At Sisk, we’re more than a construction company, we’re a family-owned business with a global reach, committed to building excellence in every project. We deliver trust, certainty and value to our clients while embracing innovation and shaping the future of construction.

This is a maternity cover contract Global Mobility Tax Manager role where you will support the Global Mobility Tax Lead who is the focal point of contact for the business on all aspects of international mobility and employment taxes, an area that has evolved significantly due to the continued expansion by the business internationally. 

Location: Citywest Head Office, flexible hybrid option is 3 days in office min.
Contract: 18 month maternity contract role

• Support the Global Mobility and Employment Tax Lead in the oversight of international employment tax compliance for assignees across Ireland, the UK, and wider Europe.
• Monitor tax residency positions, shadow payroll requirements, Social Security (A1/PD) alignment, and multi‑jurisdiction reporting (including PAYE, UK PAYE, Posted Workers notifications, EU local filings, etc.).
• Review complex assignment‑related tax matters and collaborate with external advisors on technical positions, ensuring appropriate application of double tax agreements and foreign tax credit mechanisms.
• Oversee end‑to‑end assignment lifecycle from a tax compliance and documentation perspective, including pre‑assignment planning, on‑assignment support, and repatriation processes.
• Review draft tax returns prepared by external providers and collaborate with advisors to resolve queries relating to foreign tax credits, payroll withholding, shadow payroll entries, and residency positions.
  
• Support payroll teams in reconciling cross‑border tax liabilities, monthly BIK and subsistence payment instructions and ensuring accurate payroll reporting across jurisdictions.
• Conducting onboarding reviews for contractors and confirming the accuracy of their status determinations in Ireland & UK.

• Proven track record managing international assignments across multiple jurisdictions (EU, UK, Middle East, U.S. etc.).
• Experience delivering employee tax briefings and supporting assignees through lifecycle events.
• Hands on experience of working within a busy team. Experience in a fast paced, multi‐site environment.
• Proven track record of driving continuous improvement of mobility processes, technology use (e.g. Power BI dashboards), and compliance trackers.

• CTA or AITI qualified with 5+ years' experience in global mobility tax, employment tax, expatriate tax, or a related international tax field.
• Strong understanding of international mobility frameworks, including tax residency, double tax treaties, Social Security regulations, and foreign tax credit mechanics.
• Customer focused with the ability to manage conflicting priorities and to meet the needs of different business units.

• Competitive salary
• 26 days annual leave plus additional company days
• Pension and benefits
• Unlimited learning and development opportunities
• Much more

Our People and Recruitment Commitment

At Sisk Group our people are at the heart of our success. We offer the chance to work with purpose, build a career with no limits and be part of a great team.

All vacancies are managed directly by our Internal Recruitment Team. Unsolicited contact or speculative CVs from unapproved agencies will not be accepted and no introductory fees will apply.

We are an equal opportunities employer. We welcome applications from all qualified candidates regardless of gender, race, ethnicity, disability, age, sexual orientation, religion or any other protected characteristic. Reasonable adjustments are available during the recruitment process.

We know the confidence gap and imposter phenomenon can stop talented candidates applying. You do not need to meet every criterion – your skills and potential matter. Don’t hold back we want to hear from you.

All recruitment materials comply with legal and regulatory requirements including the EU Pay Transparency Directive and the Equality Acts UK and Ireland.

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