Office Administration

Job Type: Temp to perm
Duration: 6-month contract, will convert to permanent based on performance
Location: Mississauga, ON (On-site)
Language: Strong written and spoken English required
Background Check Requirements: Criminal Record Check and employment references required

About the Opportunity
This is an exciting opportunity for a highly organized and proactive Leasing and Office Administrator to support a busy corporate office environment. Working across commercial leasing, property administration, accounting, and general office operations, you’ll play an important role in keeping day-to-day activities organized and moving forward.

You’ll work closely with tenants, contractors, legal professionals, suppliers, and internal stakeholders, balancing routine administration with more complex requests. This role is well suited to someone who takes pride in accuracy, enjoys learning, and can confidently follow matters through to completion.

What’s In It for You
You’ll gain hands-on exposure to multiple areas of commercial real estate administration while building your experience across leasing, property operations, and accounting. You’ll join a professional environment where initiative, reliability, curiosity, and strong follow-through are valued.

Your Responsibilities

Office Administration

• Organize and maintain schedules, including meetings, appointments, calendar updates, reminders, and special events.
• Maintain organized Google Drive systems, electronic filing structures, corporate records, and other supporting office records.
• Administer commercial parking accounts, including tenant allocations, account changes, and related record keeping.
• Prepare correspondence, documents, spreadsheets, and other office materials as required.
• Provide general office administrative support, including document preparation, filing, telephone coverage, correspondence, and coordination of day-to-day office requirements.
• Perform additional duties and responsibilities as assigned from time to time.

Accounts Payable & Transaction Processing

• Process accounts payable and accounts receivable transactions.
• Assist with rent roll administration and tenant-related financial matters.
• Maintain organized physical and digital files of accounting records, invoices, statements, and supporting documentation.
• Enter and maintain applicable accounting information and supporting documentation in QuickBooks.
• Assist with routine bookkeeping and follow-up as required.

Skills and Qualifications
• 2-3 years of experience in office administration, accounting support, bookkeeping, or property administration.
• Hands-on experience processing accounts payable (AP) and accounts receivable (AR), including invoice entry, payment tracking, and maintaining accurate financial records.
• Experience using QuickBooks for transaction entry, bookkeeping, and accounting documentation is perferred.
• Familiarity with rent rolls, tenant billings, rent payments, and tenant-related financial administration is an asset.
• Proficiency with Microsoft Office, particularly Excel and Google Workspace.
• Confident, professional communication skills when working with tenants, contractors, lawyers, and external service providers.
• Strong organizational skills with the ability to maintain accurate accounting records, invoices, statements, and electronic filing systems.

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.