100% advisory International Tax Senior

Assistant Manager - International Tax (100% advisory)

Location: London

Service Line: International Tax Advisory

Type: Permanent | Full Advisory

About the Role

We are seeking an ambitious and analytically strong Assistant Manager to join an International Tax Advisory practice within a Big 4 firm. This is a 100% advisory-focused role working on high‑profile, complex cross-border tax issues, Pillar Two advisory, international restructuring, and transaction-related tax projects for multinational clients.

If you are currently in a compliance-heavy role and ready to take the next step into a pure advisory environment, this is a rare opportunity to accelerate your career in a team known for technical excellence, collaboration, and rapid progression.

What You Will Do

In this role, you will work closely with senior leadership to deliver strategic, commercially focused advice to multinational organisations, including:

* Advising clients on cross-border tax matters, inbound/outbound structures, and international tax planning.
* Supporting the design and implementation of Pillar Two strategies, modelling and impact assessments.
* Working on group restructuring projects, including holding company optimisation, supply chain realignment, and IP migrations.
* Advising on tax implications of mergers, acquisitions, and disposals.
* Producing high-quality technical analysis and reports for senior stakeholders.
* Managing elements of client relationships and helping drive new business opportunities.
* Coaching junior team members and contributing to the team's knowledge base.

What We're Looking For

You'll be a great fit if you have:

* Experience in corporate tax (compliance or mixed), ideally within a professional services environment.
* A strong desire to transition fully into advisory-focused work.
* Solid understanding of international tax principles.
* Strong analytical and communication skills, with the confidence to engage senior stakeholders.
* Professional qualifications (ACA/CTA or equivalent) or working toward them.
* A proactive mindset, commercial awareness, and a passion for complex international tax challenges.

What's On Offer

* Clear and structured progression into Manager and beyond.
* Exposure to high-profile global clients and landmark projects.
* Opportunity to build niche expertise in Pillar Two, cross-border advisory, and international restructuring.
* A collaborative, supportive culture within one of the world's leading advisory firms.
* Hybrid working and excellent benefits.

Who This Role Is Perfect For

This role is ideal for candidates currently in:

* A compliance-focused corporate tax role wanting full exposure to advisory
* A mixed tax role seeking greater technical depth in international tax
* A mid-tier firm wanting to transition into Big 4 advisory

If you're ready to move away from compliance and accelerate your career in international tax advisory, we'd love to hear from you.

Please note our advertisements use PQE/salary levels purely as a guide. However, we are happy to consider applications from all candidates who are able to demonstrate the skills necessary to fulfil the role.

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