Job title: Interim Head of Financial Control
Job type: Permanent
Emp type: Full-time
Salary type: Annual
Salary: negotiable
Job published: 02/01/2026
Job ID: 49389
Contact name: Andrew Buscombe
Phone number: +442081614443
Contact email: andrew@core3.co.uk

Job Description

Head of Finance (Reporting & Controls)

Core3 are partnered with a PE-backed CleanTech scaleup, recognised as one of the fastest growing in the UK, to appoint an interim Head of Finance (Reporting & Controls).

  • £450-600 per day on an initial 6-month contract
  • Remote contract* expectation of 1-2 days onsite every 2-3 weeks

 

 

Why join our client?

My client is a circa £50mill t/o Series A/B CleanTech scaleup with less than 100 employees.

The business has grown revenue between 5-10X year-on-year the last two years. They’re still in “startup” mode but they are well funded and are profitable.

Whilst they approach their next fundraise, this hire is required on an interim basis, but my client is clear that there is an opportunity for this person to turn permanent post-fundraise (6 months).

 

 

How you’ll make an impact

This is one of two ‘Head of Finance’ interim hires sitting below a very experienced CFO/COO.

 

The reason for these two hires is to move finance from a reactive function to a forward looking/value-add function that proactively supports decision making.

 

This role will look after the core controllership duties – operational finance, group reporting, stat reporting, treasury and cash, audit, and management accounting. You will also support on external reporting to the PE contacts.

 

My client is about to go through a new ERP implementation, so any prior knowledge of implementations, or tech/system skills are a bonus.

 

Whilst this role is aligned to the technical aspects of finance, expect a lot of overlap with the Head of Commercial Finance (interim) hire. So someone who has also owned parts of FP&A would be a plus.

 

 

Why our client is excited about you

My client is looking for someone who thrives in a startup environment. Someone who can move at pace, enjoys being a hands-on leader, and has a ‘fail fast’ mentality.

 

You will have ideally worked in the CleanTech, Energy or Renewable sector before, so you understand the nuances of the industry. If not, then an innovative, PE-backed, fast-growth tech scaleup.

 

Below is the criteria to apply:


- Qualified Accountant (likely ACA or ACCA)

- Operated in a fast growth startup or scale-up (ideally that is VC or PE backed)

- CleanTech, Energy, Renewables, SaaS, Platform, FinTech, or similar sector experience

- Previous experience as a Financial Controller, Group FC, Head of Finance (or similar title) with ‘current’ technical accounting skills and exposure to transformation/change.

- Available to start in January and can commit to a minimum of 6 months

 

 

What you’ll get in return

The chance to work for a market-first CleanTech, a load of flexibility on working patterns and remote work, and one of the most inspiring teams I know. And the chance to take on some interesting challenges – a good one for the CV.

  • £450-600 per day on an initial 6-month contract
  • Possible 6-month extension or permanent conversion/contract
  • Remote contract* expectation of 1-2 days onsite every 2-3 weeks

 

 

We invite applications from all qualified candidates who believe they meet the requirements of the role, whilst supporting and promoting equality and diversity to create an inclusive working environment for all.

If this advert sounds like it was written for you then please apply to this advert or reach out to andrew@core3.co.uk.

 

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