About us

We've been around the bush - our experts have been in house in local, state and federal government, in universities and non-profits, in Australia's largest banks, and the world largest consultancy groups.

Sabirus was formed to make top-tier advice available to more Australian businesses, government agencies and non-profits.

We apply a multi-disciplinary lens to our work, bringing together a diverse set of experts and skillsets to create effective and holistic solutions.

We don't just deliver reports and fade away - we strive to be trusted advisors, staying with you through your transformation journey.

Marguerite de Sousa

Partner; Co-Founder - Public Policy | Education & Skills | Workforce Planning | Governance and Capability

Marguerite de Sousa brings 20 years of experience in policy development and program management across education, skills, training and workforce.

Marguerite is a respected advisor, who balances a technical eye for detail with the ability to provide strategic and practical solutions for clients. She enjoys working with large and small clients across industries and sectors, relishes solving complex problems and has a passion for building capability in organisations and their people.

Prior to co-founding Sabirus, Marguerite worked with a range of organisations, including in the Commonwealth public service, for State and Federal Ministers, a large public university and, most, recently in management consulting in a big four firm.

Mail: marguerite.desousa@sabirus.com.au

Phone: +61 406 649 553

Partner; Co-founder - Privacy | Information Governance| AI and Technology Ethics

Tim de Sousa brings more than 20 years of experience in privacy, information governance, digital transformation and regulatory compliance across the public and private sectors.

Tim is a trusted advisor who combines deep technical expertise with practical and strategic advice to help organisations navigate complex privacy, governance and technology challenges. He works with government and corporate clients to strengthen compliance, manage risk, enable digital transformation and build trust with customers, stakeholders and the community.

Prior to joining de Sousa Advisory, Tim held senior leadership roles in consulting, financial services and government, including with FTI Consulting, Westpac, the Commonwealth Bank and the NSW Government. He has advised leading Australian and international organisations on privacy, information governance, regulatory compliance and emerging technologies. Tim was recognised in the Apolitical/World Economic Forum Agile 50 and is the recipient of the 2025 IAPP Privacy Vanguard Award (Oceania).

Tim de Sousa

Mail: tim.desousa@sabirus.com.au

Phone: +61 413 248 107

Bronwyn Allen

Practice Lead - Knowledge Management

Bronwyn is a senior information and knowledge manager with over 14 years of experience, including in-house roles with a big four firm, Sydney Water, and the NSW Government Department of Customer Service.

She leads Sabirus' Knowledge Management Practice, supporting Australian organisations to develop knowledge content that is accurate and useable, helping users better understand their information needs, and implementing creative, practical knowledge management solutions to achieve policy objectives.