Commercial Cost Manager

Commercial Cost Manager

Ref: J0134EB

Salary: £40k - 45k per year + benefits

Location: Stratford, Greater London, England

Type: Permanent

Market: Commerce & Industry

Grafton Banks Finance are working with a growing services company with offices in Stratford, London to recruit a Commercial Cost Manager of a full time permanent basis. Reporting into the Head of Commercial and working within the wider business this role of Commercial Cost Manager has a strong focus on cost management, data accuracy and financial controls. This role is primarily analytical, centred on working with detailed cost data, spreadsheets, and margin analysis. The successful candidate will take full ownership of cost sheets, ensuring accuracy, consistency, and integrity across all commercial data. A key part of the role will involve identifying, investigating, and confidently challenging discrepancies, as well as driving improvements in data quality and reporting standards. In addition to these core responsibilities, the role includes oversight of the Commercial team, of 4 people ensuring workloads are effectively managed and that high standards are maintained across all activities. The Commercial Manager will support and develop team members, while also acting as a key link between senior leadership and the wider team.

This position requires someone who is highly analytical, detail-focused, and comfortable working hands-on with large volumes of financial data. The ideal candidate will have strong spreadsheet capability, a solid understanding of cost structures and margins, and a proactive approach to questioning and improving existing processes. While team management and stakeholder engagement are important, the primary focus of this role is on delivering accuracy, insight, and control across all cost related activities, rather than operational delivery.

Duties and Responsibilities will include:

• Directly manage, support, and develop a team of Commercial Assistants and Coordinators, acting as the first point of contact for team queries, issues, and escalations.
• Conduct regular 1:1s, monitor performance, and support ongoing development.
• Oversee the accuracy and integrity of cost data, contract updates, and system entries, analysing the data and identifying discrepancies or risks.
• Review and validate cost sheets, contract amendments, and service changes.
• Ensure consistent processes and standards are followed across the team.
• Take ownership of more complex contracts, cost models, and commercial exercises.
• Ensure accurate and consistent use of internal systems.
• Identify opportunities to improve processes, efficiency, and data quality.
• Implement best practices for data management, reporting, and auditing.
• Act as the key liaison between the Commercial team and senior management.
• Work closely with internal Managers to ensure cost sheets are accurate and up to date.
• Escalate key risks, issues, or trends to the Head of Department as needed.
• Support senior leadership by providing clear, concise updates and insights, also with departmental planning and priorities.
• Contribute to recruitment, onboarding, and training of new team members, if necessary.

Key Skills required for the job:

• Strong leadership and people management skills, with the ability to motivate and develop a team.
• Excellent numeracy skills and strong commercial awareness.
• Solid experience working with cost data, contracts, and financial information.
• Advanced Excel/Google Sheets skills, with the ability to review and guide others.
• High attention to detail with a structured and analytical approach.
• Strong organisational skills with the ability to manage multiple priorities.
• Confident decision-maker with the ability to work independently.
• Excellent communication skills, with the ability to liaise effectively across all levels of the

This is a full-time permanent job. Working in office full time Monday – Friday 40 hour working week. Foe your experience you will be rewarded with a competitive salary and benefits package. Due to company growth this is a newly created role.