Interim FP&A Manager
Global Accounting Network is partnering exclusively with a high-growth, PE-backed SaaS business who are looking an Interim FP&A Manager (6-month contract with a strong likelihood of extension) to support a £100m ARR SaaS asset - looking to complete a strong growth journey through acquisitions led by a reputable mid-cap UK private equity fund.
Responsibilitie s
- :Lead the preparation, analysis, and presentation of budgets, monthly forecasts (ARR/MRR), board packs, and investor reporting
- .Own investment decision support, including building detailed business cases, calculating NPV, IRR, payback periods, and tracking actual performance against approved investment budgets
- .Deep-dive into SaaS unit economics: CAC, LTV, LTV:CAC ratio, payback periods, gross margins, contribution margins, churn, cohort analysis, and Rule of 40 performance
- .Support financial due diligence, integration planning, and post-acquisition performance tracking
- .Partner with senior stakeholders across Sales, Marketing, Product, and Operations to provide actionable financial insights and commercial recommendations
- .Develop financial models from scratch, including driver-based forecasting, scenario modelling, and long-range planning
- .Create and maintain Power BI dashboards for real-time visibility of key metrics (CAC, retention, efficiency ratios, etc.)
- .Identify opportunities for process improvement and automation within FP&A to support the next phase of growth and potential exit planning
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Requirement
- s:ACA, ACCA, or CIMA qualified (Big 4 background strongly preferred
- ).Proven FP&A experience in a SaaS or high-growth technology business (multi-site / multi-entity experience also welcome
- ).Strong commercial experience in investment appraisal (NPV, IRR, ROI) and working directly with PE/investment team
- s.Hands-on experience building complex financial models from scratc
- h.Excellent understanding of SaaS metrics (CAC, LTV, churn, ARR build, cohort analysis, etc.
- ).Power BI / dashboarding experience is a significant advantag
- e.Outstanding communication and stakeholder management skills – confident presenting to both operational leaders and PE investor