Global Mobility Tax Director

Overview:

We are a 20-year-old boutique tax advisory firm, specializing exclusively in global mobility and cross-border individual taxation. With ~15 people and ~100 recognizable clients, we operate with Big Four technical depth but a lean entrepreneurial culture.

We are looking for a Global Mobility Tax Director to work directly alongside the founding partners, someone with 10+ years in US individual / global mobility tax (not corporate tax), a builder's mindset, and the ambition to grow a business, not just service one. This is a strategic hire with a real path to partnership.

Responsabilities:

Client Leadership Serve as primary strategic advisor for a portfolio of multinational clients

• Lead complex global mobility tax engagements end-to-end
• Advise on international assignments, relocations, remote workforce strategies, and business traveler compliance
• Support clients on equity compensation and cross-border tax planning (RSUs, stock options)
• Oversee global compensation delivery, payroll reporting, and tax policy design

Technical Delivery Review and oversee complex U.S. individual income tax returns and mobility-related deliverables

• Advise on tax equalization, shadow payroll, FBAR, FATCA, and related compliance matters
• Key corridors include US-UK, US-Spain, and growing US-LATAM work

Business Development & Strategy Develop and execute strategic marketing and growth initiatives

• Build new client relationships and referral partnerships
• Identify expansion opportunities within existing accounts
• Contribute to GMT's long-term growth strategy alongside founding partners

Team Development Mentor and develop junior team members

• Contribute to building internal processes and best practices
• Participate in technology and AI-enabled transformation of service delivery

Qualifications

• 10+ years of experience in global mobility tax or US international individual taxation(note: corporate tax, transfer pricing, or international corporate tax backgrounds are not a match for this role)
• Deep technical expertise in US individual tax matters across borders
• Proven ability to manage client relationships independently Entrepreneurial mindset you're a builder, not just a technical executorComfort operating in a lean, fast-moving environment where not everything is definedNice to Have:
• CPA, JD, EA, and/or MST credentials
• Exposure to cross-border equity compensation (helpful but not a must)
• Familiarity with AI and technology tools applied to tax service delivery