Sarah Mitchell becomes chief operating officer at Dunton Rainville

She brings over 15 years of corporate strategy and executive advisory experience

Sarah Mitchell becomes chief operating officer at Dunton Rainville
Sarah Mitchell
By Jacqueline So
Jun 02, 2026 / Share

Sarah Mitchell has been named the chief operating officer of Dunton Rainville and its business units.

She will manage operations and oversee the implementation of the firm’s strategic plan to facilitate the alignment of strategic and operational functions. She reports to the firm’s management committee.

Mitchell will also collaborate with Dunton Rainville’s administrative departments on organizational development and performance, especially with regard to governance, finance, human resources, technology, professional affairs, communications, and marketing.

“The legal sector is undergoing a major transformation, and I am excited by the opportunity to contribute to the growth and evolution of an organization that has been firmly established for over 70 years,” she said in a statement. “Throughout my career, I have helped organizations optimize their teams and operations, enhance their brand awareness and market positioning, and implement strategic initiatives that drive growth, innovation, and sustainable performance.”

Mitchell brings over 15 years of corporate strategy and executive advisory experience. She joins Dunton Rainville from Matadora, of which she was president and founder.

She also recorded a stint as Stikeman Elliott’s national director of marketing, communications, and digital; moreover, she was once chief clients and market strategy officer at BCF Avocats d’affaires and Eastern Canada business development manager at Norton Rose Fulbright.

Mitchell worked with AIRMEDIC as corporate development director and with Raymond Chabot Grant Thornton’s strategy, marketing, and communications department, according to LinkedIn.

Dunton Rainville highlighted Mitchell’s legal market knowledge and business acumen as contributors to the development of growth drivers like market positioning, brand awareness, client experience, and change management. The firm also spotlighted her experience in organizational structure optimization.

“Sarah has held strategic roles at major Québec and Canadian law firms, where she has stood out through her collaborative leadership and her ability to transform business visions into tangible results. Her appointment reflects our commitment to precisely aligning our strategic priorities with the needs of our clients and teams,” said Jean-Jacques Rainville, management committee chair. “Her ability to align structures with business objectives will be a major asset in supporting our growth.”

Dunton Rainville confirmed that Mitchell would also work with the firm’s occupational health and safety specialist subsidiary, DR Conseils. She works from the Montréal office.

Dunton Rainville was listed by Canadian Lawyer as one of the Top 10 Regional Law Firms in Quebec this year.

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