Support client service and Microsoft Suite administration as a Winter 2027 Co-op Administrative Assistant in Markham, working onsite five days weekly.
Doane Grant Thornton offers this co-op opportunity within a large Canadian skilled services firm. You will support stakeholders, their clients, and growing practices through scheduling, correspondence, billing administration, and relationship management software. The work requires strong organization, communication, judgment, and confidentiality.
Key Responsibilities: Schedule meetings and prepare information for stakeholders and clients
Manage incoming correspondence and ensure required follow-up actions
Draft and format client letters, reports, presentations, and spreadsheets




Maintain opportunities and client records in business systems
Prepare invoices and track expense claim submissions
Requirements: Advanced working knowledge of Microsoft Suite
Strong attention to detail and organizational skills
Excellent communication and interpersonal skills
Ability to manage multiple priorities and tight deadlines
Confidentiality, initiative, adaptability, and occasional overtime availability
Bring client service, administrative coordination, and Microsoft Suite expertise to Doane Grant Thornton’s Markham team this winter.

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📌 Administrative Assistant Co-op Markham (Ontario)
🏢 Doane Grant Thornton
📍 Ontario