Senior Administrative AssistantLocation: Markham, ON Duration: 2-3 months, potential to extend – immediate joiningSchedule: Full-Time, Monday–Friday, 8am – 4pmCompensation: $30-36/hr plus vacation pay, paid weeklyWe are currently seeking top talent for an experienced Senior Administrative Assistant job opening in Markham, Ontario in the corporate office of a medical setting. In this full-time, interim opportunity, you will be responsible for providing a high level of administrative support to a number of Directors with various support functions – note this position is a fully on-site role. As an experienced Administrative Qualified, you will use your skills and experience to provide executive level support functions while multi-tasking and prioritizing the work and needs at hand. This role is ideal for someone who thrives in a fast‑paced environment, handles confidential information with discretion, and enjoys making an impact across multiple portfolios.What You’ll Do:Provide high level calendar management with emphasis on proactive planning, scheduling internal and external client meetingsPrepare agendas, attend the meetings and take minutesDraft and prepare correspondence, emails, reports and create presentations with detail and timelinessManage expenses, enter and process expense reports with accuracySupport project documentation, funding letters, and departmental initiativesHandle procurement requests, reimbursements and basic financial documentationMaintain program records, manuals and administrative systemsProvide office coordination functions including payroll support, filing,



and data entryOther duties as assignedWhat You Bring:At least 5+ years of senior level Administrative Assistant experienceDegree in business/administration (or related)Strong MS Office skills (Word, Excel, PowerPoint, Visio, Publisher); Meditech is a plusExcellent communication, organization and problem-solving abilitiesHigh level of professionalism, judgment and attention to detailA positive, can-do and self-motivated worker with the ability to work together as a teamA high level of trust and discretion at all times; strong and confident personality to keep to the business functions of the roleSomeone who flourishes in a diverse workplace and takes pride in their role within the team/organization. Our client offers a passionate, diverse, busy and dynamic work setting working for driven professionals whose focus it is to give back and provide the tools and support for the health and wellbeing of their clients. If you are interested in this interim Executive Assistant job opening in Markham, ON and meet the minimum qualifications as listed, do not wait to apply. Please note this is an interim temporary role that is on-site and would require full-time, business hours starting as soon as possible.Vacancy Status: This posting is for an existing vacancy.At Adecco our purpose is simple: to make the future work for everyone. We live our values, Passion, Collaboration, Inclusion, Courage, and Customers at Heart, by fostering a workplace where diversity is celebrated and every voice matters. We encourage applications from individuals of all backgrounds and identities. Together, we’re making the future work for everyone.

📌 Senior Administrative Assistant - $30 - $36 An Hour (Markham)
🏢 Adecco
📍 Markham