We are looking for a technically strong and solution‑oriented Senior Tax Manager to join the growing SSC organization in Warsaw. The role covers direct tax compliance, tax accounting, and cross‑border coordination across multiple jurisdictions. This position reports directly to the Global Tax Director based in the EU and works closely with global tax, finance, and IT teams.

Client Details: Our client is a rapidly expanding international life sciences organization. With a strong, growing global footprint, the company continues to build its European operations, including its newly established business services and finance functions in Poland. Warsaw city center, with a hybrid working model three times per week from the office.

Responsibilities

• Coordinate direct tax compliance across assigned countries, managing internal data readiness and oversight of external advisors.
• Collect, validate, and reconcile tax data for income tax returns prepared externally.
• Review and approve filings, coordinate payments, and ensure proper documentation.
• Provide advisory input on local and cross‑border tax matters, including OECD Pillar 2 readiness.
• Prepare and review US GAAP tax provisions, including current and deferred tax calculations and reconciliations.
• Contribute to tax disclosures for statutory financial statements under local GAAP.
• Ensure alignment with consolidated group reporting requirements through coordination with global tax teams.
• Oversee withholding tax compliance and treaty applications.
• Collaborate with indirect tax specialists and other business functions to ensure complete visibility of tax data.
• Represent the tax function in finance system initiatives, including SAP S/4HANA and other automation tools.
• Identify opportunities for process improvements and support implementation of new tax technologies.
• Mentor junior staff and support shared service colleagues in tax‑related processes.
• Partner cross‑functionally with Legal, Treasury, FP&A, HR, and IT on transactions and new market activities.

Qualifications

• Minimum 7 years of direct tax compliance and advisory experience (in‑house, SSC or Big 4).
• Degree in Accounting, Law, Finance, or Tax; advanced tax qualification (e.g. CPA, CTA, Polish Tax Advisor) is an advantage.
• Strong knowledge of SAP systems and tax reporting under US GAAP.
• Proven experience managing cross‑border tax processes in complex international structures.
• Familiarity with tax automation tools (e.g. Power BI, Alteryx, or other tax tech solutions) is a plus.
• Strong communication, analytical, and stakeholder management skills.
• Fluent English is essential; other European languages are an asset.
• Self‑driven, detail‑oriented, and comfortable working in a matrix, multicultural environment.

Job Offer

• Independent senior‑level role with global exposure.
• Opportunity to shape tax operations and reporting processes across multiple jurisdictions.
• Private medical care at LuxMed (including dental care).
• Life insurance coverage.
• Annual bonus.
• Benefits platform with family and wellness programs.
• Tuition assistance and learning support.
• Hybrid work model with flexibility (3 times per week in the Warsaw office).
• Modern, collaborative, and people‑focused company culture.

Find out more about this opportunity in Warsaw, Mazowieckie, Poland.