Senior Tax Specialist; Direct & Indirect Taxes, Multi Jurisdiction

The team:

Within our Finance function, we are seeking a Senior Tax Specialist to architect and execute a best-in‑class global tax framework that keeps pace with our SaaS scale‑up’s rapid international expansion. Reporting to the Head of Finance, you will be a strategic linchpin in building a tax function that simultaneously safeguards compliance and fuels growth. Your mission spans the full tax spectrum (direct, indirect, payroll, and equity compensation) across multiple jurisdictions.

You will steer tax critical initiatives such as transfer pricing design, VAT/sales tax automation, payroll tax control, and stock option reporting, while embedding robust risk management processes and tax tech solutions. Acting as a trusted advisor to leadership and cross‑functional teams, you will anticipate regulatory change, lead tax audits, and translate complex rules into pragmatic guidance that accelerates market entry and product launches.

Ultimately, this role is pivotal in ensuring that our global tax posture not only meets ever‑evolving legal requirements but also optimises cash tax outcomes and supports sustainable, hyper‑growth scale operations.

• Own end‑to‑end VAT/GST/sales‑tax registrations, return prep and reconciliations across worldwide locations.
• Monitor nexus thresholds, advising the business on exposure.
• Maintain and validate multi‑jurisdiction VAT/GST/sales‑tax engine settings for B2C and B2B transactions in our subscription management and tax information tools.

• Manage global corporate‑income‑tax compliance, provisioning and filings for HQ and subsidiaries.
• Lead transfer‑pricing documentation, inter‑company charge‑outs and permanent‑establishment risk reviews.
• Oversee withholding‑tax and treaty‑relief processes on cross‑border SaaS revenue streams.

• Standardise processes and controls across jurisdictions, document standard Operating Procedures for scalability.
• Coordinate global tax calendars, ensure on‑time filings, payments and statutory disclosures.
• Prepare quarterly and annual tax provisions (IFRS & Swiss CO), liaising with finance and external auditors.
• Lead or support tax‑authority audits, crafting technical memoranda and data packs.
• Serve as the tax owner for employee incentive and equity programs (Stock purchase, stock options, phantom shares), advising on plan design, vesting triggers, and employee tax communication.
• Coordinate with Treasury to develop cash tax forecasting, effective tax rate management, and repatriation strategies.
• Champion tax‑tech tools, data automation and AI‑assisted analytics to streamline filings and insights.
• Track legislative changes, issue impact briefs and update internal policies accordingly.
• Educate finance, sales and legal colleagues through targeted training sessions.

• University degree in Law or Economics.
• Five to ten years’ experience in taxation.
• Experience gained in a law firm or one of the Big Four advisory firms is an asset.
• SaaS or digital services industry exposure and understanding of revenue recognition nuances.
• Experience managing ESOP plans.
• Experience deploying or enhancing tax technology roadmaps.
• Ability to work independently and show initiative.
• Strong analytical skills, problem‑solving mindset, and readiness to challenge the status quo.
• Proficiency in standard MS Office applications.
• Fluency in English required.

• Knowledge of German or French is an advantage.

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces…