Built by farmers, for farmers- and everyone else in the supply chain.

Ruminati was founded by Bobby Miller and Will Onus, multi-generational farmers from New South Wales, who built the platform they wished existed when supply chains started asking them for emissions data. Alongside co-founder and technical architect Peter Leihn, they set out to create an agricultural emissions tracking tool that worked from the producer's perspective: practical, straightforward, and grounded in how farming actually operates.

Today Ruminati is Australia's leading on-farm emissions reporting platform, used by producers across beef, sheep, wool, dairy and cropping, as well as feedlotters, processors, banks, and retailers. The platform is guided by advisors including Professor Richard Eckard from the University of Melbourne and livestock industry leader Richard Rains, and is certified under the NFF Farm Data Code.

The focus hasn't changed since day one: give producers the tools to understand their own emissions data, on their own terms, and make sure that data can flow through the supply chain in a way that's useful for everyone- with producers always in control of who sees their data and when.

The Ruminati team

Bobby Miller

CEO and Founder

Bobby combines technical know-how with real-world experience managing his family's 4,250ha property in Coolac. Passionate about empowering producers, Bobby’s mission is to make emissions tracking accessible, so farmers can highlight their sustainability efforts and drive climate stewardship across the supply chain.

Will Onus

COO and Founder

Will brings hands-on experience from running his grazing enterprise ‘Woodside.’ Committed to supporting farmer-led sustainability, Will champions Ruminati’s mission to simplify emissions reporting, helping every producer tell their sustainability story and drive positive change within the industry in a straightforward, no-nonsense way.

Fernando Matsunaga

Head of Product

With 25 years of experience in digital systems and analytics, Fernando excels in creating practical, data-driven solutions. He’s dedicated to simplifying the complex world of emissions management, making it actionable and beneficial for the agricultural industry, and helping farmers drive positive change from the ground up.

Kara Hurry

Strategy & Growth

Kara connects producer values with market demand through brand, provenance and performance. With 15+ years across agriculture, food and fibre, she blends strategy and storytelling to help sustainability deliver real commercial value.

David Nation

Partnerships Manager

David brings decades of experience across farming, agribusiness, and innovation, including as former Managing Director of Dairy Australia. With expertise spanning R&D to commercial delivery, he is passionate about turning science into practical outcomes for agriculture.

Lily Rodgers

Customer Success Lead

Growing up on a cattle farm in the Hunter, Lily is passionate about supporting farmers on their sustainability journey. With a Master’s in Sustainability, she’s committed to helping producers measure and manage their emissions, believing that tracking is the first step towards building a more sustainable future for Australia’s ag industry.

Rosie Rayns

Marketing & Communications

Rosie is a communications professional with a background working for purpose-driven organisations. Combining strategic thinking with creative engagement, Rosie is passionate about supporting the agriculture industry to lower emissions, break down barriers, and unlock the benefits of the evolving emissions space for all levels of the supply chain.

Rowan Winsemius

Head of Engineering

Rowan loves transforming technical challenges into practical solutions. With roots in regional NSW and a career spent on environmental data projects, Rowan is passionate about building user-friendly applications that make sustainability reporting accessible and straightforward for producers and their supply chain.

Iain Kirkpatrick

Lead Developer

A full-stack developer originally from NZ, Ian is passionate about building impactful software solutions. Previously transitioning from GIS to software development in Australia, Ian combines his expertise to support Ruminati’s mission, helping farmers make informed decisions with clear, accessible data.

John Francis

Head of Data

With a background in agricultural production and over 10 years of experience in agronomy, John is dedicated to improving farm performance through data-driven insights. Known across the industry for his strong analytical skills, John thrives on solving agriculture’s challenges and turning obstacles into opportunities.

Kelly Piper

Bookkeeper

Kelly is a Registered BAS Agent with a finance background and a passion for supporting agricultural businesses. With 22 years of on-farm living and hands-on experience in rural merchandise, Kelly has a unique understanding of both the needs of producers and the intersection between emissions reporting, growth and sustainability.