Office Administrator

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

We are seeking a confident, proactive, and highly organized Leasing and Office Administrator to provide commercial leasing, property administration, accounting, and general office support within a corporate office environment.

The successful candidate will manage a broad range of day-to-day responsibilities and ensure that leasing, property, bookkeeping, and office matters are accurately documented, organized, and followed through to completion.

Success in this role requires an appreciation that both routine and complex tasks are equally important. The ideal candidate is reliable, detail-oriented, naturally curious, eager to learn, and comfortable taking on new responsibilities and developing new skills. Strong organization, consistency, initiative, and follow-through are essential.

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

• Previous experience in commercial real estate, commercial property management, or lease administration is required

• Strong understanding of commercial leases, renewals, tenant coordination, rent rolls, and ongoing lease administration.

• Strong proficiency with Microsoft Excel and Word, Google Sheets, Google Drive, and Gmail.

• Working knowledge of QuickBooks is preferred.

• Strong organizational skills with excellent accuracy, attention to detail, discretion, and follow-through.

• Confident, professional communication skills when working with tenants, contractors, lawyers, and external service providers.

• A proactive, resourceful approach with the ability to manage changing priorities and independently resolve routine issues.

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.