Ontario Junior office administrator Jobs – 11 Openings This Week

Bookkeeper and Office Administrator
Highrise Restoration Inc. —Mississauga, ON
- $50,000–$60,000 a year
- 8 hour shift
- Microsoft Excel
- Microsoft Office
- High school diploma or GED
- Dental care
- Paid time off
Quick apply
Administrative Assistant I
Municipality of Chatham-Kent —Chatham-Kent, ON
- $40.85–$46.18 an hour
- Overtime
- Hybrid work
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
7d
Human Resources Administrator/Junior Recruiter
R.W. Tomlinson —Ottawa, ON
- $45,000–$55,000 a year
- Customer service
- Administrative experience
- Travel
- Dental care
- Tuition reimbursement
Quick apply
Junior Administrative Assistant
Thumbprint Solutions Inc —Stouffville, ON
- $15.07–$28.06 an hour
- Full-time
- Microsoft Word
- CRM software
- Microsoft Excel
- Designated paid holidays
- Dental care
Quick apply
14d
Branch Administrator Trainee
Nucor Rebar Fabrication —Windsor, ON
- $37,000–$43,000 a year
- Overtime
- Microsoft Office
- Administrative experience
- High school diploma or GED
- Employee stock purchase plan
- Dental care
Quick apply
Administrative Assistant I, SMART Program - Temporary, Part-time 0.6
VON Canada (Ontario) —Owen Sound, ON
- $17.63–$22.65 an hour
- Temporary
- Windows
- Microsoft Office
- No university degree
- Designated paid holidays
- Dental care

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Construction Administrative Assistant
Autoform Contracting London Ltd. —London, ON
Answering phone calls and responding to emails. Experience in an office or administrative role. Maintaining project files and documentation.
$20–$28 an hour
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Structured Settlement Support Analyst (Administrative Assistant)
McKellar Structured Settlements Inc. —Guelph, ON
Primarily assist with the administrative duties (e.g. drafting or typing correspondence, preparing forms, liaising with life companies, etc.) required for files…
$43,000 a year
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Junior Administrative Assistant
Thumbprint Solutions Inc —Stouffville, ON
Perform data entry and maintain organized digital filing systems. Diploma or certificate in Office Administration, Business Administration, or related field (or…
$15.07–$28.06 an hour
Quick apply
14d

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Bookkeeper and Office Administrator

Highrise Restoration Inc.
Mississauga, ON

Quick apply

Job details

Full-time
$50,000–$60,000 a year

Qualifications

Microsoft Excel
Filing
Microsoft Office
High school diploma or GED
Accounting
QuickBooks

Full job description

Highrise Restoration Inc.

Bookkeeper and Office Administrator

Location: Mississauga, ON (On-site)

Keep Us Organized. Help Us Grow.

Highrise Restoration Inc. is a growing general contracting company specializing in building envelope, parking garage, balcony, facade, waterproofing, and capital restoration projects for condominium, apartment, townhouse, and commercial properties. Behind every successful project is a strong office team that keeps records, finances, documentation, and daily operations organized.

We are looking for a Bookkeeper and Office Administrator to support bookkeeping, office administration, documentation, invoicing, financial tracking, and day-to-day office operations. This is a junior to intermediate role for someone who is detail-oriented, reliable, organized, and comfortable supporting both accounting and administrative functions.

The ideal candidate has experience with QuickBooks Online, Microsoft Excel, invoice tracking, expense records, and office coordination. Construction industry experience is preferred, but we are open to candidates with strong bookkeeping and administrative foundations who are eager to learn.

Key Responsibilities

Support day-to-day bookkeeping using QuickBooks Online
Maintain accurate financial records and organized documentation
Track invoices, expenses, job costing information, and project-related financial data
Assist with office administration and internal coordination
Support document organization, filing systems, and reporting
Assist project teams with data entry, records, and administrative tasks
Help maintain organized workflows between the office, project, and accounting functions
Support accounts payable, accounts receivable, and invoice follow-up as needed
Maintain accurate records for internal reporting
Help ensure office systems and documentation stay organized and up to date

Qualifications

2-4 years of bookkeeping, office administration, or related experience
QuickBooks Online experience required
Proficiency in Microsoft Excel and Microsoft Office
Construction industry experience preferred
Strong organization and attention to detail
Ability to manage multiple administrative priorities
Clear communication and professional attitude
Reliable, accountable, and team-oriented
Comfortable supporting both bookkeeping and office administration tasks
Candidates must be legally authorized to work in Canada.

Pay and Benefits

Full-time, permanent position
Pay: CA$50,000 - CA$60,000 per year, based on experience
Eligibility for the performance-based bonus program
Health, dental, vision, and extended benefits
Paid time off
On-site parking
Growth opportunity within a fast-growing construction/restoration company
Supportive and professional office environment
Schedule: Monday to Friday, 8-hour shift, on-site

Why Highrise Restoration Inc.?

At Highrise Restoration Inc., the office team plays a key role in keeping projects, finances, and operations running smoothly. You will join a company that values accuracy, organization, reliability, and teamwork. This role offers the opportunity to contribute to both bookkeeping and office operations while learning within a growing construction/restoration environment. If you are detail-oriented, dependable, and enjoy helping a team stay organized, Highrise could be the right fit.

Highrise Restoration Inc. is an equal opportunity employer and welcomes applications from all qualified candidates.

Quick apply

Refine Your Search

junior office administrator jobs in ontario

Bookkeeper and Office Administrator

Administrative Assistant I

Human Resources Administrator/Junior Recruiter

Junior Administrative Assistant

Branch Administrator Trainee

Administrative Assistant I, SMART Program - Temporary, Part-time 0.6

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