Global Mobility Tax Assistant Manager - Southampton

PRO TAX; Southampton; On-site; GBP 50,000 - 75,000; Full time

Job summary

PRO TAX is seeking an Assistant Manager for its Global Mobility practice in Southampton. You will provide tailored expatriate tax advisory, build relationships with corporate clients, and lead cross-border mobility projects while mentoring junior staff and collaborating with specialists to deliver integrated solutions.

The role offers exposure to senior stakeholders and opportunities to develop further qualifications, with a clear path to leadership within a growing advisory team.

Qualifications

• Expatriate tax advisory experience with solid technical knowledge.
• Excellent communication and stakeholder management skills.
• Commercial mindset with strong problem-solving ability.
• Ability to manage multiple priorities in a fast-paced environment.
• Professional qualification required (ATT / ACA / CA / ACCA / CTA).

Responsibilities

• Delivers tailored, practical tax advice to corporate clients and globally mobile workforce.
• Prepares and reviews cross-border tax and social security advice.
• Leads engagements end-to-end and mentors junior team members.
• Supports meetings with Partners/Directors and advises senior leaders on mobility tax matters.
• Collaborates with personal tax, employment tax, immigration and reward specialists for integrated solutions.
• Contributes to business development and identifies opportunities to leverage technology in mobility advisory.

Skills

Expatriate tax advisory

Client & stakeholder management

Commercial mindset

Multitasking in fast-paced env.

Professional qualification (ATT/ACA/CA

Education

Professional qualification (ATT/ACA/CA/ACCA/CTA)

Job description

The Global Mobility team is hiring an Assistant Manager to join its growing practice in Southampton. The role offers strong advisory exposure, working closely with corporate clients and senior stakeholders on complex cross-border mobility matters.

Key Responsibilities

• Client Advisory & Relationships
  • Serves as a primary contact for clients, delivering tailored, practical tax advice
  • Builds long-term relationships with corporate clients and their globally mobile workforce
• Technical Advisory
  • Prepares and reviews complex cross-border tax and social security advice
  • Interprets regulatory changes and guides clients through evolving tax landscapes
• Project Ownership & Leadership
  • Leads engagements end-to-end, ensuring high-quality delivery
  • Oversees and develops junior team members
• Senior Stakeholder Exposure
  • Supports and attends client meetings with Partners/Directors
  • Advises senior leaders and executives on mobility-related tax matters
• Collaboration & Multidisciplinary Work
  • Works closely with personal tax, employment tax, immigration, and reward specialists
  • Delivers holistic, integrated advisory solutions
• Business Development & Innovation
  • Contributes to winning new work and expanding client relationships
  • Identifies opportunities to leverage technology in mobility advisory

Skills & Experience

• Expatriate tax advisory experience with solid technical knowledge
• Excellent communication and stakeholder management skills
• Commercial mindset with strong problem-solving ability
• Ability to manage multiple priorities in a fast-paced environment
• Professional qualification required (ATT / ACA / CA / ACCA / CTA)

Development Opportunities

• Clear pathway to leadership within a growing advisory practice
• Exposure to global clients and cross-border projects
• Opportunities to pursue further qualifications (e.g. CTA) and expand international network

As an employer, we are committed to ensuring the representation of people from all backgrounds regardless of their gender identity or expression, sexual orientation, race, religion, ethnicity, age, neurodiversity, disability status, or any other aspect which makes them unique. We welcome applicants from all backgrounds to apply and would encourage you to let us know if there are steps, we can take to ensure that your recruitment process enables you to present yourself in a way that makes you comfortable.