Group Tax Manager

Location: London

Office requirement: Hybrid, 2 days per week

Employment type: Permanent

Be responsible for leading the group’s global tax function, developing strategies to optimise tax efficiency, and ensuring compliance across multiple regions, with legal entities in UK, US, Greece, Singapore and Czechia. You’ll act as the primary contact for all tax matters, advising senior stakeholders and collaborating with teams across Finance, Legal, and People to support GWI’s continued international expansion..

You’ll need to be able to demonstrate the core skills this role requires. Here’s what the team will be looking for in you:

Tax Strategy & Governance

• Own and develop the group’s tax policy, strategy, and governance framework
• Lead tax planning and structuring projects aligned with GWI’s commercial goals
• Map and monitor global tax risks and opportunities

Compliance & Reporting

• Oversee global corporate tax compliance and reporting, including UK, US and international jurisdictions
• Ensure adherence to OECD Transfer Pricing requirements, managing documentation and audits
• Manage indirect tax compliance, including UK VAT, US Sales tax and other international equivalents
• Lead the preparation and submission of annual corporate tax returns in collaboration with local advisors

Advisory & Collaboration

• Advise on tax implications of business expansion, M&A activity and group restructuring
• Partner with Legal on employee share schemes and with People on payroll tax matters
• Support R&D tax credit claims and oversee tax due diligence processes
• Maintain constructive relationships with tax authorities globally

Process Improvement

• Drive continuous improvement through new systems, tools, and process automation in tax and finance operations

• Qualified tax professional (CTA or equivalent) with at least 3 years’ post-qualification experience in industry
• Strong technical expertise across UK, US and international tax, including transfer pricing and global reporting standards
• Working knowledge of US tax principles is desirable
• Commercially astute, with the ability to translate technical tax concepts into business-focused advice
• Excellent stakeholder management and communication skills
• Self-directed and able to work independently, taking ownership of projects and decisions with minimal supervision

• Clear Communication & Influence: Convey complex tax concepts in a clear and engaging way, ensuring understanding among non-finance stakeholders
• Organisation & Time Management: Demonstrate strong organisational skills with the ability to manage multiple priorities and deliver high-quality work to tight deadlines
• Proactive Problem-Solving: Identify opportunities for process and efficiency improvements through analytical thinking and a solutions-oriented approach
• Collaboration & Curiosity: Foster strong working relationships across teams and functions, thriving in a fast-paced, international environment
• Initiative & Self-Motivation: Take ownership of priorities and deliverables, working independently to see tasks through to completion

At GWI, you’ll find meaningful work, visible impact, and a culture that empowers you to do your best. Our package includes:

• Time to recharge – 25 days’ annual leave, plus office closures over the holidays.
• Health & wellbeing – Health cash plan, enhanced family benefits, carer days, and mental health support.
• Financial benefits – Competitive salary, 4% pension matching, and recognition programs that celebrate success.
• Flexibility & balance – Flexitime, early Friday finishes, hybrid and remote options, plus a “work from home” budget.
• Career growth – Accredited learning, leadership development, and global career mobility.
• Community & impact – DE&I initiatives, volunteering opportunities, donation matching, and payroll giving.

Diversity is fundamental to who we are—both as a data company and as a workplace. Our data reflects global realities, and so must our teams. We strive to ensure our workforce is as diverse and inclusive as the insights we provide to our clients.

As a Disability Confident employer, we welcome applications from disabled candidates and are committed to providing all necessary adjustments during the hiring process. We also actively encourage applications from underrepresented and marginalized communities.

At GWI, you will find a place where you can contribute meaningfully, grow professionally, and belong fully.

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