Who is Size?

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.

We now seek a Commercial Manager to join our team on a permanent, full-time basis

The Benefits

This is a great opportunity for a Commercial Manager with a construction background to join our forward-thinking and collaborative organisation.

We offer: 

• 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

You’ll play a pivotal role in delivering high-end, prime residential projects, making this an ideal setting to deepen your experience and accelerate your professional growth.

The Culture

At Size Group our values underpin who we are. They form an important benchmark for everyone – collectively and individually. We are:

Empathetic - People-driven and focused
Tenacious - Relentless pursuit of the highest standards
Integrity - Integrity earns trust. Trust builds relationships
Entrepreneurial - Self-starters that push beyond the obvious

We boast a culture that is focused on training and development, career paths and internal progression. What’s more, we’re committed to our employees and offer a range of benefits to support your lifestyle both in and out of the workplace.

The 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 account.

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 play a key role in shaping commercial strategy, driving value, and ensuring best-in-class contract management across all stages of delivery.

Working closely with senior project stakeholders, clients, and supply chain partners, you will provide leadership and direction to the commercial team, ensuring consistency, accuracy, and high performance across all commercial activities.

Additionally, you will:

• 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, particularly 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 advisor

About You

To be considered for this Commercial Manager role, you will have:

• 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
  

How to Apply

If your skill set matches the above and the prospect of helping deliver some of the country’s finest projects appeals to you, please reach out by clicking Apply.

Your application will be processed by Size Group, and interviews will be conducted on a rolling basis as suitable candidates apply. We therefore encourage you to submit ASAP to avoid missing out!