st. catharines, on controllers Jobs – 44 Openings This Week

Assistant Controller
Extreme Technology Corporation —Lincoln, ON
- $85,000–$125,000 a year
- Full-time
- Microsoft Excel
- Finance
- Analysis skills
- Paid time off
- Life insurance
Quick apply
9d
Controller
Moncer Inc. —St. Catharines, ON
- Full-time
- Microsoft Excel
- Analysis skills
- Bachelor's
- Tuition reimbursement
- Paid time off
Quick apply
9d
Controller
CWD —Niagara Falls, ON
- $100,000–$135,000 a year
- Full-time
- Microsoft Excel
- Sales
- ERP systems
- Dental care
Quick apply
Controller - Permanent
LRO Staffing —St. Catharines, ON
- $110,000–$130,000 a year
- ERP systems
- English
- Accounting
Assistant Controller
Canadian Niagara Hotels —Niagara Falls, ON
- $90,000–$100,000 a year
- Full-time
- Hospitality
- Microsoft Excel
- ERP systems
- Dental care
Quick apply
Controller- Finance Leader & Strategic Partner
TalentSphere —Niagara Falls, ON
- $100,000–$135,000 a year
- Full-time
- Microsoft Excel
- Management
- ERP systems
Quick apply
SR Financial Analyst- Bilingual
TRUE Sports ULC —Ontario
- $90,000–$100,000 a year
- Full-time
- Remote
- Bilingual
- Oracle
- English
Quick apply
Controller
Confidential —Lincoln, ON
- $90,000–$120,000 a year
- Full-time
- Accounting
- In-person
- Manufacturing
Quick apply
Finance Controller / HR Manager
Ivy League Electric Inc. —Burlington, ON
- $25–$35 an hour
- Full-time
- Accounting
- Human resources
- Budgeting
Quick apply
Controller- Financial Planning and Analysis Manager
Milestone Foster Homes —Burlington, ON
- $130,000–$150,000 a year
- Full-time
- Microsoft Excel
- Finance
- Master's degree
- Mileage reimbursement
- Disability insurance
Quick apply
5d
Accounting Manager
Lawlor Safety —Hamilton, ON
- $75,000–$100,000 a year
- Full-time
- Microsoft Excel
- ERP systems
- Microsoft Office
- Employee assistance program
- Life insurance
Quick apply
5d
Controller
Book Depot —Thorold, ON
- $125,000–$150,000 a year
- Full-time
- Microsoft Excel
- ERP systems
- Analysis skills
Quick apply
Controller
Finlink Group —St. Catharines, ON
- Full-time
- Microsoft Excel
- ERP systems
- Analysis skills
Quick apply
12d
FOH Rooms - Rooms Controller
Canadian Niagara Hotels Group —Niagara Falls, ON
- $18.50–$19.25 an hour
- Weekends as needed
- Microsoft Word
- Microsoft Excel
- Customer service
- Dental care
Quick apply
20h
Assistant Controller
Canadian Niagara Hotels Group —Niagara Falls, ON
- $90,000–$100,000 a year
- Full-time
- Hospitality
- Microsoft Excel
- ERP systems
- Dental care
Quick apply
Financial Controller
The Clayfield —Niagara-on-the-Lake, ON
- Full-time
- Hospitality
- Hotel
- Accounting
Quick apply
Controller
I3D Canada- Burloak Technologies —Oakville, ON
- Weekends as needed
- Finance
- Bachelor's
- QuickBooks
Quick apply
Financial Controller
TWD Technologies Ltd. —Burlington, ON
- Full-time
- Microsoft Excel
- Oracle
- ERP systems
Quick apply
Interim Corporate Controller
UrbanSolutions Planning & Land Development —Hamilton, ON
- $100,000–$125,000 a year
- Contract
- Microsoft Excel
- Accounting
- Organizational skills
Quick apply
13d
Controller
Finlink Group —St. Catharines, ON
- Full-time
- Microsoft Office
- Finance
- Business
Quick apply
Senior Accounting Professional
mcCallumSather Architects Inc. —Hamilton, ON
- $90,000–$120,000 a year
- Full-time
- Hybrid work
- Microsoft Word
- Microsoft Excel
- Finance
- Dental care
- Paid time off
Quick apply
Intermediate/Senior - Cost Controller
TWD Technologies Ltd. —Burlington, ON
- Microsoft Excel
- Engineering
- ERP systems
Quick apply
Contrôleur(e) financier(ère) - Permanent
LRO Staffing —Canada
- Up to $115,000 a year
- Call to connect
- Hybrid work
- Microsoft Excel
- Finance
- Master's degree

