Senior Manager, Global Tax

Department: Global Mobility and Tax Advisory

Employment Type: Permanent

Location: United Kingdom

Reporting To: Head of Global Mobility

The world of work is constantly changing, and Global Mobility is no longer simply about international assignments and secondments. Businesses increasingly operate across borders, bringing both opportunity and complexity.

Our Global Mobility team helps clients navigate that complexity, supporting international expansion, global remote working and mobility programmes. Working with our global partner network, we provide support across immigration, permanent establishment, income tax, social security, payroll tax and Global HR Services, complementing activpayroll’s global payroll offering.

As Senior Manager, you will play a key role in delivering and growing our mobility tax services. You’ll manage a portfolio of international clients, provide technical expertise, develop trusted client relationships and support the continued development of our team and services.

• You will manage a portfolio of international clients, delivering mobility tax compliance and advisory services.
• You will act as a trusted point of contact for clients, providing practical advice on UK income tax, payroll tax and social security matters.
• You will oversee tax compliance activity, including UK tax returns, shadow payrolls and year-end reconciliations, working with our global partners to coordinate requirements in other jurisdictions.
• You will review and sign off UK tax returns and provide technical guidance on complex mobility tax matters.
• You will build strong relationships with our global partner network to ensure seamless service delivery across jurisdictions.
• You will support and develop junior team members, sharing technical knowledge and helping them grow as professional advisers.
• You will contribute to business development, including prospective client conversations, proposals and RFP responses.
• You will work with the Global Mobility leadership team to identify opportunities to improve and grow our services.

• Extensive experience in international mobility tax, spanning expatriate tax compliance and advisory work.
• Strong UK tax knowledge, with experience preparing, reviewing and signing off UK tax returns and advising on income tax, payroll tax and social security.
• Excellent client relationship skills, with the confidence to make complex tax matters clear and practical.
• Excellent organisation and attention to detail, with the ability to manage multiple clients and deadlines.
• Commercial confidence, including discussing services with prospective clients and contributing to proposals and RFPs.
• A collaborative approach and the ability to build effective relationships with colleagues and partners around the world.
• A genuine interest in developing others and helping to grow our Global Mobility offering.