Tax Manager

Help Shape the UKs Energy FutureTax Manager Opportunity with the Civil Works Alliance (CWA), Supporting Sizewell CAs part of the CWA (Civil Works Alliance), you will support the building of Sizewell C. Sizewell C will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes and will play a key role in our energy future, supplying reliable, clean electricity for at least 60 years.This role will be within theCWA Wide Section.What will you do?The Tax Manager will deliver comprehensive employment tax compliance and advisory support across the Civil Works Partnership - an alliance of Balfour Beatty, Laing O 'Rourke and Bouygues Travaux Publics - whilst coordinating broader UK tax matters at a managerial level. Operating within a complex construction and infrastructure alliance environment, this role will require strong employment tax expertise and sound commercial judgment across other tax areas, with responsibility for managing stakeholders and deliverables and escalating complex technical matters to specialist tax teams where required.Key responsibilities will include:Leading employment tax compliance (PAYE, National Insurance, benefits, FPS/EPS submissions) and acting as subject matter expert for employment tax mattersEnsuring IR35 compliance across the organization and preparing Status Determination Statements (SDS)Advising HR and Procurement teams on engagement structures and employment tax implicationsIdentifying, assessing, and mitigating employment tax risks across the partnershipOverseeing CIS and VAT compliance, filings, and operational support (including DRC matters)Coordinating R&D Tax Credits (RDEC) claims, documentation, and stakeholder managementMaintaining the tax risk register and ensuring robust compliance processes and controlsMonitoring legislative changes and supporting tax policy developmentCoordinating HMRC inquiries, audits, and communications with external tax advisorsProviding business partnering advice to Finance, HR, Procurement, and Commercial teams on tax considerations in contracts and operationsBuilding and maintaining effective relationships with internal teams, independent practitioners, and external advisorsActing as a key coordination point across all tax matters within the organisationWhat are we looking for?The ideal candidate will bring strong employment tax and IR35 expertise combined with sound understanding of the broader UK tax landscape. You will be an experienced tax professional with excellent stakeholder management skills, strong commercial judgment, and the ability to coordinate complex tax deliverables effectively within a matrix environment.Essential Knowledge, Skills and Experience:Strong employment tax and IR35 expertise with a proven track record in compliance and advisoryGood understanding of VAT, CIS, and UK tax mattersExperience managing tax compliance and delivering multiple tax deliverablesStrong judgment and risk awareness with the ability to identify and escalate complex issues appropriatelyExcellent communication skills with the ability to explain technical matters to non-tax stakeholdersProven ability to manage stakeholders across multiple functions and levelsExperience coordinating tax matters and working with external advisorsProfessional tax qualification (CTA, ACA, ACCA or equivalent) or equivalent practical experienceFamiliarity with tax compliance systems and processesDesirable Qualifications and Experience:Chartered Tax Adviser (CTA) or similar professional qualificationConstruction, infrastructure, or major project experienceExposure to R&D Tax Credits (RDEC) and associated documentation requirementsExperience working within complex, matrix, or alliance-based organizational structuresExperience supporting HMRC inquiries and audit processesKnowledge of engagement models and contractor management within construction environmentsExposure to strategic tax planning and policy developmentWhat we will offer you?The CWA is a single delivery organisation made of up of the client (Sizewell C) and three parent companies - Balfour Beatty, Bouygues and Laing O'Rourke - which offer industry leading packages including market leading salaries, generous annual leave entitlements, pension scheme and other flexible benefits.About UsThe CWA celebrates the creativity and innovation that comes from a diverse workforce, and we welcome applications from people of all backgrounds especially those from under-represented communities. Our project is built on five core values: Humility, Positivity, Respect, Solidarity, and Clarity. By joining us, youll be encouraged to bring your whole self to work, speak up, and share your ideas. We encourage applications from all suitably qualified candidates, regardless of gender, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, or pregnancy and maternity. We are committed to protecting your privacy. If you decide to apply, please avoid including sensitive personal data in your CV.TPBN1_UKTJ