Barcelona; Geneva; London; Paris; Hybrid

Proton is hiring a Product Security Lead

About the Role

This role is responsible for leading security initiatives across product engineering, embedding security into the development lifecycle, and guiding teams to build secure, privacy-first solutions.

Responsibilities

  • Lead the integration of security principles into product design and architecture
  • Collaborate with engineering teams to identify and resolve security risks
  • Define and enforce secure development standards and practices
  • Conduct threat modeling for new and existing product features
  • Oversee security assessments, penetration testing, and vulnerability management
  • Ensure compliance with privacy regulations and industry security standards
  • Develop and deliver security training for development and product teams
  • Respond to security incidents with a focus on product-related systems
  • Guide cryptographic implementations to meet security and usability goals
  • Work closely with QA to incorporate security testing into CI/CD pipelines
  • Maintain up-to-date knowledge of emerging threats and attack vectors
  • Support audit processes and third-party security evaluations
  • Drive secure configuration management across environments
  • Promote a culture of security awareness within product teams
  • Evaluate third-party components for security risks before integration
  • Assist in defining incident response protocols for product systems
  • Ensure secure handling of authentication and access control mechanisms
  • Monitor security posture through metrics and reporting
  • Collaborate with legal and compliance on data protection requirements
  • Advocate for privacy-preserving features in product roadmaps
  • Mentor engineers on secure coding practices
  • Contribute to security documentation and architectural reviews
  • Ensure secure deployment and update mechanisms for client applications
  • Evaluate security implications of new technologies and frameworks
  • Support product certifications and security attestations

Nice to Have

  • Master's degree in cybersecurity or related discipline
  • Certifications such as CISSP, OSCP, or CISM
  • Direct experience in end-to-end encrypted systems
  • Contributions to open-source security projects
  • Experience with zero-knowledge architecture
  • Knowledge of mobile application security (iOS and Android)
  • Background in security automation and tooling development
  • Prior work in privacy-focused technology companies
  • Experience with secure hardware integration
  • Public speaking or conference presentation experience

Compensation

Competitive salary with performance-based incentives

Work Arrangement

Hybrid remote with optional office presence

Team

Security-focused product development team

Our Mission

We are committed to building a safer internet by prioritizing user privacy and data protection in every product we create.

Why Join Us

You will work on globally impactful products used by millions, shaping the future of digital privacy and security.

Growth Opportunities

Opportunities for professional development, conference attendance, and leadership growth are supported and encouraged.

Diversity and Inclusion

We value diverse perspectives and foster an inclusive environment where all team members can thrive.

Work Environment

Collaborative, technically driven culture with an emphasis on autonomy, responsibility, and continuous learning.

Available for qualified candidates

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About company
Proton

Proton is a privacy-focused technology company that provides end-to-end encrypted services to protect users' digital lives. Founded to empower individuals with privacy and freedom online, Proton offers a suite of secure products including email, calendar, VPN, cloud storage, password management, and video conferencing.

Used by over 100 million people and organizations, Proton’s services are built on a foundation of zero-access encryption, open-source code, and independent security audits. The company is committed to transparency, community-driven development, and defending digital rights globally.

Headquartered in Switzerland, Proton operates under one of the world’s strongest privacy laws and is structured as a non-profit foundation to ensure its mission remains user-first.

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Job Details
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Posted 2 hours ago