Our Team

Andrew Haussegger


Samantha Sinclair

Group Account Director

Rochelle Sanko

Creative Director

Shawn Low

Head of Content & Social

Helen Richards

Commercial Director

Caroline Leslie

Senior Editor & Content Strategist

Tushar Warrier

Senior Marketing Consultant

Mabel Estrella

Principal Consultant

Emma Dickson

Account Director

Natashka Miernik

Account Director

David Stalker

Senior Account Manager

Sam Wales

Marketing Associate

Liam Jeal

Senior Designer

Jessica Johnson

Senior Designer

Omair "Tiny" Ahmed

Senior Content Writer & Strategist

Matt Sprague

Social Media & Content Marketing Specialist

Kathryn Thomason

Content & Social Media Specialist

Emma Westwood

Senior Content Producer

Steve Baker

Content & Podcast Producer

John Tanios

Senior Animation Producer

Carrie Hallman

Automation Lead

Tom Baker

Digital Marketing & Automation Specialist

Alex Langridge

Digital Marketing & Automation Specialist

Tom Ellis

Inbound & Analytics Specialist

Nisha Patel

Senior Web Developer

Jarome Harmsworth

Senior Web Developer

Carmen San Diego

Operations & Finance Specialist

Kate Kapovic

Finance Support Specialist


Accounts Retrievable

Advisory Board

Lindsay Holloway

Lindsay is the Managing Director of William Buck, heading the Executive team who manage the strategic direction of the firm.

Lindsay has broad experience including over 25 years in accounting, taxation, superannuation and audit, which enables him to offer clients a holistic view and provide advice that takes into account all aspects of their affairs. He has extensive experience with manufacturing and professional services clients, as well as consulting on strategic business reviews, board advisory and superannuation.

Lindsay maintains business advisory client services to small and medium enterprise (SME) businesses. His other roles in the practice include heading the Superannuation division and a key involvement in the Wealth Advisory division.

Marc Makrid

Marc Makrid is Managing Director of Marc Makrid & Associates, a leading strategic business advisory established in 1993. He brings business and brand strategic advice to the Green Hat board. He holds board positions with Seeley International, Campion Education (Chairman), Neutrog Fertilisers (Chairman), Lifestyle Bakery (Chairman), Angelakis Seafood (Chairman), FP-AG (Chairman), Cold Logic, Tristar Electrical, PowerHealth Solutions and South Adelaide Football Club.

Prior to his board roles, he held senior executive positions in industry including Director of Marketing at SA Brewing and Deputy Managing Director of Dairyvale Foods.

Tim Brewin

Tim brings significant B2B management and strategy expertise to the board. He has 30+ years’ experience leading and advising C-suite and senior executives in professional services firms across the IT and Human Resources industry sectors.

At Hewlett Packard, he was APAC regional director for their strategic Microsoft business. At Heidrick and Struggles, he advised boards and CEOs in the pursuit of C-suite talent for large enterprise and government roles.

Tim is a people-person blended with commercial savvy. He has a personal passion for people development and motivating teams and individuals to perform at their optimum. In addition to his board role, he operationally assists Green Hat’s management team in the development of our people and our culture – working with the MD and team leaders to make Green Hat a great place to work and one where every employee would recommend others to join.

Jesus Requena

Jesus Requena is a tech-savvy digital marketing entrepreneur with broad experience across customer experience (CX) and the automation of marketing. He strategises with what is possible with marketing tech and data and gets his ‘hands dirty‘ in uncovering new insights. He designs lifecycle automation and growth hacking solutions for businesses looking for digital-fuelled growth and revenue acceleration. Whilst he has a passion for tech, he brings commercial sensibility to the board’s planning.

Throughout his professional career he has worked across Europe and APAC assisting tech start-ups, B2B agencies and global blue-chip brands. His main driver has always been to make a difference to the ultimate end-user and for his clients offering the product or service. He is presently a Director at Unity.


We’re helping Kiva help others

Kiva is a non-profit organisation with a mission to connect people through micro-finance lending to alleviate poverty.

We like what they do. We support Kiva borrowers in the developing world by lending directly from Green Hat, and on behalf of our clients.

Kiva enables individuals to lend as little as $25 to help create opportunity around the world. Kiva envisions a world where all people – even in the most remote areas of the globe – hold the power to create opportunity for themselves and others.

100% of every dollar we lend on Kiva goes directly towards funding loans. We like that too. Kiva is primarily funded through the support of lenders making optional donations and also raises funds through grants, corporate sponsors and other philanthropic foundations.

Join our Kiva team