On-siteFull Time

Salary

$66.67 - $87.18 / hr

Location

Ottawa, ON

Ottawa, Ontario K1A 0A1

Posted

Oct 17, 2026

Role overview

Harris is seeking an experienced Senior Manager, U.S. Tax to play a critical role within our Global Tax team. Reporting directly to the Director, U.S. Tax, this position will serve as a trusted advisor and key partner in managing the Company's U.S. tax function, including tax compliance, tax accounting, acquisitions, and tax risk management. This is an excellent opportunity for a hands-on tax professional who thrives in a fast-paced, acquisitive environment and wants to have a meaningful impact on a growing organization.

WHAT YOU WILL DO

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Oversee U.S. federal and state corporate income tax compliance, ensuring timely and accurate filing of returns, extensions, and tax payments.

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Review the Company's quarterly and annual U.S. income tax provision under IFRS, including current and deferred tax calculations and supporting documentation.

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Manage estimated tax payments

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Lead responses to IRS and state tax authority audits and notices

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Develop, maintain, and enhance tax processes, controls, and documentation

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Analyze tax accounting implications of significant transactions and tax positions.

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Partner with Finance and Accounting teams to ensure accurate reporting of tax-related matters.

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Support U.S. tax planning initiatives, evaluate and model the U.S. tax implications of strategic business initiatives and transactions.

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Monitor changes in U.S. tax legislation and assess the impact on the Company's operations.

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Support tax due diligence, acquisition structuring, integration activities, and post-acquisition compliance matters.

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Analyze tax risks and planning opportunities associated with acquisitions and reorganizations.

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Manage, mentor, and develop members of the U.S. tax team.

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Help establish priorities, allocate work, and ensure high-quality execution across compliance, reporting and special projects.

WHAT ARE WE LOOKING FOR

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CPA designation, Master of Taxation, or equivalent professional qualification strongly preferred.

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10+ years of progressive U.S. corporate income tax experience, including experience within a large multinational public company and/or a Big Four accounting firm.

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Strong technical knowledge of U.S. federal and state corporate income tax rules and regulations.

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Experience with U.S. tax accounting and income tax provisions under IFRS and/or ASC 740.

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Strong U.S. tax research, technical analysis, and problem-solving capabilities.

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Experience managing tax audits and interactions with taxing authorities.

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Ability to work independently, prioritize competing demands, and perform effectively in a fast-paced environment.

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Excellent written, verbal, and interpersonal communication skills.

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Proficiency with tax technology and compliance software, including OneSource.

WHAT WILL MAKE YOU STAND OUT

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Experience supporting acquisitions, post-acquisition integration, and corporate restructurings.

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Experience in a technology, software, or highly acquisitive organization.

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Experience working within a multinational tax environment.

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Strong process improvement and tax technology skills.

WHAT WE OFFER

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Three weeks' vacation (four weeks after three years and five weeks after seven years) plus five personal days

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Comprehensive Medical, Dental and Vision coverage from your first day of employment

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Financial and professional development support for CPA candidates and members

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Employee stock ownership and RRSP matching programs

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Lifestyle rewards program

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Flexible work options

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Performance driven organization with many opportunities for advancement

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And more!

COMPENSATION DETAILS

The potential salary range for this role is $130,000 to $170,000 amount per year, with eligibility for bonus or merit program. Final compensation will be based on experience, skills, market conditions, and internal equity. We offer a competitive Total Rewards program including health benefits, RRSP matching, stock option, and career development opportunities.