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GLOBAL HEAD OF US WITHOLDING TAX FILING SERVICE - US TAX COMPLIANCE KNOWLEDGE REQUIRED £150K - £180K + benefits & equity (Hybrid) London Ref:4152G We are recruiting for our client, a global financial services group who operate cutting-edge electronic brokerage, custody, and trading solutions for their clients worldwide. They are looking to appoint a RegTech Global Head of Product to lead the Group’s new electronic US Withholding Tax Filing As A Service product, designed to streamline the end-to-end process of tax form collection, validation, and filing for Qualified Intermediary (QI) and Non-Qualified Intermediary (NQI) customer firms. The electronic service automates the collection and validation of W-8 and W-9 forms, reconciles tax documentation against client KYC data, and supports the automated filing of Forms 1042-S and 1099 at tax year end. Reporting directly to the UK CEO, duties will include: Maintain and optimise the collection and validation logic for W-8IMY, W-8BEN-E, W-8BEN, W-9, and associated withholding statements, ensuring client-facing clarity and ease of submission.Ensure all processes remain fully compliant with IRS regulations, including Chapters 3, 4, 31, and 61 of the US Internal Revenue Code, and communicate these requirements effectively to clients.Lead client education on QI, NQI, and US payee tax documentation requirements, including designing and delivering training sessions, webinars, and client guides.Act as the primary business owner liaising with technical development and operations teams to translate compliance requirements and client use cases into functional product specifications.Manage the relationship with The Group’s IRS filing vendor, ensuring service reliability, data integrity, and regulatory accuracy across all client submissions.Serve as a subject matter expert to The Group’s cli