Our Team

Tom Kourambas

Grain Broker

Since completing a degree in Agriculture from the University of Melbourne, Tom has worked in the commodities space both in Australia and overseas prior to joining the Grain Brokers team in Victoria.

Tom is looking forward to using his skills and knowledge of global and domestic grain markets to assist growers achieve higher prices.

Outside of work, Tom enjoys playing and watching sports as well as spending time with friends and family.

Eddy Ziebarth

Grain Broker

Eddy grew up on his family farm, where he developed a strong agricultural foundation. He moved to Melbourne to study agriculture at Melbourne University, blending his practical farm experience with academic insights.

On weekends, Eddy enjoys playing footy and fishing, which keep him connected to his rural roots and offers a well-deserved break from his professional pursuits.

Nick Kellock

Grain Broker

Nick has joined Grain Brokers Australia with over 3 years of experience in domestic grain trading and accumulation.

Nick grew up on a mixed cropping farm near Yarrawonga, where he developed a deep understanding of agricultural practices from an early age. Nick later completed a Business Finance degree at Monash University, combining his hands-on farm experience with a solid financial and business foundation.

Nick is eager to use his expertise in the East Coast grain markets to help maximise farmgate returns for growers. Outside of work, Nick is a keen Collingwood supporter who also enjoys playing golf and waterskiing on the Murray.

Jeffrey Winspear

Director

The need for a full brokering service to farmers in WA in the lead up to deregulation of the export grain industry was the reason behind Jeff starting Grain Brokers Australia.

Jeff founded Grain Brokers Australia (formerly Grainassist Perth) in WA in September 2007, after working for AWB in the eastern Wheatbelt.

Originally from a family farm in Gnowangerup, Jeff moved to Victoria to study at Marcus Oldham College in Geelong, before returning home to work in the grain industry in WA.

David Hanrahan

General Manager

David has worked in agribusiness in Australia for more than 25 years. His professional experience includes banking, grain trading (international and domestic), marketing, business development and senior management.

Past employers include Australian Barley Board (ABB), Grainco (Marketlink), Peter Cremer Australia and Mars Australia. David has a deep understanding of domestic and international grain markets and supply chains as well as a grassroots grasp of the needs and priorities of growers.

He has excellent relationships across all sectors of the agribusiness industry. David joined Grain Brokers Australia in March 2017 and is committed to the success of the business in this new phase of development.

Paul Moss

General Manager

Paul joined GBA as our General Manager in March 2024. He is an experienced business leader who spent the last 7 years overseeing organisational performance for a successful business delivering medical and emergency response services to the Australian mining industry.

Paul’s approach to business is built on solid communication. He’s excited to build his knowledge and experience in the grain industry and looks forward to establishing strong relationships with Australian growers and GBA members to optimise client returns.

Outside of work Paul enjoys camping, surfing, fishing, family holidays and coaching the local junior footy team.

Kirsten Ross

Operations Coordinator

Kirsten joined the team at Grain Brokers Australia in November 2013. Kirsten grew up on the family farm at Jerramungup and moved to Perth to complete her secondary education.

She has previously worked as a Sampler at CBH for 3 years during the harvesting period. Kirsten comes to us at Grain Brokers Australia with a broad knowledge of all aspects of grain growing, livestock management and office experience which she has gained during previous employment.

When not at work, Kirsten enjoys catching up with friends and family and going to the beach.

Molly Alderson

Marketing Administrator

Molly joined Grain Brokers in 2024 and works part time in the Perth office. She has previously worked as a Sampler at CBH during the harvesting season.

She is currently studying a Bachelor of Commerce, majoring Marketing and Human Resource Management at Notre Dame University.

Outside of work and study, Molly enjoys going to the beach and visiting her farming friends to lend a hand.

Nick Tidswell

Commercial technology

Nick joined Grain Brokers Australia in August 2024 as Head of Commercial IT.

He brings with him a wealth of knowledge in Finance and Trading having worked in Investment Banking and Hedge Funds in the UK.

His Passion for Agriculture and the grain market came from CBH Group where we worked as Derivative Trader, S&D Analyst and Data Scientist over his 6 year tenure.

Outside of work, Nick enjoys playing rugby, listening to electronic music and spending time with his young family.