Senior Office Manager​/Bookkeeper

Employment Type: Full-Time, Permanent

Schedule: Monday–Friday, 8:00 a.m. – 4:30 p.m.

Salary: $80,000–$90,000 per year

Posting Date: August 17, 2026

Final date to receive applications: September 14, 2026

Cesaroni Technology Incorporated (CTI) is an innovative company specializing in industrial design and manufacturing. Our expertise spans research and development across four core business units:

• Ammunition component manufacturing for military and law enforcement.
• Rocket and missile propulsion system development for aerospace applications.
• Polymeric heat exchange systems for diverse industrial uses.
• Automotive test system integration for precision testing and diagnostics.

We are seeking an experienced Office Manager / Bookkeeper to join our team at our Gormley, Ontario facility. This position is responsible for maintaining the day-to-day financial and administrative operations of the company while managing payroll, human resources administration, government reporting, and general office management.

• Manage day-to-day bookkeeping activities, including accounts payable, accounts receivable, invoicing, payment processing, and expense tracking.
• Prepare customer invoices, follow up on outstanding receivables, and maintain accurate billing records.
• Process vendor invoices and payments and maintain accurate accounts payable records.
• Enter and maintain financial transactions within the company's accounting/ERP system.
• Perform monthly bank reconciliations and investigate discrepancies to ensure financial records are accurate.
• Maintain general ledger records and support month-end and year-end financial processes.
• Coordinate with external accountants to support year-end financial statements, tax filings, audits, and other accounting requirements.
• Prepare and submit government remittances and filings, including HST/GST returns and other required regulatory reports. Maintain accurate records to support compliance with Canada Revenue Agency (CRA) requirements.
• Maintain accurate records related to licenses, registrations, insurance, and other corporate requirements.

• Support employee onboarding and offboarding processes, including preparing employment documentation and maintaining personnel files.
• Assist with employee benefit administration and communicate updates to employees.
• Manage day-to-day Workplace Safety and Insurance Board (WSIB) administration.
• Prepare payroll documentation, including T4 slips, Records of Employment (ROEs), and year-end payroll summaries. Process payroll accurately and on schedule. Verify employee hours, overtime, vacation usage, and payroll adjustments.

• Manage daily office operations, ensuring efficient administrative processes and a well-organized workplace.
• Maintain office records, filing systems, and confidential business documentation.
• Coordinate office supplies, equipment maintenance, vendor relationships, and service agreements.
• Manage incoming correspondence, phone calls, deliveries, and general administrative inquiries.
• Maintain accurate company records, including contracts, licenses, insurance documents, and business registrations.

• Post-secondary education in Business Administration, Accounting, Finance, Human Resources, or a related field preferred.
• 5+ years of combined experience in bookkeeping, accounting administration, office management, payroll, or a similar role preferred.
• Strong understanding of bookkeeping principles, payroll processes, and government reporting requirements. Experience with accounts payable, accounts receivable, invoicing, bank reconciliations, and financial recordkeeping.
• Experience preparing HST/GST filings and government remittances.
• Experience processing payroll and preparing T4s, ROEs, and year-end payroll documentation.
• Experience supporting HR functions, including employee records, onboarding/offboarding, payroll administration, and benefits.
• Experience with WSIB administration and reporting is an asset.
• Experience with Microsoft Dynamics 365 Business Central is considered an asset.

Cesaron…