FP&A Director

Siena Partnership; Greater London; Híbrido; GBP 110.000 - 150.000; Jornada completa

Descripción de la vacante

Siena Partnership seeks an accomplished FP&A leader to scale planning, budgeting and reporting for a PE-backed SaaS business. You will drive forecasting accuracy, create insights linked to ARR and churn, and embed AI and automation to enhance decision-making.

You will partner with CFO and leadership to support growth, M&A, and international expansion while building scalable FP&A processes and data structures across the group.

Formación

• Senior FP&A leadership in PE-backed SaaS environments.
• Strong understanding of SaaS metrics and recurring revenue.
• Experience working across international markets and managing diverse stakeholders.

Responsabilidades

• Lead budgeting, rolling forecasts and long-term financial planning across international business.
• Establish consistent FP&A processes with clear performance measures and reporting cadence.
• Build models linking ARR, churn, retention to profitability and cash generation.
• Strengthen SaaS reporting including ARR movements, margins and performance vs plan.
• Provide analysis and recommendations to CFO and PE stakeholders.
• Partner with commercial/operational leaders to challenge assumptions and priorities.
• Develop scalable planning tools and data structures for acquisitions.
• Support M&A through financial modelling and integration into group planning.
• Introduce AI and automation into forecasting, reporting and analysis.

Conocimientos

Senior FP&A leadership

SaaS metrics

International stakeholder management

Descripción del empleo

Location: London centric, with regular London attendance and occasional European travel. Open to candidates based anywhere in the UK who can meet these requirements.

The opportunity

A recently acquired, private equity-backed SaaS business with c.80m in annual recurring revenue with ambitions to scale. The business has a European headquarters, a predominantly US customer base and a UK-based finance team.

Working closely with the CFO, you will lead and professionalise FP&A function, building the planning, reporting and commercial insight needed for the next stage of growth. Your focus will be on creating a function capable of supporting continued growth and M&A, while embedding practical uses of AI and automation.

Key responsibilities

• Lead budgeting, rolling forecasts and long-term financial planning across the international business.
• Establish consistent FP&A processes, clear performance measures and a reliable reporting cadence.
• Build financial models linking recurring revenue, customer retention and expansion to profitability and cash generation.
• Strengthen SaaS reporting, including ARR movements, churn, retention, margins and performance against plan.
• Provide clear analysis and recommendations to the CFO, leadership team and private equity stakeholders.
• Partner with commercial and operational leaders to challenge assumptions, assess investment priorities and improve performance.
• Build scalable planning tools, data structures and reporting processes that can accommodate acquisitions.
• Support M&A through financial modelling, scenario analysis and integration into group planning and reporting.
• Introduce AI and automation into forecasting, reporting and analysis to improve efficiency and decision-making.
• Develop FP&A capability and embed sustainable ways of working that continue beyond the assignment.

About you

• Senior FP&A leadership experience within private equity-backed SaaS businesses.
• Experience working across international markets and managing stakeholders in different regions.
• A track record of professionalising FP&A to support growth, ideally within an acquisitive business.
• Strong financial modelling skills and a clear understanding of SaaS metrics and recurring revenue economics.
• Experience improving finance systems, data and processes, with a practical approach to AI and automation.
• A hands‑on, commercially focused approach and the credibility to partner closely with and challenge a CFO.