The Company My client is a major power company at the forefront of the energy transition, backed by a global energy and commodities leader. With operations across the UK and Europe, the business delivers reliable, flexible, and increasingly decarbonised power through a portfolio spanning thermal generation, battery storage, and carbon capture projects. The Opportunity This is an exceptional opportunity for a commercially minded Tax Manager to lead on all aspects of UK and international tax compliance and reporting, while playing a key role in shaping the group’s long-term tax strategy. You’ll work closely with the CFO, finance leadership, and external advisors on M&A activity, group restructuring, and process improvement initiatives. This is a hands-on, high-profile role offering genuine breadth, perfect for someone who enjoys both the technical side of tax and influencing at senior level within a dynamic, growing business. Key Responsibilities • Lead and oversee UK and international tax compliance, reporting, and filings. • Partner with external tax advisors and internal finance teams to deliver tax initiatives and ensure best practice. • Support M&A, internal restructuring, and cross-border projects from a tax perspective. • Manage relationships with HMRC and external advisors, including handling audits and enquiries. • Strengthen internal controls and identify opportunities for process improvement. • Provide proactive tax advice and training to the wider finance and leadership teams. About You • Professionally qualified (ACA, ACCA, CTA or equivalent). • Minimum 5 years’ experience in tax, ideally gained within industry or a mix of practice and in-house. • Strong knowledge of UK corporate tax, and international tax .