The Accounts Payable Assistant will report into the Group Financial Controller and is responsible for the day-to-day processing within the procure to pay (P2P) and treasury processes, alongside supporting the key processes and procedures of the Finance team.
This role is responsible for the accounts inbox, processing purchase invoices through Fast Four, verifying supplier bank details and the weekly bank upload and matching, and supports the Commercial Sales Accountant with routine sales invoicing and customer chasing. As the first point of contact for supplier queries, this role works issues through to resolution wherever possible, with more experienced members of the transactional team on hand to support with more complex queries.
During month end, this role is key to keeping day-to-day processing running, ensuring the accounts inbox is maintained and invoices continue to be processed.
This role requires high organisation skills, the ability to work independently, strong time management and clear attention to detail. This role will be involved in the development of new processes and systems for the business as it grows over time.
Procure to pay (P2P):
Treasury:
Order to cash (O2C) support:
There will also be opportunities to get involved in other aspects of finance transactional processing, subject to workload.
We are ideally looking for someone with the following skills and experience
Why work for Refeyn?
Compensation and core benefits
Family Friendly Benefits
Refeyn offers the Enjoy Benefits Nursery Scheme to employees after 3 months, and new parents can benefit from up to 17 weeks fully paid maternity, adoption and shared parental leave, 4 weeks fully paid paternity leave, plus an annual allowance for emergency childcare.
Supporting your Development
All employees receive access to Linkedin Learning which offers thousands of courses to support their personal and professional development. We also run frequent training sessions on both hard and soft skills.
Creating an Engaging Culture
Refeyn supports hybrid working where the role allows and offers flexible start and finish times. We also have a subsidised weekly lunch for onsite employees and a vibrant social calendar which includes holiday parties and midsummer festivals plus an annual team budget for managers to plan team-building activities.
Refeyn is proud to use anonymised hiring practices. Identifying information such as a candidate's name, email address, date of birth and photo will not be visible to the hiring manager when they review CVs.

Refeyn is pioneering the next era of molecular analysis with mass photometry, a breakthrough technology that weighs individual molecules with light. Our instruments deliver rapid, direct insights into biomolecular function and structure, accelerating discovery and transforming biotherapeutic development. With 1200+ citations, 600+ global installations, and use in Nobel Prize–winning research, Refeyn is shaping the future of scientific innovation.