International Tax, Manager

International Tax, Manager - London

About Nscale

Nscale is the GPU cloud engineered for AI. We provide cost-effective, high-performance infrastructure for AI start-ups and large enterprise customers.  Nscale enables AI-focused companies to achieve superior results by reducing the complexity of AI development. Our GPU cloud bolsters technical capabilities and directly supports strategic business outcomes, including cost management, rapid innovation, and environmental responsibility.

We thrive on a culture of relentless innovation, ownership, and accountability, where every team member takes pride in their work and drives it with excellence and urgency. As an Nscaler, you’ll build trust through openness and transparency, where everyone is inspired to do their best work. If you join our team, you’ll be contributing to building the technology that powers the future.

Role Overview

We’re looking for a Manager to join our expanding international tax team to support on broader international tax matters.

This role is ideal for a tax generalist with a strong command of UK and international tax, who is excited to work in a fast-moving, tech-driven global business. You’ll be instrumental in developing scalable tax processes, advising on complex cross-border operations, and ensuring the business remains compliant as it grows internationally.

This is a high-impact, hands-on role in a lean but growing team, offering exposure to all areas of global tax.

Key Responsibilities

• Assist in international corporate tax planning and strategy, for the group’s business-led structuring and optimisation transactions.


• Help evaluate the tax implications of digital services, AI infrastructure and cross-border transactions, including IP and financing considerations. 


• Undertake withholding tax analyses and filings globally, tax treaty analyses and permanent establishment risk assessments.


• Support other team specialists (VAT, Global Employment Taxes, Transfer pricing) where necessary to ensure indirect tax treatment is aligned with corporate tax strategy and the business needs.


• Coordinate with external advisors for tax filings, documentation and on complex group projects.


• Work closely with Finance and Legal teams on intercompany transactions, tax governance, new market entry and contract review


• Monitor and assess developments in tax regulations and global tax frameworks (e.g. OECD Pillar Two).


• Contribute to tax policy, process development, and risk management in a scaling international group. 

What We're Looking For

• ACA, CTA, ATID, CPA, or equivalent professional qualification.


• 5+ years of experience in tax, with specific expertise in UK corporation tax for multi-jurisdictional groups.


• Good working knowledge of international tax principles and a broad understanding of indirect tax in cross-border contexts.


• Ability to manage cross-border workstreams with multiple internal and external stakeholders.


• Practical mindset with strong attention to detail and ability to adapt to change.


• Proactive, collaborative, and excited to work in a fast-paced, agile environment.

What we can offer you

At Nscale, you'll find a collaborative, supportive, and innovative environment where your contributions spark real impact. We're building something extraordinary, and we want you at the core.

• Highly competitive package (base + equity) with reviews every 12 months. 🚀


• Join the fastest-growing tech startup, your chance to push boundaries, collaborate with brilliant minds, and make your mark on cutting-edge AI. ✨


• Expect a dynamic progression plan tailored to your ambitions. Grow by trying new things, leading, challenging the status quo, and owning your impact, always with our full support. 


• Human-First Flexibility: We treat you as humans first. 🫶🏽 Our flexible workplace trusts Nscalers to deliver, giving you the autonomy to shape your day around life's moments.

Equal Opportunities 

We strongly encourage applications from people of colour, the LGBTQ+ community, people with disabilities, neurodivergent people, parents, carers, and people from lower socio-economic backgrounds.

If there’s anything we can do to accommodate your specific situation, please let us know.

The responsibilities outlined in this job description are not exhaustive and are intended to provide a general overview of the position. The employee may be required to perform additional duties, tasks, and responsibilities as assigned by management, consistent with the skills and qualifications required for the role.