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Senior Administrative Assistant

  • Toronto, ON
  • Hybrid
  • Posted Sep 19, 2026
  • 1 position

$60,000–$70,000 / year

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Employment type
Full-time
Experience level
Mid-level · 3+ years
Minimum education
Bachelor’s degree
Posting language
English
Working hours
40 hours per week
Office presence
5 days per week
Seniority
Associate

Job summary

The Senior Administrative Assistant will manage day-to-day office operations, facilities coordination, and provide administrative support to executives and senior management. They will also contribute to process improvements and handle various operational projects to ensure an efficient workplace.

Job details

Location: North York, Toronto, ON, On-site 5 days per week to start, with potential for a hybrid arrangement if extended Language: Strong written and spoken English communication skills required Background Check Requirement: Three professional references, criminal background check and credit check required About the Opportunity We’re hiring a Senior Administrative Assistant to join an established professional services organization in North York. This opportunity is ideal for someone who enjoys variety and wants to play an important role in keeping an office organized, efficient and running smoothly. Working closely with executives and senior management, you’ll take on a mix of office administration, facilities coordination and administrative support. You’ll have the autonomy to manage day-to-day priorities, coordinate with internal and external partners and contribute to projects that support an efficient and professional workplace. What’s In It for You • Gain valuable exposure working closely with executives and senior management. • Take ownership of varied responsibilities across administration, office operations, facilities and special projects. • Join a professional, collaborative environment where initiative, reliability and strong execution are valued. Your Responsibilities • You’ll support day-to-day office operations and help ensure the workplace remains organized, efficient and well maintained. • You’ll coordinate facilities-related needs, maintenance and service requests while working with external vendors and service providers. • You’ll provide administrative and project support to executives and senior management, helping priorities and deliverables stay on track. • You’ll support workplace procedures, documentation and operational requirements, including facilities-related compliance. • You’ll prepare communications, reports and other administrative materials as needed. • You’ll contribute to process improvements and take ownership of ad hoc administrative and operational projects. Skills and Qualifications • 3+ years of experience in office administration or a similar administrative role. • Post-secondary diploma or degree in Business, or equivalent. • Strong Microsoft Office skills and confidence learning and working with technology. • Excellent written and verbal communication skills, with a professional and approachable style. • Strong organizational, time-management and problem-solving skills with excellent attention to detail. • A proactive, resourceful and confident approach, with the ability to work independently and follow priorities through to completion. • Reliable, punctual and adaptable, with the ability to manage multiple priorities in a professional environment. Why Partner with Altis If you’ve never worked with a staffing agency before, we make it easy. We work with top employers across Canada who have great jobs to fill, each vetted and verified by our team. When you apply for a job with Altis, we get to know you as a candidate and learn what your strengths are. Then, if you’re a solid match, we handle all the logistics, advocating for you as a candidate for the role, providing access to coaching and connecting you directly with the hiring manager. And rest assured, all our services are free of cost for candidates.

What you’ll do

The Senior Administrative Assistant will manage day-to-day office operations, facilities coordination, and provide administrative support to executives and senior management. They will also contribute to process improvements and handle various operational projects to ensure an efficient workplace.

Requirements

Candidates must have at least 3 years of experience in office administration or a similar role and possess a post-secondary diploma or degree in Business. Strong Microsoft Office proficiency and excellent written and verbal communication skills are required.

Listed skills

  • Time management · Preferred
  • Problem solving · Preferred
  • Administrative Support · Preferred
  • Attention to detail · Preferred
  • Documentation · Preferred
  • Communication · Preferred
  • Reporting · Preferred
  • Office Administration · Preferred
  • Microsoft Office · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

  • Office Administration
  • Facilities Coordination
  • Administrative Support
  • Microsoft Office
  • Communication
  • Time Management
  • Problem-solving
  • Attention To Detail
  • Project Support
  • Vendor Management
  • Documentation
  • Operational Requirements
  • Reporting

Job areas

  • Administrative
  • Management & Leadership
  • Finance & Accounting
  • Consulting

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