Launched in 2009 as a small construction venture between two friends, Size Group brings together the vital elements of property from the construction of luxury buildings through to the maintenance and management of a property portfolio.
Benefits
* Competitive salary
* Auto enrolment to company pension scheme (opt‑out option available)
* Private medical insurance
* Critical illness insurance
* 26 days annual leave
* Travel expenses for site‑based staff
Culture
At Size Group our values underpin who we are. We are empathetic, people‑driven and focused; tenacious, relentlessly pursuing the highest standards; integrity, earning trust and building relationships; entrepreneurial, pushing beyond the obvious.
Role
As a Commercial Manager you will lead the commercial function across major projects, ensuring robust financial control, strategic oversight and effective risk management from pre‑construction through to final accounts. Reporting to the Surveying Director, you will take full ownership of the commercial performance of large‑scale and complex projects, with a particular focus on structural works. You will shape commercial strategy, drive value, and ensure best‑in‑class contract management across all delivery stages.
* Lead the commercial strategy and financial management of large‑scale, high‑value projects, with a strong emphasis on structural packages.
* Oversee cost planning, budgeting, forecasting and detailed financial reporting at project and portfolio level.
* Take ultimate responsibility for subcontract procurement strategy, negotiation and commercial management across complex structural trades.
* Manage and mitigate commercial risk, driving proactive decision‑making and value engineering opportunities.
* Oversee the preparation and review of CVRs, cash flow forecasts and final accounts.
* Ensure robust administration of JCT contracts and compliance with contractual obligations.
* Lead, mentor and develop a team of Quantity Surveyors and Senior Quantity Surveyors.
* Build and maintain strong relationships with key clients, consultants and stakeholders, acting as a trusted commercial adviser.
Qualifications
* Extensive experience (typically 10+ years) in quantity surveying/commercial management within a main contractor environment.
* Proven experience leading the commercial function on large‑scale, complex construction projects, with significant exposure to structural works.
* A strong track record in the prime residential sector, with experience delivering high‑value schemes.
* In‑depth knowledge and application of JCT contract forms and commercial best practice.
* Strong leadership capability, with experience managing and developing high‑performing commercial teams.
* Excellent commercial acumen, with the ability to influence, negotiate and drive performance at senior levels.
* A proactive and strategic mindset, with the confidence to challenge and add value.
* A degree or equivalent in Quantity Surveying or a related discipline.
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