Interim CFO | E-commerce Scale-Up | £2,000–3,000 per day in London

Interim CFO | E-commerce Scale-Up | £2,000–3,000 per day in London

London Full-Time 70000 - 90000 £ / year (est.) No working from home possible
Harmonic Finance™ | Certified B Corp

At a Glance

  • Tasks: Lead financial strategy and operations for a high-growth e-commerce business.
  • Company: Dynamic e-commerce scale-up with a strong market presence across Europe.
  • Benefits: Competitive daily rate, opportunity to make an immediate impact, and work in a fast-paced environment.
  • Other info: Inclusive workplace welcoming diverse applicants; regular travel across Europe required.
  • Why this job: Join at a pivotal moment and drive strategic finance initiatives for significant growth.
  • Qualifications: Proven interim CFO experience with strong FP&A skills and e-commerce background.

The predicted salary is between 70000 - 90000 £ per year.

Harmonic are delighted to be working with a high‑growth e‑commerce business in their search for an Interim CFO for a 6‑month period. Our client is interested in discussing with Interim CFOs who have a track record on Interim/Contract assignments, highlighting an ability to deliver value quickly.

The Client: A globally scaled e‑commerce business operating across multiple European markets. The business has achieved significant scale, is profitable with strong fundamentals, and the focus now is on sharpening commercial discipline, improving EBITDA margins, and raising the bar on strategic finance.

The Role: A 6‑month interim CFO engagement reporting directly to the CEO. As the CFO, you will take full ownership of the finance function at a pivotal moment. This is both a strategic and operational role. The priority areas are transformation around Systems, FP&A, board communication, and cost efficiency, as well as managing the full finance function across reporting, treasury, controls, and compliance.

Key Responsibilities:

  • Act as strategic partner to the CEO, leading the value creation plan and driving commercial decision‑making across the business.
  • Own all financial reporting and board pack preparation, shifting the focus from data volume to strategic narrative and clear insight.
  • Build and lead a rigorous FP&A capability, introducing unit economics discipline including LTV, CAC, and broader commercial analysis.
  • Manage the full finance function: group reporting, month‑end close, treasury, and financial controls.
  • Oversee statutory reporting, audit coordination, tax, and regulatory compliance across the group.
  • Manage multi‑currency treasury and cash management across multiple markets.
  • Lead, develop, and set clear priorities for the finance team.

Proven interim CFO track record with revenues in excess of £100m, ideally within an e‑commerce or digital business. Strong FP&A background with a clear understanding of unit economics (LTV, CAC etc.). Demonstrable experience driving cost efficiency and EBITDA improvement in a scaling or mid‑market business. Career contractor with a track record of landing quickly and delivering impact.

Location: UK‑based with regular European travel required. Contract: 6 months. Start Date: ASAP.

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.

Interim CFO | E-commerce Scale-Up | £2,000–3,000 per day in London employer: Harmonic Finance™ | Certified B Corp

Harmonic is an exceptional employer for those seeking a dynamic and impactful role in the e-commerce sector. With a focus on fostering an inclusive work environment, employees benefit from a culture that values diverse perspectives and encourages professional growth. The opportunity to lead financial transformation in a high-growth business across multiple European markets offers unique challenges and rewards, making it an ideal setting for ambitious finance professionals.

Harmonic Finance™ | Certified B Corp

Contact Details:

Harmonic Finance™ | Certified B Corp Recruitment Team

We think you need these skills to ace Interim CFO | E-commerce Scale-Up | £2,000–3,000 per day in London

Interim CFO Experience
Financial Reporting
FP&A (Financial Planning & Analysis)
Cost Efficiency Management
Strategic Finance
Board Communication
Unit Economics Understanding (LTV, CAC)