Big Leaders is a group of young professionals who are passionate about supporting Big Brothers Big Sisters of Toronto’s mission.
Siobhan Calderbank is an award-winning keynote speaker, leadership strategist, and Talent & Human Resources Executive with more than 20 years of experience transforming organizations, building inclusive cultures, and developing diverse leadership pipelines. Currently serving as Vice President, Talent & Performance Management at Element Fleet Management, she is recognized for leading large-scale organizational transformation, advancing talent and leadership strategies, and helping organizations build high-performing, future-ready teams.
Recognizing the need for greater access to mentorship and leadership development, Siobhan is dedicated to empowering women and youth, particularly those from underrepresented communities, through coaching, career development, networking, financial aid, and leadership-building opportunities. Her commitment to creating pathways for others to succeed is reflected in her extensive mentorship, community leadership, and advocacy efforts focused on supporting youth, women, newcomers, and emerging leaders.
As a globally recognized speaker, Siobhan has inspired audiences from more than 70 countries through conferences, corporate events, and leadership forums. She is a published author and contributor featured alongside influential thought leaders including Oprah Winfrey, Maya Angelou, John Lewis, and Deepak Chopra. Her thought leadership on leadership, change management, inclusion, and talent development has been featured across numerous publications and media platforms. Her voice has been featured on ABC, CBS, NBC, FOX, and CW, and she has appeared on Reuters and Nasdaq billboards in Times Square, as well as Planet Hollywood in Las Vegas.
Siobhan has held several leadership and advisory roles supporting diversity, inclusion, mentorship, and community development initiatives. Her contributions have been recognized through numerous honours, including being named one of the Top 100 Accomplished Black Canadian Women, receiving the Women of Inspiration Award for Diversity and Inclusiveness, and being recognized as one of the Top 100 Black Women to Watch in Canada.
She holds a Master of Arts in Leadership from Royal Roads University, a Certificate in Advanced Human Resources from Queen’s University, and a Bachelor of Commerce in Information Technology Management from Toronto Metropolitan University. Through her professional leadership and community service, Siobhan remains committed to helping individuals realize their potential and creating opportunities that enable future generations to thrive.
Ada is an Account Manager at Edelman with over six years of experience in public relations, specializing in strategic programs and client relationships for technology clients. A former mentee of Big Brothers Big Sisters Toronto (BBBST), Ada has been a passionate advocate for mentorship, serving as a spokesperson and fundraising committee member to support the organization’s mission. She combines her professional expertise with her dedication to storytelling to drive meaningful impact for her clients and community.
Eric is a licensed lawyer with the Law Society of Ontario and the managing associate of Spadafora Johnson Lepore LLP – Vaughan. Prior to joining the SJL team, Eric worked as a solo practitioner. Eric joined the SJL team in January 2023 where he manages clientele from all over the GTA and between both the Sault Ste. Marie and Vaughan offices. Eric serves his clients as a general practitioner with emphasis on corporate, commercial, real estate, wills, and estates law.
Eric has always had a passion for giving back to his community and volunteering with organizations such as Sick Kids and Villa Leonardo Gambin, as well as various mentorship roles through university and law school. Additionally, and most importantly, Eric was previously a Big for BBBST through their group school program and has renewed this relationship as a Big Leader.
As a proud member of the Big Leaders group with Big Brothers Big Sisters of Toronto, I bring my experience as a marketing professional in the financial and insurance industries, Big Brother mentor, and community advocate to create impactful opportunities for youth. Passionate about inclusivity and sports, I serve on the board for Toronto Playgrounds Baseball and as a house league coach. Together, we’re building a brighter future!
Candice Bizimana is a communications professional with a decade of experience spanning multiple organizations and continents. After relocating to Toronto, Canada, she felt inspired to give back to her community and became a Big Sister with Big Brothers Big Sisters of Toronto. For the past three years, she and her Little, Shaolyn, have built a bond filled with fun, creativity, and friendly competition. Whether strategizing over card games, bringing imaginative projects to life through arts and crafts, or finding their balance on the ice as they learn to skate. Candice is excited to deepen her impact by joining the Big Leaders committee and supporting BBBST in a new way.
Cassandra (Cass) Chettle is the Manager of Community Investment at Scotiabank where she is responsible for leading and deepening relationships with over 200 charitable partners to drive social impact across Scotiabank’s global footprint. In her free time, Cass is passionate about cooking, crafting, and volunteering as a Big Sister with Big Brothers Big Sisters of Toronto.
Born and raised in Toronto, I have been working in Sport since 2014. I graduated from the Humber College’s Sport Business Management program in 2014. Since then, I have held roles with Ontario Soccer in the Coach Education department from 2014 – 2018 (had internships and part-time work with Ontario Soccer from 2013). After leaving Ontario Soccer, I went on to work for two clubs, Newmarket Soccer Club and the Erin Mills Soccer Club as their General Manager. In those roles acquired in-depth knowledge of how to operate a non-profit organization and work directly with a board of directors. I returned back to Ontario Soccer in March of 2023 in the role of Manager, Facilities Administration. In addition to this, I do contract work with Canada Soccer and have held various roles with the Senior Men’s and Youth National Teams.
Hello, My name is Dylan Saunders and I’ve been a big brother for 13 years with two matches over that time. I have thoroughly enjoyed the opportunity to make a positive and lasting impact in someone else’s life through the mentorship program and have undoubtedly felt an impact in my own as a result. I look forward to contributing to the organization in a new capacity and am excited to watch the organization increase its capacity to make positive change in “Littles” and “Bigs” alike.