Interim Head of Finance | High-Growth Multisite / Real Estate scaleup | London

Interim Head of Finance | High-Growth Multisite / Real Estate scaleup | London

Harmonic Finance are delighted to be working with one of London’s most exciting multisite scaleup operators. The business is founder-led, entrepreneurial, and has recently doubled its portfolio of sites, with further growth planned over the next 36 months. With multiple UK entities and operations already in the European market, this is a fantastic opportunity for an experienced Interim Head of Finance to take ownership of implementing investor-grade reporting, forecasting, and controls during a key period of scale-up.

The role is initially a full-time, on-site commitment for 2–4 months, before transitioning to a fractional basis (1–2 days per week) to support continuity.

The Role:

Working closely with the Founders and Investors, you will take a hands-on role in shaping the finance function, strengthening month-end processes, and delivering high-quality reporting. You will also lead the development of a 13-week cash flow model, rebuild the long-term forecast, and establish clear KPIs for stakeholders. There is a group reporting structure which also needs some improvements to consolidations so this will form part of the initial assignment. This is an ideal role for a commercially aware and technically strong qualified accountant who enjoys operating in a fast-paced, founder-led environment.

Responsibilities

• Deliver investor-grade month-end close and reporting
• Build and implement a live rolling cash flow model with weekly update cadence
• Support with the build out of robust financial controls
• Rebuild and reconcile the long-term forecast model to the business plan, incorporating scenario analysis
• Identify and address control weaknesses, implementing improved governance
• Develop and distribute a concise weekly KPI dashboard (sales, occupancy, operational metrics)
• Assess the Finance Manager’s capabilities and make recommendations on future resourcing
• Ensure a comprehensive and clear process are passed onto the team (3 in total)

What We Need (essential):

• Qualified Accountant (ACA, ACCA, or CIMA) or QBE with experience in multisite / real estate / property etc
• Strong technical and operational finance experience, ideally in commercial property, real estate, or multi-entity environments
• Advanced Excel and financial modelling skills
• Experience with group accounting / reconciliations
• Experience implementing reporting and controls in fast-paced, high-growth businesses
• Immediate availability and ability to be office-based near King’s Cross

What We Need (non-essential):

• Understanding of IFRS 15/16 would be beneficial
• Past experience with OPCo PropCo structures would be beneficial
• Experience within a Venture Capital (VC) or PE (Private Equity) backed business would be desirable

Day Rate: £500–£550 per day (Outside IR35)

Start date: ASAP / 2 weeks maximum

At Harmonic, we are dedicated to fostering an inclusive and equitable workplace. We actively welcome applications from individuals of all backgrounds and assure you that every candidate will be thoughtfully considered for the roles we represent, without regard to race, religion, gender expression, disability, or sexual orientation