Consulting & Coaching

Meet our Consulting Directors


Liz Weaver

Practice Area: Collaborative Leadership

Liz Weaver is the Co-CEO of Tamarack Institute where she is leading the Tamarack Learning Centre. Liz is well-known for her thought leadership on Collaborative Leadership and Collective Impact and is the author of several popular and academic papers on those topics. She is a co-catalyst partner with the Collective Impact Forum and collaborates with Inspiring Communities New Zealand and Collaborating for Impact, Australia. Liz is passionate about the power and potential of communities getting to impact on complex issues. 

Areas of Expertise:

  • Collective Impact
  • Collaborative Leadership
  • Evaluating Impact
  • Community Innovation

Liz's Office Hours

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Wednesdays 2:00–4:00 p.m. EST – 15-minute free consultations

Book a 15-minute session with Liz



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Danya Pastuszek

Practice Area: Measurement Strategy and Strategic Planning

Danya Pastuszek is the Co-CEO of Tamarack Institute and the Director of Vibrant Communities. She spent ten years as a local intermediary, supporting school-based, neighbourhood-based, and regional outcomes-focused partnerships, in both operational leadership and partnership facilitation roles. She has also worked as a service provider with refugees and with youth and adults impacted by the criminal justice system. In her coaching and facilitation, Danya draws from experience with communities. She joins together racial equity, continuous improvement, adaptive leadership, liberatory design, and social psychology principles.

Areas of Expertise:

  • Collective impact and backbone operations
  • Measurement strategy and continuous improvement
  • Strategic planning and budgeting 

Danya's Office Hours

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Tuesdays 2:00–4:00 p.m. EST– 15-minute free consultations

Book a 15-minute session with Danya


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Sylvia Cheuy

Practice Area: Collective Impact

Sylvia is a Consulting Director of the Tamarack Institute’s Collective Impact practice area. She is passionate about community change and what becomes possible when residents and various sector leaders share an aspirational vision for their future. Sylvia believes that when the assets of residents and community are recognized and connected they become powerful drivers of community change.

Areas of Expertise:

  • Collective Impact
  • Community Engagement
  • Community Innovation

Sylvia's Office Hours

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Tuesdays 2:00–4:00 p.m. EST – 15-minute free consultations

Book a 15-minute session with Sylvia



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Lisa Attygalle

Practice Area: Community Engagement

In her role at Tamarack, Lisa works with cities, organizations and coalitions to improve the way they engage with their communities. Over the last seven years her work has focused on creating authentic engagement strategies and building the culture for engagement, integrated communications planning, and the use of technology and creativity for engagement. Lisa constantly advocates for simplicity in infrastructure, frameworks and design and loves applying the principles of marketing, advertising, loyalty, and user experience to community initiatives.

Areas of Expertise:

  • Community Engagement
  • Community Innovation
  • Collective Impact

Lisa's Office Hours

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Thursdays 10:00 a.m.–12:00 p.m. EST – 15-minute free consultations

Book a 15-minute session with Lisa




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Myriam Bérubé

Focus Area: Québec and French-speaking communities

Myriam is the Consulting Director for Quebec at the Tamarack Institute. She’s passionate about community innovation and development and brings her understanding of the diversity of experiences made in Quebec into Tamarack’s five interconnected areas of practices (collective impact, community engagement, collaborative leadership, community innovation and evaluating impact) leading to community change. She believes that we can accelerate our effectiveness by learning from one another, thus increasing our social impact and even inspiring others beyond our borders.

Areas of Expertise:

  • Participatory Grantmaking
  • Collective Impact
  • Community Innovation

Consultations aussi disponibles en français.

Myriam's Office Hours
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Wednesdays 1:30–2:30 p.m. EST – 15-minute free consultations

Book a 15-minute session with Myriam

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Jean-Marie Chapeau

Practice Area: Evaluation and Strategic Learning

Jean-Marie Chapeau is the Consulting Director Evaluating impact at the Tamarack Institute. Deeply convinced that local and collaborative approaches are an essential lever in solving complex social issues, Jean-Marie has been involved in community development and social change for 25 years. Jean-Marie mobilizes his experience, passion and curiosity to promote evaluation as a tool for empowerment in communities and to accompany individuals and groups in their learning processes. He is constantly seeking to build bridges between change-makers involved in inventing local solutions to poverty and exclusion.

Areas of Expertise:

  • Participatory Evaluation
  • Community Engagement
  • Community Innovation
  • Collective Impact
  • System Mapping

Consultations aussi disponibles en français.

