The Senior Quantity Surveyor plays a key role in the commercial management of major infrastructure works within a complex, multi-stakeholder environment. This position is responsible for cost planning, contract administration, change management, and financial reporting across the full project lifecycle, supporting the delivery of sub-programs such as Airfield Civil & Electrical, Interim Infrastructure, GHG, and Priority Projects.

Working within a progressive design-build workplace, the Senior QS ensures accurate cost control, proactive risk management, and alignment with target price objectives, while supporting collaborative decision‑making across design, construction, and commercial teams.

Responsibilities

Lead cost planning, estimating, and budgeting activities across assigned projects or sub-programs

Manage and administer contracts, ensuring compliance with commercial terms and conditions

Monitor project costs, forecasts, and cash flow, identifying risks and opportunities proactively

Prepare, review, and negotiate change orders, variations, and claims

Support development and validation of Target Price in a progressive design-build environment

Conduct detailed cost analysis and provide recommendations to optimize value and reduce risk

Collaborate with design, construction, and procurement teams to align cost, scope, and schedule

Manage subcontractor commercial processes including procurement support, valuations, and final accounts

Prepare and present commercial reports, including cost-to-complete, variance analysis, and risk registers

Support dispute resolution processes and provide contractual guidance to project teams





Ensure accurate and timely documentation of all commercial activities and correspondence

Mentor and support junior commercial staff as required

Desired Skills, Knowledge, Competencies and Qualifications

Degree in Quantity Surveying, Construction Management, Engineering, or a related field

10+ years of experience in quantity surveying or commercial management within large infrastructure or construction projects

Experience working in progressive design‑build, design‑build, or similar collaborative delivery models

Solid knowledge of contract forms (e.g., CCDC, NEC, FIDIC or equivalent)

Demonstrated experience managing cost control, forecasting, and financial reporting on complex projects

Proven experience with change management, claims, and contract negotiations

Strong understanding of risk management and cost planning methodologies

Experience working in multi‑stakeholder or joint venture environments is an asset

Advanced proficiency in cost management tools and Microsoft Office (Excel, Power BI preferred)

Strong analytical, negotiation, and problem‑solving skills

Excellent communication skills with the ability to influence stakeholders at all levels

Ability to work in a fast‑paced, high‑volume environment with competing priorities

PACT is an equal opportunity employer and is committed to providing employment accommodation in accordance with the Ontario Human Rights Code and the Accessibility for Ontarians with Disabilities Act. We are committed to providing an inclusive and barrier‑free candidate experience and work environment. If you require accommodation to apply or if selected to participate in an assessment process, please advise Human Resources.

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📌 Senior Quantity Surveyor (Ontario)
🏢 PACT
📍 Ontario