Part-time Finance Manager

Core3 Group

  • London
  • £60,000 per year
  • Permanent
  • Part-time
  • 1 month ago
  • Apply easily
Job Title: Financial Manager (Part-Time)Location: Hybrid (London HQ + remote flexibility)
Reporting to: Co-Founders
Type: Part-time (1-2 days/week, flexible schedule)Why join our client?Our client is a fast-scaling, founder-led fintech. Their platform is already trusted by multiple global banks and backed by leaders across banking, law, and technology.With a high-performance culture and precision mindset, they deliver enterprise-grade solutions in a sector still run on legacy infrastructure. This is a unique opportunity to join a mission-driven company with a clear product-market fit, elite client base, and runway for growth.We believe in high standards and high trust. You'll work alongside ambitious, thoughtful people in a flexible environment where impact is what counts.How you'll make an impactThey are hiring a part-time Financial Manager to own and elevate the finance function. This is a hands-on, detail-oriented role ideal for someone who thrives in fast-paced, high-integrity environments.You'll lead the day-to-day financial operations, ensure clean, compliant records, and provide clear reporting to founders and the board. You'll also bring a strong control mindset - proactively managing risk, spotting issues early, and delivering insights that support strategic decisions.If you're a sharp, experienced finance lead who wants to make a real difference - without the grind of full-time hours - this role offers challenge, autonomy, and influence.Key ResponsibilitiesCore Finance & Control
  • Oversee all transactional accounting: invoicing, AP/AR, payroll, expenses, reimbursements, and credit control
  • Manage monthly bookkeeping and reconciliations (bank, cards, Xero)
  • Prepare and maintain the general ledger and journal entries (accruals, prepayments, depreciation)
  • Handle cash flow tracking, burn rate, and liquidity management
  • Own financial workflows and controls across billing, approvals, and payments
Reporting & Insights
  • Lead month-end and year-end close, coordinating with our accountants
  • Deliver internal reports on budget vs. actuals, performance by product or function, and key KPIs (CAC, CLTV, margins, runway, ROA/ROE)
  • Prepare board and investor materials on financial performance
  • Provide ongoing cash forecasting and scenario planning
Tax & Compliance
  • Oversee VAT, PAYE, HMRC filings, and ensure MTD compliance
  • Support international tax considerations (e.g. FX, transfer pricing if applicable)
  • Ensure all compliance requirements are met, accurately and on time
  • Liaise with HMRC and external accountants as needed
Payroll & Employee Expenses
  • Check the payroll processing (incl. pensions, HMRC returns, and payslips)
  • Manage expense reimbursement flows, mobile receipt capture, and approval layers
  • Maintain employee finance records (leave, deductions, benefits, etc.)
What We're Looking ForMust-Have Experience
  • 5-10+ years in financial management, ideally in high-growth or regulated environments
  • Use of Xero would be beneficial, including payroll, reporting, reconciliations, and bank feeds
  • Strong understanding of

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