GBS Cost Allocation & Billing Manager (Contract)

City: Slough

Scope of Responsibilities:

Own and manage the end-to-end calculation of GBS cost allocations and cross-charges
Review, maintain and enhance allocation models to support forecast, interim and year-end billing cycles
Work closely with Finance, GBS and business stakeholders to validate allocation methodologies, cost drivers and billing structures
Support the refresh and validation of financial models using actuals and forecast data
Monitor actual costs against forecast allocations and investigate variances
Analyse and resolve cost, allocation and billing queries within SAP
Collaborate with the GBS billing team to ensure timely and accurate execution of service billings
Ensure all calculations, assumptions and supporting documentation are appropriately controlled, referenced and audit-ready
Provide insight and recommendations to improve the efficiency, accuracy and governance of the cost allocation process
Support the successful delivery of Finance Transformation milestones relating to shared service cost recovery and charging

Skills / Experience

Qualified or part-qualified finance professional (ACA, ACCA, CIMA or equivalent experience).
Strong finance, management accounting, cost allocation or financial analysis background.
Advanced Excel skills, including experience building and maintaining financial models.
Experience working with SAP and investigating transactional and cost data.
Strong analytical and problem-solving skills, with exceptional attention to detail.
Ability to manage large datasets and perform complex reconciliations.
Proven stakeholder management and communication skills across Finance and operational teams.
Experience of shared services, intercompany billing, cost allocations or service recharging processes.
Ability to work independently and manage competing priorities in a fast-paced environment.

Desirable

Experience within a large multinational organisation
Experience supporting Finance Transformation or ERP-enabled change programmes
Knowledge of transfer pricing, service recharges or intercompany cost recovery processes
Experience working with shared service centres or global business services organisations