Senior Quantity Surveyor

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 environment, 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
Strong 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
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