Oshawa, On Accounting assistant Jobs – 15 Openings This Week

Office Manager / Bookkeeper
Horn IT Solutions Inc. —Whitby, ON
- $75,000–$85,000 a year
- Full-time
- Hybrid work
- QuickBooks
- Organizational skills
- Contracts
- Dental care
- Paid time off
Quick apply
Accounting Clerk
CCT Auto-Trans Inc. —Courtice, ON
- $55,000–$65,000 a year
- Full-time
- Microsoft Office
- In-person
- Business
- Disability insurance
- Dental care
Quick apply
2d
Bookeeper
Express Employment Professionals —Whitby, ON
- $20.50 an hour
- Full-time
- Writing skills
- QuickBooks
- In-person
Quick apply
5d
Accounting Assistant
Ell Rod Holdings —Orono, ON
- $60,000–$70,000 a year
- Full-time
- Microsoft Outlook
- Finance
- QuickBooks
- Dental care
- Paid time off
Quick apply
11d
Office Manager/Bookkeeper
Tribro Group Ltd —Ajax, ON
- $50,000–$85,000 a year
- Full-time
- QuickBooks
- Organizational skills
- Budgeting
- Dental care
- Flexible schedule
Quick apply
1d
Bookkeeper/Accountant
Caliber Response Inc. —Oshawa, ON
- $50,000–$75,000 a year
- Full-time
- QuickBooks
- Organizational skills
- Budgeting
Quick apply
3d
Bookkeeper - Part Time
Mitchell Accessories Ltd —Oshawa, ON
- $24–$26 an hour
- Part-time
- Hybrid work
- Customer service
- English
- Microsoft Office
Quick apply
3d
Medical Administration Clerk
Durham College —Oshawa, ON
- $30.43 an hour
- Temporary
- Medical office experience
- Bachelor's
- Accounting
1d
Junior Accountant
i8is inc. —Pickering, ON
- $20–$25 an hour
- Full-time
- QuickBooks
- Data entry
- Accounting
Quick apply
Bookkeeper/Accounting Tech
Elevation CPA Professional Corporation —Port Perry, ON
- $40,000–$65,000 a year
- Full-time
- QuickBooks
- In-person
- Communication skills
- Paid time off
- Flexible schedule
Quick apply

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Office Manager / Bookkeeper
Horn IT Solutions Inc. —Whitby, ON
HST/GST compliance and filing. This is a critical role that ensures financial accuracy, operational discipline, and a smooth administrative backbone for the…
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Quick apply
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accounting assistant jobs near oshawa, on

Office Manager / Bookkeeper

Horn IT Solutions Inc.
Whitby, ON

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Job details

Permanent | Full-time
$75,000–$85,000 a year

Qualifications

Accounts receivable
Contract management
Accounts payable
Operations management
Supplier management experience
Financial reporting
Process improvement
General ledger maintenance
QuickBooks Online
QuickBooks
Organizational skills
Contracts
Accounts receivable processing
Finance and accounting experience
Office management
Credit card reconciliation
Payroll processing
Business process improvement

Full job description

About Horn IT

Horn IT Solutions is a managed IT services provider delivering standardized, scalable, and security-first IT environments for our clients. Our service model emphasizes operational consistency, strong governance, and high-quality client experience across all engagements.

As we continue to grow, we are seeking a highly organized and detail-oriented Office Manager / Accounting & Operations Coordinator to take ownership of our financial operations and administrative functions.

Role Overview

This role is responsible for managing the day-to-day financial operations of the business, including accounts receivable/payable, bookkeeping, payroll coordination, and compliance reporting. In addition, the role supports key operational functions such as client billing, contract management, and vendor administration.

This is a critical role that ensures financial accuracy, operational discipline, and a smooth administrative backbone for the organization.

Key Responsibilities

Accounting & Financial Operations

Manage Accounts Receivable (AR) and Accounts Payable (AP) processes end-to-end
Perform monthly close activities, including:
Wage, bonus, and commission accruals
Prepaid expense tracking
Capital asset tracking and depreciation
Foreign exchange (FX) adjustments
Oversee and coordinate payroll processing
Perform bank and credit card reconciliations
Maintain accurate expense categorization and general ledger integrity
Prepare and file HST returns
Support ongoing financial reporting and audit readiness

Operational & Administrative Responsibilities

Manage client billing processes, ensuring accuracy and timeliness
Administer client contracts, including tracking renewals, terms, and pricing
Manage vendor contracts and relationships
Maintain financial and operational documentation
Support internal process improvement and standardization initiatives

Systems & Tools

Utilize and maintain financial systems, including:
QuickBooks Online (expert-level proficiency required)
Dext (expense capture and processing)
Plooto (payments and approvals)
Learn and operate business systems including:
Halo PSA (Professional Services Automation tool for billing and operations)
Other internal platforms as required

Qualifications & Experience

3+ years of experience in bookkeeping, accounting, or office management roles
Strong hands-on experience with:
QuickBooks Online (advanced/expert level)
AR/AP workflows and tools (Dext, Plooto or similar)
Solid understanding of:
Canadian accounting practices
HST/GST compliance and filing
Month-end close processes and accrual accounting
Experience with payroll coordination
High attention to detail and strong organizational skills
Ability to manage multiple priorities and deadlines independently

Nice to Have

Familiarity with PSA tools
Exposure to contract management and recurring revenue billing models

What Success Looks Like

Accurate and timely month-end close
Clean, well-maintained financial records
Efficient and predictable billing and collections processes
Strong control over contracts and financial commitments
Improved operational visibility and financial discipline

Why Join Horn IT

Be part of a growing, process-driven IT services organization
Work in a structured, standards-based environment with clear operating models
Opportunity to shape and improve internal financial and operational processes
High-impact role with visibility across the entire business

Job Types: Full-time, Permanent

Pay: $75,000.00-$85,000.00 per year

Benefits:

Dental care
Extended health care
Life insurance
On-site parking
Paid time off
RRSP match

Work Location: Hybrid remote in Whitby, ON L1N 8P9

Quick apply

Refine Your Search

accounting assistant jobs in oshawa, on

Office Manager / Bookkeeper

Accounting Clerk

Bookeeper

Accounting Assistant

Office Manager/Bookkeeper

Bookkeeper/Accountant

Bookkeeper - Part Time

Medical Administration Clerk

Junior Accountant

Bookkeeper/Accounting Tech

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