Finance Assistant in London

Zinc is growing fast, and our finance operations need to keep pace. Right now, day-to-day AP/AR, mailbox management and debt chasing sit with our Ops Analysts — brilliant generalists, but not finance specialists, and it's pulling them away from the work they're best at. We're hiring a Finance Assistant to take full ownership of this. You'll be the person who keeps invoices moving, mailboxes clear, and debtors chased, turning a process that currently takes days into one that takes hours. It's a hands-on, detail-heavy role to start, working closely with our Senior Finance Manager, with a genuine path into a broader finance career for the right person.

Key Responsibilities

• Own the shared Finance Mailbox, responding to and resolving queries daily.
• Handle daily AM-Ops requests, acting as the finance point of contact for the Account Management team.
• Manage subscription creation and billing setup on a weekly basis.
• Run weekly reconciliations across accounts.
• Own debt chasing, working proactively to keep debtor days down.
• Deliver the monthly invoicing cycle and manage overages.
• Own accounts payable end-to-end — processing supplier invoices, raising payment runs, and ensuring correct coding, approvals and timely payment.
• Help close the books to a tight cadence: OPEX by WD1, revenue by WD3.
• Assist with VAT returns and other routine statutory and compliance filings.
• Use Zinc's tools (Xero, HubSpot, Stripe, Sigma) day-to-day — and lean on AI tools like Claude to work efficiently, rather than defaulting to manual spreadsheet work.

Skills, Knowledge and Expertise

• 6 months - 1 year of experience in a finance role such as AR Assistant, Credit Controller, AP Assistant or Finance Assistant.
• Working knowledge of Xero (or similar accounting software), reconciliations and month-end close (accruals, prepayments, VAT).
• Comfortable adopting AI tools (we use Claude) as part of your everyday workflow.
• A university degree is enough - we don't require a professional accountancy qualification.
• Diligent with a genuinely high attention to detail, small errors in this role have real knock-on effects.
• Personable and proactive, you'll be chasing people (customers, colleagues) regularly and need to do it with tact.
• Real ambition to build a career in finance, this role will be grunt-heavy for the first six months but there is huge scope for growth.

What we offer

• 24 days holiday + Bank Holidays + your birthday off.
• £1200 annual benefits allowance (ThanksBen, from month 2).
• Early finish Fridays (16:00).
• Yearly company retreat abroad.
• 30 days to Work from anywhere.
• Enhanced Maternity, Paternity, and Adoption Leave (13 weeks full pay, 17 weeks half pay, then SMP for maternity, 1 month full pay for paternity/adoption).
• Statutory pension with NEST (3% employer, 5% employee).
• Zinc shares, issued through the EMI Scheme.
• Unlimited access to Spill Therapy.
• Company socials, quarterly team socials.
• Free Monday lunches.
• Nursery workplace benefit scheme (Yellownest).
• Option to lease an electric car through Electric Car Scheme.
• Celebrated Zinc anniversaries.