Product Security Engineer

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 whole organisation.

Build the function – Find the best people to work with you and build your dream product security team

Be the go-to hero-in – Serve as go-to person for product security across the entire company, influencing strategy, design, and delivery.

Architect secure products – Partner with product managers, designers, and developers to embed security from day one, turning risk-aware thinking into a habit.

Create playbooks & policies – Design clear, developer-friendly security guidelines and automated workflows that keep code secure without killing velocity.

Empower engineers – Build the tools, processes, and culture that let developers ship fast and safe.

Lead the bug bounty program – Turn the global security community into an extension of our own team.

Influence roadmaps – Sit at the table with product leads, shaping priorities and ensuring security considerations are baked into every release.

What we are looking for:

3+ years in application security (SaaS or privacy-focused)

Experience reviewing code for security issues

Experience working on remediation of app security findings with affected teams

Experience with penetration testing

Experience with SAST tooling

Experience driving process definition and implementation across the full SDLC

Nice to have:

Experience with AI-based security reviews

Experience managing a bug bounty programme

Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply.

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. Depending on the role, fully remote positions may also be available.

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.

Flexible Working: You can define your own working hours as long as it works with team meetings.

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. Read more about our impact here.

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

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

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch.

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

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

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