Accounting & Ops

One Day Agency is an integrated advertising and marketing agency with offices in Manchester, London, Warsaw and Paris. In just six years, we’ve built a team of 16 dynamic professionals working with brands of all sizes, from small e-commerce businesses to F1 teams.

We specialise in delivering high-impact advertising campaigns across OOH, TV, Radio, and digital channels, helping brands grow through strategic media planning and buying.

We’re looking for a highly organised and detail-oriented Accounting & Ops to support the accounting and finance operations of the business reporting directly to the CEO. This is a pivotal role working closely with our leadership and operations teams to manage day-to-day accounting and finance functions, including accounts payable, payroll, reconciliations, cashflow, and management reporting.

You’ll need to be confident working independently, proactively managing month‑end processes and reporting, with a solid understanding of core accounting principles. Experience in the media/advertising industry is highly desirable.

• Manage accounts payable and receivable processes
• Reconcile management accounts, P&L, balance sheets, and cash flow
• Process payroll and manage pension contributions
• Handle accruals and prepayments accurately
• Issue client invoices and ensure timely follow‑up on payments
• Maintain accurate financial records and documentation
• Prepare monthly financial reports for internal stakeholders
• Assist with budgeting and forecasting
• Ensure compliance with internal financial controls and HMRC regulations
• Liaise with external accountants, suppliers, and internal teams

• Proven experience working with Xero and CRM systems
• Demonstrated competency in:
• Accruals and prepayments
• Reconciliation of management accounts
• P&L, balance sheet, and cash flow reporting
• Payroll processing
• Invoicing and payables
• Previous experience in a finance/accounts assistant role
• Strong Excel/Sheets and general IT skills
• Excellent attention to detail and organisational skills
• Comfortable working independently and prioritising tasks
• Media/advertising industry experience preferred

🏡 Flexible Work: WFH every Friday + 20 additional WFH days per year

🌴 Annual Leave:
Up to 30 days

📚 Professional Growth:
Unlimited training and development budget

🖥 Top-tier office setup with high-end equipment

🎁 Additional perks listed on our Careers page.