Jean-Marie's Office Hours
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Thursdays 3:00–4:30 p.m. EST – 15-minute free consultations

Book a 15-minute session with Jean-Marie 

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Sonja Miokovic

Practice Area: Community Innovation

Sonja Miokovic is the Consulting Director of the Tamarack Institute’s Community Innovation Area. She is a dynamic educator, social scientist, and innovator with over 16 years of experience in the sector. Having lived, worked, and played in over 80 countries, she has a broad spectrum of international experience that cuts across the public, private and civil society sectors. Sonja is a long-standing advocate for community-led innovation and development. Known for bringing larger-than-life initiatives into being, Sonja thrives on helping communities connect the dots in innovative ways to tackle persistent problems.

Areas of expertise:

  • Community Innovation
  • Co-Design
  • Community Engagement

Sonja's Office Hours
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Wednesdays 9:00 a.m.–11:00 a.m. EST – 15-minute free consultations

Book a 15-minute session with Sonja

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Raïsa Mirza

Focus Area: Behaviour Change & Design for Social Change

Raïsa is Associate Director of Community Innovation Fund-Communities Building Youth Futures (CBYF) and a Consulting Director at Tamarack Institute's Learning Center with a focus on Community Innovation & Engagement.

She is a human-centered designer, researcher, facilitator and socially engaged artist with experience implementing and co-creating participatory systems strengthening programs in over 20 countries in a variety of sectors and roles supporting the Sustainable Development Goals. In her work, she brings a behavioral sciences+design lens to support sustainable innovations through experimentation based on user needs. Her previous roles have often straddled participatory research and co-creation, capacity building of leaders in communities and governments, impact measurement, storytelling, partnership building, and knowledge mobilization.

Areas of Expertise:

  • Behaviour Change
  • Design for Social Change (Design Thinking, Service Design)
  • Community Innovation
  • Community Engagement
  • Participatory Foresight

Consultations aussi disponibles en français.

Raïsa's Office Hours
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Wednesdays 9:30 a.m.–11 a.m. EST – 15-minute free consultations

Book a 15-minute session with Raïsa Mirza 



View Raïsa's Full Bio

Jeff Doner

Practice Area: Digital Sales, Engagement & Learning

Jeff Doner leads the Marketing and Communications practice at Tamarack as Director, Digital Sales, Engagement & Learning. Through transformative strategy development, thought leadership, and operational optimization, Jeff’s work enables the Tamarack community to advance digital intelligence and impact. As a Professor with the School of Communications, Media, Arts, and Design at Centennial College, Jeff develops and delivers curriculums focussed on digital enablement through transformative capability building. He provides workshops, training, and consulting services to a range of community collaboratives.

Areas of Expertise:

  • Digital Innovation
  • Marketing Communications
  • Community Engagement
  • Interactive Narrative 
  • Brand Activation

Jeff's Office Hours
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Fridays 10:00 a.m.–12:00 p.m. EST – 15-minute free consultations

Book a 15-minute session with Jeff 

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What our clients say about us:


"I cannot thank you enough for your time. I was (and still am) shocked by how much I learned within 15 minutes. You not only gave me an in-depth understanding on community engagement but also counsel on how to move forward and apply myself."


"Tamarack’s expertise has allowed me to re-evaluate the morale behind my work, making me ask myself, 'Am I doing the right thing?' rather than simply doing things right... I [have] a renewed energy, a sense of hope for the future, and the motivation to build a happier community back home.”

Michelle Lopes, Town of Innisfil


“Tamarack has a long-standing reputation for its ability to convene community leaders and organizations in online learning communities, where people can gather, learn and share with each other. Tamarack brings great value and expertise to the community change sector.”

Bill Morris, United Way Centraide Canada


Tamarack is an outstanding organization with a track record in the field of community change and we recommend them based on our long-standing partnership and their record as a partner and
leader in the field.”

Jayne Engle, The McConnell




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Learn More:

Interconnected Practices Wheel - Simplified

Build Capacity in the Five Interconnected Practices for Community Change


Discover the 5 Practices

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Bring a Customized Workshop to Your Community


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Learn How Past Clients Are Making an Impact



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The Tamarack Advantage

Tamarack’s Learning Centre exists to empower community changemakers to achieve greater impact.

We draw upon our 20 years of experience leading community change and advancing practice to support municipalities, funders, non-profits, and community leaders through on-demand coaching and consulting, in-person and digital training, and by offering resources, tools, and the latest thinking to guide change efforts. 

Investing in Tamarack Institute Consulting Services has the following benefits:

  • Co-Designed Approach: All consulting services are customized and co-designed with the client ensuring outcomes that meet client needs

  • Content Knowledge and Expertise: Tamarack Directors are respected international thought leaders who regularly research, test and publish new content

  • Experience in Practice: Tamarack Directors bring practical experience and skill to translate the theory of community change into action

  • An Engaged Network: Tamarack leverages our global network of over 40,000 community change practitioners to access proven approaches to address a range of complex issues in creative and innovative ways

  • Investing in Building Capacity: Investing in Tamarack Consulting Services contributes to growing the capacity of the field as all consulting dollars are re-invested in developing new resources and tools that are available to all in our Learning Centre