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King’s Cross, London | £30,000–£35,000 Pro Rata | 24 Hours per Week | Hybrid (1-2 days in office)

Are you an experienced Finance Assistant who enjoys keeping everything organised, accurate and running smoothly? Confident using Xero and looking for a flexible, part-time opportunity where your experience will genuinely make a difference?

Guilford Street Laboratories is looking for a reliable, hands‑on Finance Assistant to join our team.

Working closely with our CFO, you'll take ownership of day‑to‑day bookkeeping and help keep our finances running smoothly. This is a mainly remote position, with regular visits to our King's Cross office.

The Role

You’ll be part of a small, collaborative team, working alongside external accountants, tax advisers and payroll providers.

Your responsibilities will include:

• Managing daily bookkeeping and financial records using Xero
• Processing customer invoices, supplier invoices and payments
• Managing purchase orders through Dext and ApprovalMax
• Coding transactions and preparing online banking payments
• Reviewing and processing employee expenses
• Supporting payroll, VAT and foreign currency transactions
• Preparing journals and assisting with month‑end and year‑end close
• Supporting audits and responding to finance‑related queries

About Us

At Guilford Street Laboratories, we’re helping shape the future of diagnostics. Using advanced machine learning, we’re developing smarter ways to detect and monitor disease, supporting better outcomes for patients worldwide.

What We’re Looking For

We’re looking for someone who can hit the ground running, manage their own workload and take pride in getting the details right.

You’ll need:

• At least 5 years' experience in a similar finance or bookkeeping role
• Strong working knowledge of Xero or similar accounting software
• Experience with VAT, payroll, journals and month‑end processes
• Confidence managing invoices, purchase orders and supplier payments
• Excellent attention to detail, organisation and communication skills
• AAT, CIMA or ACCA qualifications are desirable, as is experience with Dext, ApprovalMax and outsourced finance providers.

What’s On Offer?

• 24 hours per week with mainly remote working
• A varied role with genuine responsibility
• Direct exposure to senior leadership
• Supportive team and excellent work-life balance

Interested?

If you’re an experienced Finance Assistant looking for flexibility, variety and the opportunity to contribute to an innovative business, we’d love to hear from you.

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