Product Security Lead

Overview

Join to apply for the Product Security Lead role at Proton .

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Proton started with Proton Mail and has expanded to Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. Our tools empower individuals and organizations to take control of their personal data and defend against invasive practices.

Proton is a profitable company that does not rely on VC funding, serving over 100 million user accounts with a team of 500+ from 50+ countries. Hiring is selective; we aim to work with exceptional talent who are eager to push boundaries and ship high-impact work.

We are a global-minded, start-up at heart with a flat structure that emphasizes empowerment and flexibility. Check our open-source projects here and join us to build a privacy-first internet.

The Team: We’re looking for a visionary security professional who combines deep expertise with genuine passion to drive meaningful change across Proton. You will be encouraged to challenge the status quo, innovate efficiently, and collaborate daily with the brightest minds who care about protecting privacy and building secure products.

Tech Stack and Tools: Proton’s products include Mail, Calendar, VPN, Pass, Drive, available on Windows, macOS, iOS, and Linux. Our infrastructure is Linux-based, and we leverage open-source technologies where possible.

About the role

You will be leading our efforts to ensure that Proton\’s applications are secure.

What you will be doing

• Set the north star – Define a compelling vision and roadmap for product security that inspires the organization.
• Build the function – Hire and grow a product security team.
• Be the go-to hero – Serve as the security lead across the company, influencing strategy, design, and delivery.
• Architect secure products – Partner with product managers, designers, and developers to embed security from day one.
• Create playbooks & policies – Design clear, developer-friendly security guidelines and automated workflows.
• Empower engineers – Build tools, processes, and culture for fast and safe shipping.
• Lead the bug bounty program – Engage the global security community as an extension of the team.
• Influence roadmaps – Ensure security is baked into every release.

What we are looking for

• 10+ years in application security (SaaS or privacy-focused)
• Proven record leading security projects from concept to production
• Leadership style that blends constructive challenge with collaboration
• Hands-on experience with code reviews, penetration testing, or security tooling
• Track record defining and executing remediation plans
• Ability to translate technical detail into clear, actionable guidance
• Quick grasp of large, complex systems

Nice to have

• Experience with B2B product security features
• Knowledge of infrastructure security (hardware, networking, OS, file systems)
• Experience with cryptographic protocols, or privacy-centric organizations
• Experience with utilizing open-source code at scale

Even if you don’t meet all the requirements, please apply if you’d be a great fit.

What We Offer

• Office First: Offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei; optional remote work up to 30% depending on role.
• Technology: Devices and software provided to excel.
• Food: Lunch and snacks at offices.
• Transport: Subsidized transport costs based on location.
• Stock Options: Ownership through stock options on joining.
• Flexible Working: Define your own hours around team meetings.
• Learning & Development: Training programs, conferences, and continual learning.
• Employee Benefits: Health insurance, retirement savings, vacation and wellness programs.
• Work that Matters: Proton is community-first with user subscriptions as the revenue source.

Our Commitment to Diversity and Inclusion
We believe diversity drives innovation and are committed to an inclusive environment where all individuals feel valued and empowered. We strive for equal opportunities, open dialogue, and continuous learning.

If you need extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice
When you apply for a position or are considered for a role at Proton Technologies AG, your information is stored in Greenhouse and used to evaluate your suitability. We retain information for future roles, and you may contact our privacy team at for access, correction, or deletion of data. Proton does not accept unsolicited resumes from any source other than direct candidates.

To learn more about our privacy policy, please visit our privacy policy page.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Product Management and Marketing

Industries

• Software Development

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