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Controller
Moncer Inc. —St. Catharines, ON
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Controller - Permanent
LRO Staffing —St. Catharines, ON
Reconciliation of bank and credit card accounts, managing customer and distributor accounts & ensuring prompt payment, as well as resolving discrepancies as…
$110,000–$130,000 a year

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Assistant Controller

Extreme Technology Corporation
Lincoln, ON

Quick apply

Job details

Permanent | Full-time
9 days ago

Benefits

Paid time off
Life insurance

Skills

Microsoft Excel
Financial auditing
Process improvement
Finance
Chartered Professional Accountant
Analysis skills
Bachelor's
Accounting
Telecommunication
AI
Accounting
Communication skills

Full job description

Position Summary

The Assistant Controller supports day-to-day accounting operations and helps maintain accurate, complete, and timely financial records across multiple entities within our group of companies. Reporting to the Controller, this role supports general ledger integrity, contributes to month-end and year-end close, and helps ensure financial information is prepared in accordance with internal policies and applicable accounting standards.

The successful candidate will work alongside the Controller and an established finance team (which includes dedicated resources for accounts payable, payroll, accounts receivable, and cash flow management), progressively taking on broader responsibilities. This role will also serve as the Controller’s backup, stepping in to cover controllership responsibilities during absences and providing continuity of the finance function. As the group continues to grow, additional opportunities will become available for the right candidate to expand their scope and advance their career.

Working closely with the Controller and cross-functional teams, this position prepares journal entries, performs reconciliations, investigates variances, and supports audit-ready financial reporting. The Assistant Controller is expected to manage competing priorities, maintain strong documentation, and actively identify opportunities to modernize processes, strengthen controls, and increase the efficiency of the close cycle, including through the thoughtful adoption of AI and automation tools.

Key Responsibilities

Support month-end and year-end close across multiple entities, ensuring deadlines are met and deliverables are completed accurately and on time
Prepare, review, and post recurring, standard, and adjusting journal entries with supporting documentation
Maintain the close checklist, track outstanding items, and follow up with stakeholders to keep the close process on schedule
Maintain general ledger accuracy by reviewing account activity, verifying coding, and ensuring transactions are recorded correctly
Prepare bank reconciliations and investigate reconciling items to ensure cash balances are complete and accurate
Prepare and review balance sheet reconciliations, identify variances, and resolve discrepancies in a timely manner
Manage related-party and intercompany transactions, including reconciliations and resolution of out-of-balance items
Reconcile subledgers, including accounts receivable, accounts payable, and payroll, to the general ledger
Maintain organized supporting schedules and documentation for internal review and external audit requirements
Follow internal controls, accounting policies, and standard procedures to support accurate and compliant financial reporting
Assist with internal and external audit requests by preparing schedules, gathering documentation, and responding to information requests
Support revenue recognition, accruals, prepaid expenses, and other month-end accounting activities as needed
Cross-train with the Controller on cash flow management, financial reporting, and group-level consolidations, providing coverage and continuity as needed
Partner with operational and technical teams across the group to investigate and resolve issues that affect financial reporting (e.g., GL coding errors, billing or provisioning discrepancies, sales-to-GL reconciliation issues)
Champion the adoption of AI tools, automation, and modern accounting technology to streamline workflows, improve accuracy, and reduce manual effort across the finance function
Identify opportunities to improve accounting processes, strengthen documentation, and increase team efficiency
Provide ad hoc accounting and financial support to the Controller and finance team as needed

