Commercial Finance Manager Part-Time in London

Robert Half are working with a Leading Multinational in the Property and Workplace Services Space, known for delivering integrated solutions across a global client base. Following an internal promotion, the business is now looking to hire a Head of Finance to oversee a portfolio of 20 clients, working closely with operational teams to drive financial performance and commercial insight.

This is a high-impact leadership role for a commercially driven finance professional who thrives in a matrix environment, enjoys operating at pace, and is confident influencing senior operational and executive stakeholders. You will play a critical role in driving performance, strengthening financial governance, and supporting strategic decision-making across a large, revenue-generating portfolio.

Reporting to the Sector Finance Director, you will:

• Provide financial leadership across multiple business units, ensuring delivery of growth, margin improvement, and operational performance across a complex client portfolio.
• Act as a key finance business partner to Executive Directors and senior operational leadership teams, influencing commercial decisions and strategic direction.
• Lead monthly business and contract performance reviews, with a strong focus on underperforming contracts, risk identification, and value creation opportunities.
• Support divisional budgeting, forecasting, and long-range planning cycles, ensuring robust assumptions and commercial alignment.
• Oversee financial governance, ensuring balance sheet integrity, compliance with internal controls, and adherence to relevant accounting standards and frameworks.
• Support new business wins from a financial perspective, providing oversight from tender stage through mobilisation and transition.
• Drive continuous improvement across reporting processes, systems usage, and financial controls, reducing inefficiencies and enhancing data quality.
• Provide high-quality financial analysis, modelling, and insight to support commercial decision-making and performance improvement.

Fully qualified accountant (ACA, ACCA, or CIMA) with significant post-qualification experience in a senior finance business partnering role.

• Strong experience working in a contracts-led, service-based environment is essential, ideally within industries such as Facilities Management, Property Services, Defence, Security, Cleaning, Catering, Infrastructure Services, or similar multi-site operational businesses.
• Demonstrable background in business partnering within complex, operational organisations where performance is driven by contract delivery and margin management.
• Strong technical grounding in management accounting, financial reporting, and performance management, with the ability to operate at both detail and strategic level.
• Experience reviewing, challenging, and improving financial performance across large, multi-contract portfolios, including P&L, forecasting, and budgeting.
• Strong understanding of financial governance, controls, and ideally experience working within structured compliance environments.
• Excellent communication and influencing skills, with the ability to translate financial data into clear commercial insight and actionable recommendations.
• A proactive, hands-on leader who drives accountability, improves performance, and builds strong cross-functional relationships across operational teams.

This is a rare opportunity to step into a senior client-facing finance leadership role with genuine breadth and influence. You will operate close to divisional leadership, shaping financial strategy while ensuring strong delivery across a complex, multi-contract portfolio.

The organisation continues to experience strong growth and regular new contract wins, creating ongoing opportunities for senior finance professionals who can combine commercial thinking with strong technical and governance capability. With a proven track record of internal progression, this role offers both immediate impact and longer-term progression into divisional or country-level leadership positions.