Fullstack Software Engineer (Email Security & Anti-Abuse) — Proton
- Location
- Genève
- Contract
- full-time
- Posted
- 46 days ago
Role overview
About Proton
Join Proton and build a better internet where privacy is the default
Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right .
- About Proton
- Join Proton and build a better internet where privacy is the default
Application process
- 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.
- 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.
Contacts
- Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe.
- 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 [email protected].
- 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 . LI-ONSITE
Company and context
- Our 500+ team members across 50+ countries come from leading organizations and elite academic backgrounds.
- We move fast, keep hierarchy light, and prioritize impact over optics.
- If you want to do meaningful work with exceptionally high-caliber people, this is it.
- Join us and do work you can truly be proud of.
- Check our open-source projects here ! Purpose of the role
- MSA is a highly multi-disciplinary group started in 2019 to tackle difficult mail delivery, spam, abuse, and account security problems that impact the Proton ecosystem.
- We built sophisticated systems from scratch that combine human intelligence and machine learning to make tens of millions of realtime or asynchronous decisions each day.
- Our custom systems have reduced spam filter misclassifications by over 60%, blocked millions of abusive bulk signups, protected hundreds of thousands of users from account compromise by attackers, and mitigated hundreds of DDoS attacks.
- In the last few years, we have also been building complicated new products, including launching Wallet, Lumo AI, and Meet.
- We are the main group at Proton working on AI.
Additional details
- Check our open-source projects here ! Purpose of the role
- We are looking for humble, mission-driven, systems-thinking people who want to make a big impact in a startup environment.
- MSA builds and operates many services responsible for different domains.
- You may work on MSA's custom systems written in Python or on the main Proton API written in PHP or on Proton Web apps written in React or even on native iOS and Android mobile apps
- Able to work autonomously and lead the whole development process, from design to QA Experience with AI tools and AI agents
- Excellent English communications, both written and spoken
- experience with managing Linux servers, including infrastructure as code (Puppet, Ansible) and containerization
- Read more about our impact here . Our Commitment to Diversity and Inclusion
- If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. Candidate Privacy Notice
- To learn more about our privacy policy, please visit our privacy policy page .
Notes and original content
- Check our open-source projects here !
- Purpose of the role
- What you will do
- Job requirements
- Able to work autonomously and lead the whole development process, from design to QA
- Experience with AI tools and AI agents
- Bonus points for:
- What We Offer
- Read more about our impact here .
- Our Commitment to Diversity and Inclusion
Questions about this listing
What salary does Proton offer for this role?
Proton lists CHF 60'500 - 91'500 gross per year for this position in Genève. This is the salary published in the original listing (or, when the employer omits a figure, a realistic estimate for the role and sector) — the calculator on this site converts it to your actual net take-home once cross-border tax and social contributions are applied.
Is this a full-time role, and what type of contract does Proton offer?
This listing is a full-time position. The contract type shown here comes directly from the employer's original posting; always confirm exact hours, notice period and probation length with Proton during the application process, since these details can vary by role even within the same contract category.
Do I need a cross-border work permit for a role in Geneva?
EU/EFTA residents living in the border zone of the country adjoining Canton Geneva can apply for a G permit; the Swiss employer files it with that canton's migration office after the contract is signed. Border-zone rules and processing times vary by neighbouring country and canton, so confirm the specifics with Geneva's cantonal migration office or with HR during the application.
How do I apply for this position at Proton?
Use the "Apply now" button on this page — it links directly to Proton's original listing at job-boards.eu.greenhouse.io, so your application goes straight to the employer's own applicant-tracking system. Frontaliere Ticino does not collect or forward applications itself.
