Infinitesima
Head of FP&A
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Would you like to be instrumental in enabling the next generation of semi-conductors?
Are you comfortable working in a fast paced, scale up environment? If so, we can offer you a unique opportunity to step into a newly created Head of FP&A role at Infinitesima, building a finance capability that directly shapes how we scale. You’ll be the CFO’s analytical partner, owning the models, the insights, and the story behind the numbers. You’ll work across the business, turning complex data into decisions that actually drive outcomes.
If this sounds like you, read on….
Reward and Benefits:
- £80,000 to £90,000 depending on experience
- 25 days annual leave, death in service and private health care benefits, personal pension contributions of 4% with salary sacrifice and a generous EMI Share scheme
Based in Abingdon, Oxford, UK, we are a high calibre team of 100 plus people and we are growing fast. We are backed by global financial and industry investors including Applied Ventures, the strategic venture arm of the industry leading equipment company.
About the role:
This is a hands-on, high-impact role where you are building and owning the financial planning and analysis function from the ground up. You are partnering closely with the CFO while working across engineering, manufacturing, supply chain, commercial, and HR teams.
You are not waiting for data, you are actively shaping it, challenging it, and turning it into clear, decision-ready insight.
No two days are the same, a typical month as Head of FP&A could look like this:
- Owning and delivering monthly forecasts, clearly linking risks to cash runway and business outcomes
- Building and maintaining driver-based financial models across headcount, revenue, supply chain, and capital projects
- Owning revenue forecasting, creating a pipeline-backed view the board can rely on
- Partnering with commercial teams on pricing and deal structure, making cash implications visible upfront
- Working with engineering and manufacturing teams on project costs and capital planning
- Promoting visibility in supply chain commitments and cash flow impacts
- Partner with colleagues across the globe as the company continues its international expansion
- Producing board-quality financial materials and supporting investor-facing outputs
- Translating management accounts into forward-looking insight — what happened, why it matters, and what’s next
- Implementing KPI-driven reporting that tells the story of the business, not just the numbers
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Who we are looking for:
To succeed as a Head of FP&A, we do need you to have demonstrable experience of working in environments where processes are being built, not inherited. Candidates from a scale-up background would be ideal.
We are also looking for:
- Accountancy Qualified (ACA, ACCA or CIMA) with strong FP&A experience
- Building and owning financial models in complex business environments
- Partnering effectively with non-finance stakeholders, influencing engineers, scientists, and commercial teams
- Operating with autonomy, making judgement calls and owning outputs
- Communicating financial insights clearly and concisely
Nice to have:
- Supporting a fundraise or building investor-facing financial models
- Familiarity with manufacturing or supply chain finance
- Experience in investor-backed businesses and understanding investor expectations
- Commercial finance within long sales cycles or capital equipment environments
Education / Qualifications:
Either a relevant finance qualification or equivalent experience gained through a clear professional pathway.
The five Cs:
- Customer Focused – Staying close to customer needs and consistently delivering value that builds trust.
- Caring – Creating a supportive environment where people look out for each other and can thrive.
- Collaborative – Sharing ideas openly, communicating clearly, and working together to solve problems.
- Commitment – Taking ownership, following through on promises, and acting with integrity.
- Continuous Improvement – Always learning, challenging the status quo, and improving how we work and deliver.
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A bit about us:
Infinitesima is a privately owned company founded in 2001, as a spin-out of the University of Bristol, by CTO Professor Andrew Humphris. Our dynamic team of scientists and engineers is focused on enabling the next generation of semiconductor devices through delivery of innovative products to customers around the world.
Our strength lies in the varied perspectives that come from different cultures, experiences, and identities. We believe that true innovation is fuelled by collaboration, locally and globally. We strive to foster an environment where everyone can contribute meaningfully and thrive. If you require adjustments to take part in the recruitment process, please let us know, we’ll do our best to support you.
Note to recruitment agencies: Infinitesima Ltd only works with approved agencies and does not accept unsolicited agency CVs. Please do not submit candidate details in response to this advert, or to any Infinitesima Ltd employees. Infinitesima Ltd is not responsible for any fees related to unsolicited CVs.
A note on how we run interviews:
We use AI only to transcribe our interviews so we can focus fully on you instead of scribbling notes. The AI does not take part in any decision making at any stage. All hiring decisions are made by real humans based on the conversation we have with you.
Location and work pattern:
All of our new UK team members are asked to work on site here at Abingdon during their first three months with us. We offer flexible, hybrid working where possible upon completion of probation.
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