Interim FP&A Manager

Walker Hamill; Greater London; Hybrid; GBP 70,000 - 90,000; Part time

Job summary

Walker Hamill is seeking an Interim FP&A Manager for an initial 3-6 month assignment in London. You will own monthly management accounts, KPI reporting and Board packs, plus lead budgeting, forecasting and long-range planning with strong data quality and systems improvements.

The role offers high exposure to senior leadership, with a hybrid London working pattern. You will bring ACA/ACCA/CIMA, strong FP&A and management accounting experience, advanced Excel and financial modelling, and a track

Qualifications

• Qualified accountant with FP&A and management accounting experience.
• Experience in a fast-paced commercial environment, ideally SaaS/recurring revenue.
• Strong budgeting, forecasting and month-end reporting abilities.

Responsibilities

• Lead monthly management accounts, KPI reporting and Board packs.
• Provide variance analysis and commentary on key drivers.
• Support annual budgeting, forecasting and long-range planning.
• Develop robust financial models including scenarios and sensitivities.
• Partner with commercial/operational teams to improve performance.

Skills

FP&A

Budgeting

Forecasting

Excel

Financial modelling

Stakeholder mgmt

Communications

SaaS exposure

Education

ACA/ACCA/CIMA

Tools

Salesforce

Power BI

SQL

Databricks

Job description

Employment Type: Interim (Initial 3-6 Months, Immediate Start Required)

Location: London/Hybrid

REF: NBO54093

Our client, a private equity-backed, international SaaS business is looking for an Interim FP&A Manager for an initial 3-6 months. Reporting to the Global Head of FP&A, you will take ownership of core financial planning, reporting and management accounting activities, while also helping to improve the quality of financial data, reporting processes and systems. This is a highly visible role offering regular interaction with senior leadership, the Executive team and private equity investors. Immediate start required.

Key Responsibilities

• Lead the preparation and continuous improvement of monthly management accounts, KPI reporting and Board packs.
• Produce insightful monthly variance analysis against budget, forecast and prior year, providing clear commentary on key business drivers.
• Support and lead elements of the annual budgeting, forecasting and long-range planning processes across the P&L, balance sheet and cash flow.
• Develop and maintain robust financial models, including scenario analysis, sensitivities and medium-term strategic planning.
• Partner with commercial and operational stakeholders to provide financial insight, challenge assumptions, support investment decisions and improve business performance.

Reporting & Process Improvement

• Reconciling ARR across Salesforce and existing reporting models to establish a reliable source of truth.
• Supporting the reconciliation of recurring revenue metrics to statutory (GAAP) reporting.
• Improving management information by standardising manual reporting processes and enhancing data integrity.
• Identifying opportunities to streamline month-end, forecasting and reporting processes, reducing manual effort and increasing efficiency.
• Working confidently within an evolving systems landscape where Excel remains the primary reporting tool while wider ERP and data improvements are delivered.

Skills

• Qualified accountant (ACA, ACCA or CIMA) with previous experience in FP&A and management accounting, ideally gained within a fast-paced commercial environment.
• Strong management accounting and FP&A experience, including budgeting, forecasting and month-end reporting.
• Advanced Excel and financial modelling skills, with the ability to build and maintain complex models across all three financial statements.
• Experience working with large and often imperfect datasets, including reconciliation, validation and data cleansing.
• A pragmatic, proactive approach with the ability to deliver high-quality outputs in a changing environment.
• Excellent communication and stakeholder management skills, with confidence presenting financial information to both finance and non-finance audiences.

Experience within a SaaS or recurring revenue business would be highly advantageous, particularly with exposure to metrics such as ARR, retention and customer economics.

Additional experience that would be beneficial includes:

• Private equity-backed or venture-backed businesses.
• Multi-entity and multi-currency environments.
• Salesforce, Power BI or other business intelligence tools.
• SQL, Databricks or modern data platforms.
• An interest in leveraging AI tools to improve reporting and finance processes.

Please note that due to the expected volume of applications, we will only be able to respond to those candidates whose experience matches the requirements of our client. We are sorry, but if you have not heard from us within the next ten days, please assume you have been unsuccessful on this occasion.