Senior Corporate Tax Consultant – Freelance (Spain & Switzerland)

About the role

We are seeking a Senior Corporate Tax Consultant on a freelance basis to support an international project focused on corporate income tax processes in Spain and Switzerland. The consultant will work closely with finance, tax, internal audit and external advisors to ensure robust tax controls and compliance.

Key responsibilities

• Participate in walkthroughs of corporate income tax processes for Spain and Switzerland.
• Review and explain end‑to‑end tax processes, including data collection, calculation, review, approval and filing.
• Identify, document and assess key tax controls, risks and process dependencies.
• Support internal stakeholders during tax process reviews, audit discussions and control assessments.
• Liaise with Finance, Tax, Internal Audit and external advisors as required.
• Provide subject‑matter expertise on local corporate tax requirements.
• Ensure clear documentation of findings, process flows, controls and supporting evidence.

Required profile

• Strong experience in corporate income tax compliance.
• In‑depth knowledge of tax regulations in Spain and Switzerland.
• Background in Big 4, tax advisory, in‑house tax, internal audit or multinational corporate environments.
• Ability to explain tax processes from both technical and controls perspectives.
• Excellent stakeholder management and communication skills.
• Fluent English; Spanish and/or German are a plus.

Required skills

• SOX compliance knowledge.
• ERP systems exposure (e.g., SAP, Oracle).
• Tax accounting and tax reporting expertise.
• Understanding of deferred tax concepts.
• Experience with internal controls and risk‑management frameworks.