Qualifications

Education & Experience

Bachelor’s degree in accounting or finance, or equivalent related experience
CPA designation, or actively enrolled in the CPA Professional Education Program (PEP) with a clear path to designation, is required
3–5 years of progressive accounting experience, preferably in a multi-entity environment
Experience with month-end close and general ledger activities
Experience with related-party and intercompany transactions and reconciliations
Experience in a multi-currency environment
Experience supporting or leading process improvement, system implementation, or finance transformation initiatives is an asset
Exposure to telecommunications, ISP, subscription-based, or recurring-revenue businesses is an asset

Technical Skills

Strong knowledge of accounting principles; ASPE or IFRS experience preferred
Knowledge of revenue recognition principles, particularly in subscription or recurring-revenue environments
Proficiency in Microsoft Excel and accounting systems such as QBO and Spire
Intercompany accounting experience is an asset
Demonstrated curiosity about and practical experience using AI tools (e.g., Claude, ChatGPT, Copilot) to improve productivity, analyze data, draft documentation, or automate routine accounting tasks
Comfort working with modern finance tools and an openness to moving away from manual processes in favour of automated, integrated workflows

Core Competencies

Strong attention to detail and accuracy
Ability to manage multiple priorities and meet deadlines
Strong analytical and problem-solving skills
Strong organizational and documentation skills
Ability to work independently and collaborate across teams
Forward-thinking mindset, actively looking for better, faster, smarter ways to do the work rather than defaulting to “how it’s always been done”
Leadership potential and the ambition to grow into a Controller-level role over time
Strong communication skills, with the ability to work across technical and non-technical teams

Why Join Us

This is an opportunity to step into a high-impact accounting role within a growing, forward-thinking organization. Working closely with the Controller and an established finance team, you’ll gain exposure across multiple entities while contributing to accurate, timely financial reporting and continuous process improvement.

We’re focused on doing things smarter, not just maintaining the status quo. With an emphasis on automation, modern tools, and practical use of AI, you’ll have the chance to streamline workflows, strengthen controls, and play a meaningful role in how our finance function evolves

We offer:

100 percent employer paid group benefits
Critical life insurance
Generous PTO and medical leave
Monthly cell phone allowance
Training and development opportunities to support your growth

Qualified candidates are invited to submit their resume outlining their qualifications and experience by no later than Wed Jun 3, 2026.

We thank all candidates for their interest in joining the Extreme Tech team, however, only those selected to advance to the next stage of the recruitment process will be contacted. No phone calls please.

Extreme Technology Corporation is an equal opportunity employer and is committed to fostering an inclusive and accessible work environment, providing accommodation in accordance with the Human Rights Code and Accessibility for Ontarians with Disabilities Act (AODA). We are dedicated to building a workforce that reflects diversity and provides accommodation throughout all stages of the recruitment process. Please contact Human Resources at [email protected] if you require assistance. All personal information is collected and used under the authority of the Freedom of Information and Protection of Privacy Act.

Pay: $85,000.00-$125,000.00 per year

Ability to commute/relocate:

Lincoln, ON: reliably commute or plan to relocate before starting work (required)

Application question(s):

Do you hold a CPA Designation or are you actively working towards one?

Education:

Bachelor's Degree (required)

Experience:

Progressive Accounting: 3 years (required)

Location:

Lincoln, ON (preferred)

Work Location: In person

Quick apply

Refine Your Search

controllers jobs in st. catharines, on

Assistant Controller

Controller

Controller

Controller - Permanent

Assistant Controller

Controller- Finance Leader & Strategic Partner

SR Financial Analyst- Bilingual

Controller

Finance Controller / HR Manager

Controller- Financial Planning and Analysis Manager

Accounting Manager

Controller

Controller

FOH Rooms - Rooms Controller

Assistant Controller

Financial Controller

Controller

Financial Controller

Interim Corporate Controller

Controller

Senior Accounting Professional

Intermediate/Senior - Cost Controller

Contrôleur(e) financier(ère) - Permanent

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