Senior Tax Specialist (Direct & Indirect Taxes, Multi Jurisdiction)

What you will do

Indirect‑Tax Excellence

• 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.

Direct‑Tax Leadership

• 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

Compliance, Reporting & Audit

• 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.

Job requirements

• 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.

Bonus points for:

Knowledge of German or French is an advantage.

What we offer

• 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 based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do.