Manager - International Social Security Tax - London

Who We Are

At EY, we’re redefining the future of work. As a global leader in assurance, tax, transaction, and advisory services, we empower our people with opportunity, creative freedom, and cutting-edge technology to build a better working world. With over 300,000 professionals and one million alumni, we foster a collaborative and innovative environment where you can grow, lead, and make a lasting impact—at EY and beyond.

Our Clients

Our clients are as diverse as the dynamic industries they operate in—from multinational banks and insurance companies to asset managers and tech startups. They demand responsive, specialist services—and that’s where you come in. With a global skill set, you’ll help our clients navigate complex regulatory landscapes.

The Opportunity

We are seeking an experienced Manager to join our London International Social Security (ISS) team. We're looking for someone who brings technical expertise and change management skills to deliver high-impact communication and engagement strategies. If you're creative, resilient, and passionate about supporting clients across sectors, especially in International Social Security, this could be the ideal role for you.

The Team

EY’s ISS practice is the leading global provider of social security services. The London-based team includes ex-social security administration staff, qualified accountants, and tax advisors with backgrounds in expatriate tax, immigration, and assignment management.

The team supports a wide range of global advisory and compliance work involving individuals relocating to and from the UK, as well as between other country combinations around the world.

What You’ll Do

• Coordinate and manage ISS service delivery for multiple multinational clients
• Own the day-to-day delivery of core global ISS compliance services
• Act as the main point of contact for global clients and build long-term relationships with both corporate clients and assignees
• Manage and coordinate efforts across the London ISS team, our GDS back-office team, and the global EY network
• Monitor and manage account financials proactively
• Provide strategic guidance to help clients reduce/manage global social security liabilities
• Identify cross-selling opportunities within ISS and other People Advisory Services sub-service lines
• Offer technical advice regarding global social security compliance and benefits/healthcare obligations
• Liaise with government departments in the UK and internationally
• Draft client correspondence and lead ad hoc projects
• Coach and mentor junior team members to support their technical and professional development

About You

• You’ll have:
• Strong coordination and organizational skills
• Meticulous attention to detail
• A proactive, self-motivated approach
• The ability to multi-task and problem-solve in a fast-paced environment
• Excellent communication skills (written, spoken, and listening)
• Experience managing stakeholder relationships across multiple levels
• Experience in a client-facing role within International Social Security, National Insurance Contributions (NIC), Assignment Management, or Expatriate Tax is highly beneficial.

What we Offer

• Global Exposure: Work with international clients and teams across EY’s global network.

• Career Progression: Develop new skills, take on leadership roles, and grow your career.
• Support & Coaching: Learn from industry experts and be mentored by senior leaders.
• Flexible Working: We support hybrid working and work-life balance. Two days in the office.
• Total Rewards Package: Competitive salary, benefits, and exclusive EY perks.
• Inclusive Culture: Work in an environment that celebrates diversity and authenticity.

At EY, belonging means more than just fitting in—it means thriving. Whoever you are, whatever your background, you are valued, supported, and empowered to be your best.

Ready to lead, inspire, and make an impact? Apply now!