Management Team

WE'RE HIRING! We are currently seeking to fill the role of Vice President & two eager Marketing Volunteers! If interested, please see the role descriptions and application information here.

Kimberly Rafuse


Kimberly is passionate about sustainable development, corporate social responsibility, climate change and risk management.  

She currently works for a large global reinsurance company and her work focuses on industrial risk control, and she is also involved with a consultancy on climate change and financial institutions.  She has worked with industry, non-profits, and in consulting. She returned to Toronto from Calgary in 2015, and was previously a Board Member of Connecting Environmental Professionals (CEP) Calgary.

She has a Bachelor's of Engineering, Chemical/Environment, and a Master's in Environmental Security.  

Crystal Vella

Vice President

Crystal is an emerging leader in sustainability and climate change management. As an Analyst at The Delphi Group, she provides research, analytical and strategic support in climate change policy, corporate sustainability and climate risk management strategy.


She holds her Master of Environment and Sustainability from the University of Western Ontario and is a graduate of Brock University (BAHons) and Niagara College’s Environmental Management and Assessment post-graduate program.


In her spare time, you can usually find her with a great read in hand or enjoying everything the outdoors has to offer when the weather is nice.

Madeleine Lee,

Director, Marketing

Madeleine is an eager newbie to the world of environmental stewardship. Having completed her Bachelor of Commerce from the University of Guelph, she comes from a background in marketing, advertising and marketing strategy. She currently works at a consumer experience agency as a Senior Account Manager. 

She is driven to make terms like circular economy and sustainable development top-of-mind for the average consumer, and wants to live in a world where consumers’ everyday decisions put the environment first.

An experience addict, she tries to spend every moment of her spare time outdoors or trying new things.

Sandy Creighton

Director, Member Relations

Sandy works as Data Director at Pivot Strategic Consulting, a policy consulting firm based in Toronto. At Pivot, Sandy manages the development of an online microtargeting mapping tool used by environmental organizations to aid their campaigns and lobbying efforts. Prior to working at Pivot, Sandy worked as Outreach Coordinator at GreenPAC and Report Analyst at ERIS. Sandy holds a Bachelor’s degree in Environmental Studies and Psychology and a post-grad certificate in Applied Digital Geography and GIS from Ryerson University. 


Sandy believes in the importance of creating lasting interdisciplinary connections, especially in the field of environmentalism.  In her spare time, she enjoys traveling, attending speaker events, and playing with her pets. She is passionate about social change, waste management and responsible urban planning.

Yvonne Ho

Director, Events

Yvonne is an environmental professional with a background in environmental science and sustainability. She has several years of work experience in the environmental non-profit sector— carrying out research on key environmental issues, writing reports and educational articles, executing membership development and outreach initiatives, as well as implementing marketing and communications plans for campaigns. She has a keen interest in renewable energy, impact investing, circular economy, and sustainable development.

Prominent not-for-profit environmental organizations she has volunteered at and worked for include Sierra Club, Environmental Defence, Ontario Sustainable Energy Association, Toronto Environmental Alliance, and Pollution Probe. Yvonne is motivated to work together with like-minded people and organizations towards greater environmental justice and more urgent climate action.

Mayur Mukati

Director, Career Development

Mayur has undertaken academic and professional endeavors in seven countries spanning three continents. He has work experience in Fortune 500 companies in chemical and pharmaceutical industries, an NGO in sustainable urban development research, as well as e-commerce development. He has also spearheaded a small non-profit NGO in child education and curriculum development in the past. 

He is a Chemical Engineer, LEED Green Associate, and a Dean’s List Scholar from the University of Toronto’s MSc. in Sustainability Management. Currently, Mayur provides market intelligence at MaRS Discovery District to Canadian clean technology ventures and international utility companies. Additionally, he is a part-time graduate student in Financial Engineering. 

He was nominated as 2016 Top 10 Nudge Global Leaders in the Netherlands among 80 young professionals in sustainability from Unilever, Danone, Heineken, BNP Paribas, and others. In his spare time, Mayur enjoys watching movies and documentaries, playing bowling and board games, and eating out with friends.


Shubham Rusia

Director, Finance

Shubham comes from an engineering background and has worked with a Big 4 consulting firm in the past. He recently completed his MBA from Rotman School of Management and is currently working at TD. During his free time he enjoys exploring new places to eat and reading on current events.

Leor Rotchild

Leor has a passion for using business as a force for good and his super power is getting the right people to the table to get things done. 

After several years in the energy sector, Leor co-founded a BCorp certified startup business that provides zero-waste management and carbon-neutral solutions to large music festivals and sporting events. As of May 2017, Leor is now Executive Director of CBSR

He consults to corporations, non-profit organizations and governments on communications strategy, stakeholder outreach, and social & environmental program development. 

Shawna Weisberg


Shawna is passionate about corporate citizenship and social impact.


She brings this enthusiasm to the Community Investment team at CIBC, where she manages a portfolio of corporate donations across the country, and develops social impact measurement systems for the team. Previously, Shawna spent four years leading a national Employee Donation Campaign for TD Bank, raising over $11 million annually for charities across Canada. She has also managed many Employee Experience and Employee Engagement initiatives.


In her spare time, Shawna has been an artist and illustrator for over 20 years.

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