Administrative Assistant

Location: Mississauga, ON (On-site, Monday to Friday, 5 days per week)
Language: Strong written and verbal communication skills in English required
Background Check Requirement: Criminal background check and professional references required

Our client is a respected, established organization looking for an Administrative Services Administrator to support an important operational initiative. This position is focused on providing administrative coordination and investigative support during a period of organizational transition, helping ensure processes remain accurate, organized, and on track.

Working alongside an experienced administrative team, you'll contribute to projects that require strong attention to detail, problem-solving, and the ability to manage information effectively. This opportunity is well suited to someone who enjoys working behind the scenes to keep operations running smoothly while supporting continuous improvement.

What You'll Gain

• Build valuable experience within a large corporate organization while collaborating across multiple departments
• Join a supportive team that values communication, professionalism, and shared success
• Opportunity for contract extension or long-term employment based on business needs and performance
• Free onsite parking and a consistent Monday to Friday schedule that promotes work-life balance

Your Responsibilities

• Support business operations by coordinating administrative tasks, tracking project progress, and maintaining organized documentation.
• Assist with information gathering and research by reviewing records, verifying details, and preparing summaries to support business decisions.
• Maintain accurate electronic and paper filing systems, ensuring records are organized, up to date, and handled confidentially.
• Draft emails and other correspondence, respond to inquiries, and monitor follow-up activities to keep work moving efficiently.
• Use multiple computer systems to enter, update, and reconcile information while maintaining data accuracy across platforms.
• Apply basic math skills to verify information, complete reconciliations, and interpret numerical data within reports.

Skills and Qualifications

• At least 1 year of administrative or office support experience
• Proficiency with Microsoft Office, including strong Excel skills
• Excellent written and verbal communication with a professional approach
• Strong organizational skills and exceptional attention to detail
• Confidence working with data, reports, and basic numerical information
• A positive attitude, adaptability, and a willingness to learn in a fast-paced 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.

We appreciate the time and effort all applicants invest in their submissions. Please note that only candidates shortlisted for this role will be contacted directly. However, your profile will remain under consideration for future opportunities that align with your experience and career goals.All qualified applicants will receive fair consideration for employment. We welcome individuals of all backgrounds, experiences, and identities including those who identify as women, members of racialized groups, Indigenous Peoples, persons with disabilities, and 2SLGBTQIA+ communities. If you require an accommodation, please review our accessibility policy and reach out to our accessibility officer with any questions. Our human recruiters review all applications and always make the final hiring decision. On occasion, we also use AI-assisted tools to help review applications.