AILA Staff

AILA’s hardworking team deliver member services, administer continuing professional development, communicate the work of members to members and the wider community, and implement directives from National Council.

CEO Tim Arnold leads the National Office team in Canberra and the State Managers around the country.

National Office

Tim Arnold, CEO

An accomplished business executive with experience in the sport, not-for-profit, government and business sectors, Tim joined AILA in September 2017. Having held several senior management positions across national organisations previously, his focus will be on working with the Board to review the strategic direction of AILA, develop a communications strategy and review the membership programs. Tim will work to drive the profile and advocacy priorities of AILA and provide leadership to the network of staff across the country.


Prior to working with AILA, Tim spent over a decade in the sports industry working in stakeholder engagement, membership, workforce development, government relations and commercial programs, most recently working as Acting Chief Executive Officer of Touch Football Australia, one of the largest community based sports in the country.



Dimity May, National Manager, Events & Partners

Dimity has worked in a range of marketing and communications roles across the publishing, tertiary and not-for-profit sectors over the past twelve years. After stints working in Sydney and Melbourne, Dimity relocated back to her hometown of Canberra and started at AILA in mid-2017, looking after delivery of the International Festival of Landscape Architecture, the National Landscape Architecture Awards and AILA’s National Partner Program. Dimity is mama to one very busy little boy, with another bub on the way in the second half of 2018.




Catherine Horner, National Manager, Finance

Catherine has been a Chartered Accountant for more than 12 years. After completing a double degree in Commerce and Economics at ANU, she worked in tax and audit for firms in Sydney and Melbourne before travelling overseas. Returning to Canberra, she joined the not-for-profit sector and held finance and compliance roles with Greening Australia and the Australian Council for International Development.





Lucy Sheaves, Executive Administration Coordinator

Lucy started at AILA as a graphic design intern during her double degree of Graphic Design and Communication in Advertising at UC. Since graduation, she has moved to a full-time position to support the Board, committees, and accreditation program, but still enjoys occasional graphic design projects. Loves dogs and has questionable fashion sense.





Raquel Shanis, National Membership Engagement & Marketing Officer

Currently finishing a bachelor degree in International Studies and PR at the University of Canberra (UC) – Raquel aspires to advance her career in Communications/Marketing. She has previous experience in a recruitment & training role for a modelling agency and is now responsible for membership engagement and media/PR activities within AILA’s National Office. Further to her experience at AILA, Raquel has experience in event organization volunteering time to the UN Women National Committee in Canberra to plan International Women’s Day 2018. Raquel enjoys socializing, travelling and hip hop music (only the real stuff).




State Managers

Margot Streater, NSW State Manager

Margot has an extensive background in sales, marketing and business events predominantly in the tourism and construction industries as well as owning a business for 6 years. More recently Margot has held senior membership and sponsorship roles with peak industry bodies including the NSW Business Chamber, Property Council of Australia and in the financial services industry. Margot looks forward to working with the members in aligning the AILA strategy, raising the profile of the industry and growing the membership.




Felicity McGahan, VIC State Manager

Felicity has around 12 years experience working in the not-for-profit sector. This includes two membership based institutes representing professions. She was the Victoria member services manager at the Australian Institute of Architects for four years where she enjoyed working in membership recruitment, retention and engagement. Her most recent role was working in a national migration support team at Australian Red Cross where she worked closely with the Department of Immigration advocating on behalf of asylum seekers. She enjoys travel and returns to Adelaide where she grew up and Ireland as much as she can where her husband is from.




Martha Delfas - VIC Events & Development Manager 

Martha Delfas is an all-round marketing professional with over 20 years experience in public relations, event management and sponsorship. She has held national senior roles in both corporate and not-for profit sectors at Kmart, Myer and Cancer Council Australia. Her consultative business style has been sought by organisations such the NSW Department of Family and Community Services where she created and successfully negotiated a growing portfolio of sponsors that included Woolworths, News Corporation, Commonwealth Bank and Harvey Norman. Having returned from Sydney to Melbourne, Martha’s strong interest in best practice sponsorship and special events have proven a great asset for building and nurturing AILA’s network and partners in Victoria.




Georgina Scriha, QLD State Manager

Georgina graduated from Griffith University with a Bachelor of Arts/Bachelor of Commerce and has over 12 years experience working in membership associations. Her past positions at the Taxation Institute of Australia and the Royal Australian College of General Practitioners saw her focus on member engagement, events, education and sponsorship. Georgina grew up in the regional Queensland town of Mackay before relocating to Brisbane. She is a mum to two very happy, active little boys.​




Tannelle Leathley, QLD Project Support Officer

Tannelle has spent the past 9 years working in the not-for profit sector. She has enjoyed working in various departments at the Royal Australian College of General Practitioners, giving her experience with marketing and events, accreditation, membership and CPD. She has now joined forces with the AILA Queensland Chapter Manager, Georgina Scriha, to assist with administrative tasks and events. Tannelle has two cheeky little monkeys and they spend their spare time exploring the outdoors together.




Sally Bolton, SA State Manager

Sally completed a Bachelor of Architecture at The University of Adelaide. Her career has included practicing as an architect and also working to support the design professions in advocacy, professional development and member engagement roles, most recently at the Australian Institute of Architects in SA. 





Carmen Williams, WA State Manager

Carmen has been a Marketing and Events Manager for over 18 years. She has a passion for Marketing and Development in the not for profit sector, she delivered the National Awards, competitions and prizes for the AIA for nearly 3 years and has worked at Cancer Council and Playgroup WA in Perth. She has a Bachelor of Commerce with a double major in Marketing and Tourism Management. She loves spending time outdoors with her young family and enjoys travelling both in Australia and overseas.



Tweets Tweet to @AILA_National