OakRock is recruiting an experienced Financial Controller to join a medium sized business on an interim basis to take ownership of financial operations, with a particular focus on VAT (including partial exemption), billing, invoicing, and revenue processes.This is a hands-on, operational role suited to someone who is comfortable operating across the full breadth of finance, bringing structure, clarity, and control to a complex and evolving environment.The roleYou will be responsible for:Acting as the in-house VAT expert, with specific responsibility for designing and embedding a partial exemption processLeading the development and implementation of robust billing and invoicing processes, including templates and standardised workflowsManaging end-to-end invoicing and collections across a broad customer baseTaking ownership of a detailed data collection and process scoping exercise to improve financial accuracy and consistencySupporting and improving revenue recognition and financial controlsWorking closely with internal stakeholders to ensure timely, accurate, and pragmatic financial decision-makingProviding clear, commercially focused communication around billing and cash collection activitiesThe environmentBroad, hands-on Financial Controller-style role within a complex operating environmentRequires someone comfortable operating both strategically and operationallyHybrid working What we''re looking forProven experience as a Financial Controller or senior finance professional