Senior Commercial Finance Manager (Permanent)

Mustard is looking for an enthusiastic and experienced Finance Manager to join our growing team. As Finance Manager – UK at Mustard, you'll be at the heart of our UK and European finance function, managing day-to-day bookkeeping, ensuring accurate compliance, and working hand-in-hand with our external accountant to meet all statutory requirements. You'll lead the UK delivery of our finance processes, providing timely data and analysis to support commercial decision-making across our growing global business.

This role is ideal for a detail-driven, fully qualified finance professional who's excited by the pace and variety of a fast-scaling global e-commerce brand. You'll work closely with our Head of Finance and play a key part in strengthening Mustard's financial foundations and commercial clarity. This is a fantastic opportunity for someone who wants to step into a business-facing role, gain exposure to a global setup, and grow into future leadership as our finance team expands.

Take ownership of finance operations in a fast-growing global e-commerce brand:

• Work on exciting projects that directly impact customers around the world
• Maintain accurate bookkeeping in Xero for UK and European operations, ensuring transactions are correctly coded and documented
• Ensure a timely month-end close and deliver clean books for the Head of Finance to prepare management accounts
• Coordinate accruals, prepayments, and journals with the Head of Finance oversight
• Finalise year-end close and ensure financial records are complete and audit-ready
• Monitor data flows from Shopify and our Inventory Management System (CIN7) into Xero to ensure consistency and accuracy

Compliance + External Accounting:

• Assist with the preparation of statutory accounts and the corporation tax return, ensuring accurate data handover
• Coordinate with the UK accountant on tax, compliance and reconciliation regularly
• Maintain compliance-ready finance records and provide timely responses to accounting queries
• Collaborate with the Australian Business Operations Manager to ensure global consistency in finance practices

Accounts Payable + Receivable:

• Oversee wholesale debtor management and follow-up with the sales team on overdue accounts receivable - UK, Europe and USA
• Assist in the setup of new supplier and customer accounts, ensuring proper documentation

Payroll + Banking:

• Oversee monthly UK payroll in coordination with the external accountant
• Review pension scheme submissions and payroll journals
• Conduct bank and credit card reconciliations regularly
• Monitor FX exposures and support the Head of Finance in assessing implications

Support the preparation of monthly management accounts and performance commentary. Provide ad hoc analysis and financial data for the wider team. Monitor financial controls and workflows for efficiency and risk mitigation. Align with the Head of Finance on commercial priorities and budgeting needs across departments. Assist in consolidating data across multiple currencies and markets (UK, EU, US, AU) for group-level reporting.

You're a fully qualified accountant (ACCA, ACA, or CIMA). You have at least 3 years' post-qualification experience in a hands-on finance role, ideally with exposure to international operations. You're confident working independently, liaising with external accountants, and keeping financial operations accurate and on track. You have a strong understanding of UK VAT and EU intra-community sales. You're experienced with Xero and comfortable using cloud-based finance systems. You're competent in Excel or Google Sheets and confident working with multiple currencies. You've worked in an e-commerce, retail, or inventory-based business.

Flexible working hours, hybrid office schedule (3 days in-office), paid personal + carers leave, competitive salary based on experience (£52-£55k DOE), colourful office space in Camden NW1, your own personal and professional development budget, immediate start to the right candidate, 22 days holiday (plus bank holidays), regular team lunches & creative socials, 50% team discount on Mustard products.