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International Tax Manager

SeniorPlc1

Rickmansworth, England, United Kingdom Hybrid permanent

Posted: January 28, 2026

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Quick Summary

We are seeking an International Tax Manager to join our team in Rickmansworth, England, UK. The ideal candidate will have expertise in tax law and regulations, with a strong understanding of international tax planning and compliance. The successful candidate will be responsible for designing and implementing tax strategies to support our clients in the aerospace, defense, land vehicle, and power & energy markets.

Job Description

Who is Senior plc?

Senior plc is an international, market-leading, engineering solutions provider with 21 operational business in 10 countries.  Senior designs, manufactures and markets high-technology components and systems for the principal original equipment producers in the worldwide aerospace, defense, land vehicle and power & energy markets. The Group is split into two divisions, Aerospace and Flexonics, servicing five key sectors.

Senior's Purpose is to ‘help engineer the transition to a sustainable world for the benefit of all our stakeholders.’

We have a long history of well-respected brands and an excellent reputation in our key market sectors. Senior delivers value to its customers and shareholders via operational excellence that is underpinned by its people and processes.

Safety - Integrity - Customer Focus  - Respect & Trust - Accountability - Excellence

Visit us at www.seniorplc.com

Purpose of the Job:

Reporting to the Director of Tax and Strategic Finance, the International Tax Manager is responsible for ensuring high quality tax forecasting / reporting for strategic decision making and external IFRS reporting; managing the adoption of and compliance with evolving international tax reporting requirements; and being a key player in the design and implementation of group tax projects. The role will work closely with Head Office finance, treasury and subsidiary finance teams.

This is a hands-on role offering opportunities to take ownership, show initiative and be a key part of the Head Office team. There will be a significant focus on US tax matters which are managed day to day by the satellite US finance team. The role includes a good mix of international tax project work providing the opportunity to work with key stakeholders and influence the business.  Some UK and international travel will be required.

Key responsibilities:

Group reporting and compliance

• Managing the group’s internal tax forecasting cycle, overseeing the year end / interim tax consolidation and reporting processes including liaising with external auditors.
• Managing central tax filings including BEPs Pillar 2 and Country by Country Reporting (CbCR).
• Maintaining the tax risks register and UTP provisioning.
• Ensuring compliance across the group with governance and internal controls.
• Supporting the Head Office finance team on IFRS tax reporting matters.
• Pro-actively keeping up to date with legislative developments and assessing the impact on the group.

Internal advisory and tax projects

• Providing support on international tax matters across the group, including operational cross-border transactions and structuring.
• Overseeing transfer pricing policy development, implementation and documentation compliance (in conjunction with external advisors).
• Involvement with tax aspects of M&A activity.
• Designing and managing the implementation of tax efficiency planning, group and treasury tax initiatives.
• Assisting with tax authority enquiries.
• Contributing to tax technology initiatives and automation.

Key Skills and Experience:

Skills and Behaviours

• Strong attention to detail, organisation, and able to manage multiple priorities is essential
• Track record of working independently and in conjunction with external advisors.
• Proven ability to partner with non-tax stakeholders across the business.
• Commercial and pragmatic approach to problem solving.
• Flexible to work within different time zones.
• Flexible to travel if required.

Experience and Education

• CTA or ACA / ACCA qualified with good IFRS (tax) accounting knowledge.
• UK Corporate tax and international tax specialisation with relevant and proven experience gained in a multinational environment or top / mid-tier accountancy firm. 
• Experience of tax consolidation processes and the reporting requirements of a plc.
• Good working understanding and experience of the US tax system.
• Experience of managing other foreign taxes, UK VAT or Customs duties would be helpful.
• Strong IT skills.

Location:

The role will be based at the Group head-office in Rickmansworth, Hertfordshire, on the outskirts of London.  However, due to the international spread of the Group’s operations the role may require some travel.

We offer:

• Generous (non-contractual) bonus scheme.
• Excellent Pension scheme.
• Private Healthcare.
• Life assurance.
• Income Protection cover.
• Employee Assistance Programme (EAP).
• Onsite parking.
• Daily lunch.
• Informal (non-contractual) flexible/hybrid working giving opportunity to flex working hours and to work from home ‘up to’ 2 days a week, in agreement with your manager.

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