjoys cricket, surfing, animals, and the outdoors with his family.
Programs Manager
Belinda Flanders
Belinda leads operations at B-Alternative, supporting organisations to adopt low-waste, people-focused systems. She also coordinates Shuck Don’t Chuck with The Nature Conservancy, transforming shellfish waste into reef restoration.
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With a calm, collaborative approach, Belinda helps councils, festivals, events, communities and corporates embed circular thinking and drive meaningful change.
A passionate scuba diver and reef advocate, she finds joy in nature and connection, seeing sustainability as a purposeful way of life.
Communications Manager
Gretel Tobin
Gretel (She/Her) is driven by values of community, creativity and curiosity - Gretel is passionate about deepening our relationship and care for place in urban environments. Gretel believes that creativity and design is integral integral in creating climate resilient communities and nurturing the health of our natural world.
Gretel has a degree in Environmental Science and Outdoor Education and over 3 years of experience in B-Alternatives circular services at Festivals & Events.
Festivals and Events Manager
Joshua Davies
Joshua manages B-Alternative’s Festival and Events services, helping bring reusable and waste-minimising systems to life on event sites, and engage with event audiences in circular thinking.
He values reflecting on how humans occupy space and interact with our neighbours, and our role. Joshua’s creative and community practice has grown through artistic and sustainability-focused engagement at community events. Joshua hopes to keep learning and sharing about human connection and the fabric of nature that we are a part of.
Waste Audits and Events Coordinator
Karla Zacharias
Karla has a deep-rooted passion for sustainability which serves as the compass for her everyday decisions and beliefs.
She is dedicated to making a meaningful impact on the world, consistently guided by the desire to contribute positively to others and our planet. She is an avid traveller, immersing herself in new cultures, connecting with people from diverse backgrounds, and embracing different perspectives.
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Circularity Manager - Victoria
Lachie Pavlovic
Lachie is a naturally curious person, a lover of books, travel, and nature. He values connection to place and community, using these as guiding values in daily life.
He believes there is a disconnection between contemporary society and the environmental impact spurring the biodiversity and climate crisis. This is what inspired him to undertake an MA in Sustainability and apply it in the Circular Economy.
Circularity Advocate - Tasmania
Milca Perez
Milca Perez (she/her) is a dedicated changemaker with over ten years of professional experience and academic achievements. She is focused on long-term goals in holistic sustainability for families and communities.
Milca is passionate about the circular economy, incorporating design, systems thinking, placemaking and spirituality into sustainable living.
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In 2023, she received the EPA Sustainability Award (Community) and the Huon Valley Citizen of the Year award.
She enjoys gardening, crop swaps, clothes swaps, carpooling, mending, permaculture and astro-herbalism.
Circularity Advocate - Queensland
Karina Del Mar
Karina Del Mar (she/her) is a passionate sustainability advocate and community connector. With a background in Communication and Environmental Management, she brings a holistic, heart-led approach to regenerating our planet.
As Be Alternative’s SE Queensland ambassador, Karina is dedicated to empowering others through circular systems, education, and creative community engagement. She thrives on building bridges between people, cultures, and ideas, always with joy, purpose, and connection to nature. Her passions include composting, slow fashion, festivals , and creating spaces where people feel inspired to thrive together.