UK/US Tax Assistant Manager

About the role

Ambition Europe Limited is seeking a UK/US Tax Assistant Manager to join its growing private client team in London. This hybrid position offers the chance to work with internationally mobile individuals, dual nationals, and high‑net‑worth families, providing both UK and US tax compliance and advisory services.

Key responsibilities

• Manage a portfolio of UK and US private clients.
• Prepare and review UK and US personal tax returns.
• Advise clients on cross‑border tax planning and mobility matters.
• Serve as primary contact for clients and external intermediaries.
• Support and mentor junior team members.
• Collaborate with senior leadership on advisory projects.
• Contribute to technology and process‑improvement initiatives.

Required profile

• Experience in UK and US private client tax.
• Strong understanding of cross‑border taxation for internationally mobile individuals.
• Proven client‑relationship management and work‑review experience.
• Relevant qualification such as EA, ATT, CTA, ACA or equivalent.
• Excellent communication and organisational abilities.
• Proactive, collaborative mindset.

Required skills

What we offer

• Exposure to complex international private‑client work.
• Significant investment in tax technology, automation and AI tools.
• Clear progression opportunities within a growing practice.
• Hybrid and flexible working arrangements.