Global Mobility Tax Senior Associate

Company Description 

Join the leader in global work. Vialto helps leading organizations identify, develop, and execute their workforce priorities with confidence. Our practice areas include global tax, immigration, rewards, advisory and Vialto private and our team is the gold standard in navigating the complexities of cross-border compliance, and workforce strategies. We look for people our clients and assignees can count on to thoughtfully deliver clear solutions to complex problems.  

To be the best in the business, we cultivate a dynamic, highly collaborative culture that fuels the growth of our people. We invite you to inquire boldly, learn deeply, and grow endlessly with us. You’ll work alongside recognized experts, shaping people-first, technology-driven solutions that drive the future of work. We help our clients achieve their goals and imagine new possibilities. And we can do the same for you. Whatever your aspirations, Vialto can help you find your way. 

Job Description 

In this role, you will play a key part in ensuring compliance with tax regulations and optimizing tax processes for employees on international assignments. You will manage the tax implications of global mobility, supporting seamless transitions for employees working across different countries through consulting opportunities. Your primary objective will be to minimize tax-related risks and costs while ensuring that both the organization and its employees remain fully compliant with applicable tax laws.  

Responsibilities for this position include but are not limited to:   

• Advise internal and external stakeholders on tax planning, withholding obligations, and social security contributions. 

• Partner with Finance and HR teams to ensure accurate payroll tax calculations, reporting and compliance. 

• Provide guidance on assignment structures, tax treaty applications and tax-efficient compensation and benefits. 

• Educate employees on their tax obligations and the implications of international assignments, including tax equalization and protection policies. 

• Analyze compensation and payroll data to calculate tax liabilities and identify optimization opportunities. 

• Prepare, review, and file tax returns and related deliverables for globally mobile employees accurately and within deadlines. 

• Prepare supporting applications and documentation to enhance employees’ tax positions and ensure compliance. 

• Maintain detailed tax records and documentation to ensure accuracy and audit readiness. 

• Monitor developments in international tax legislation and assess their impact on clients and assignments. 

• Prepare and present tax reports for management, auditors and tax authorities, highlighting key insights and recommendations. 

• Conduct research on country-specific tax matters and collaborate with tax subject matter experts to deliver integrated solutions. 

• Serve as the primary point of contact for clients, providing proactive support and regular updates on engagement progress. 

• Manage engagement finances, including billing, collections and KPI tracking. 

• Support the implementation of Global Mobility Tax strategies to minimize liabilities for both clients and employees. 

• Identify new business opportunities within the existing client base and contribute to portfolio growth. 

• Build and maintain strong client relationships and monitor market trends to identify areas for expansion. 

Qualifications: 

• University degree in Tax, Accounting, Law or a related field. 

• Experience in global mobility taxation. 

• Excellent communication and client-facing skills. 

• Analytical mindset with strong attention to detail. 

• Ability to manage multiple projects and deadlines across jurisdictions. 

• Proficiency in Microsoft Office and experience with reporting/dashboard tools. 

• Ability to work collaboratively across internal teams and with external partners. 

Why Join Us: 

• Be part of a global, dynamic team with exposure to international clients and jurisdictions. 

• Opportunity to develop expertise in social security and global mobility. 

• Participate in projects that have a direct impact on client compliance and organizational success. 

• Supportive work environment with training and professional growth opportunities. 

Additional information: 

• London location 

• Regular contract 

• Hybrid model (3 days in the office) 

We are an equal opportunity employer that does not discriminate on the basis of any legally protected status.  

Please note, AI is used as part of the application process.