CFO Series A Climate Tech Start-Up London/Hybrid

Chief Financial Officer | Series A Climate Tech Start-Up | London/Hybrid

We're exclusively partnering with one of the UK's most exciting climate tech scale-ups to appoint a commercially driven CFO ahead of their Series B fundraise.

With a first-in-market product preparing to enter manufacturing and commercial contracts already in motion, the company is on a mission to accelerate industrial decarbonisation. Backed by highly credible and mission-aligned investors, they've built a strong foundation and are now entering a critical period of scale-up.

The Role

The incoming CFO will take full ownership of the company's financial strategy, leading their Series B, shaping commercial models, and acting as a thought partner to the CEO as they bring their first product to market.

This is a rare opportunity to join a purpose-driven team working at the forefront of climate innovation. You'll be the central financial voice in the business, representing the company to investors, aligning strategy with long-term capital plans, and helping to guide the company through an exciting growth phase.

Key Responsibilities

• Lead and structure the upcoming Series B fundraise
• Design and manage blended finance strategies (equity, debt, project finance)
• Act as the key financial partner to the CEO, owning strategic modelling and scenario planning
• Collaborate with the Commercial Manager on pricing, long-term contract strategy and revenue planning
• Build out financial infrastructure: reporting, forecasting, budgeting, and risk controls
• Oversee and mentor the Finance Manager and manage external finance providers
• Represent the business to current and prospective investors, supporting board engagement and stakeholder management
• Drive governance, compliance and financial best practices as the company scales

Experience (Essential)

• Significant experience raising capital, ideally leading or supporting Series B or later-stage fundraises
• Experience in Climate Tech, Agri Tech or Hardware/Software companies
• Deep understanding of finance in a fast-growth, impact-led environment, with prior experience of scaling a company
• Hands-on, strategic and commercially astute, you've built and led high-performing finance teams
• Gravitas and clarity in investor and board discussions
• Entrepreneurial mindset: comfortable with ambiguity, opportunity-led, and resilient

Experience (Desired)

• Experience with carbon markets or decarbonisation business models preferred
• Able to connect macroeconomic thinking with company-level planning

Salary: £175,000 base salary + generous equity package

Location: London, hybrid working (c.3 days in office, with flexibility)

Notice: Up to 3 months

If you're a commercially focused CFO with a strong track record of leading fundraises and scaling impactful ventures, this is a high-impact opportunity to shape the financial future of a purpose-driven business.

Please feel free to circulate this amongst anyone who you believe may be interested in this opportunity.

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.