MAC LLP is a full-service public accounting firm in Waterloo Region that has been in business for over 35 years. We deliver services to a wide range of clients including owner-managed businesses, not-for-profit organizations, charities, social housing, and individuals. We pride ourselves on our ability to do so in a way that is both skilled and personable.

Join Our Team
We are excited to welcome a high performing Executive Assistant to our amazing team. Working primarily from our Elmira location, this is an 18-month contract opportunity with the strong possibility of a permanent role. Unlike a traditional Executive Assistant role focused primarily on calendar management, this position plays a key role in the client engagement process. You will act as a trusted partner to our professionals, helping ensure a seamless experience for clients from the beginning to the completion of their engagements.

Key Responsibilities
Coordinate administrative aspects of client engagements from initiation through final delivery, including document collection, tracking deliverables, and maintaining timelines
Prepare, review, and proofread engagement packages, financial statements, tax returns, correspondence, and other client-facing documents for accuracy, completeness, and skilled presentation
Draft and coordinate correspondence with clients, the Canada Revenue Agency (CRA), legal professionals, financial institutions, and other third parties
Exercise professional judgment to identify issues, elevate concerns, and determine appropriate next steps
Collaborate with partners, managers, and engagement teams to meet deadlines and client expectations
Maintain client records and engagement documentation
Contribute to process improvements that enhance efficiency, consistency, and client service

Key Requirements
Post-secondary education in business administration, office administration, accounting, or a related field preferred
Experience in an Executive Assistant, Senior Administrative Assistant, or similar role within a public accounting, legal,



financial services, or other professional services environment preferred
Strong attention to detail, proofreading, and document review skills
Sound judgment, critical thinking, and problem-solving abilities
Excellent communication, organizational, and time-management skills, with the ability to manage multiple priorities
Proficiency with Microsoft 365; experience with CaseWare and CCH iFirm is an asset

What Makes Someone Successful in This Role?
The ideal candidate is naturally curious, highly organized, and enjoys solving problems. They are comfortable reviewing complex information, asking thoughtful questions, and using professional judgment to ensure work is completed accurately and efficiently. They take ownership of outcomes, anticipate needs, and build strong relationships with both clients and internal team members. If you are looking for a meaningful administrative career where your critical thinking and attention to detail make a direct impact on client service, we would love to hear from you.

What We Offer
Flexible Summer Fridays (offices are closed)
Awesome benefits package which includes healthcare and lifestyle spending accounts
Competitive compensation and RRSP matching
Vacation + lieu for time worked over standard hours
Free coffee, tea and snacks
Catered meals during tax season and a year-round meal allowance
Loads of fun company events for both staff and their families
Onsite gym at our Waterloo office with free access for all staff
An amazing wellness program with wellness challenges, resources, onsite treatments and more

Compensation Range for Role: $53,000-$63,000 annually

MAC LLP is committed to the principles of the Accessibility for Ontarians with Disabilities Act (AODA). As such, we strive to make our recruitment process as accessible as possible and provide accommodations as required for candidates with disabilities. If you are selected to participate in the recruitment process, please advise if you require accommodation for a disability and we will work with you to meet your needs.

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📌 Executive Assistant (Ontario)
🏢 MAC
📍 Ontario