Site Reliability Engineer Observability

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. Since then weve built the worlds 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 some situations Proton has literally helped save lives.

We are profitable independent (no VC control) and selectively hire from the top 1% of applicants. Our 700 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. Check our open-source projects here.

Purpose of the role:

Were a small tool-agnostic team that owns the observability infrastructure behind Protons services the logs metrics traces and alerts that keep systems running smoothly for the millions of users who trust us with their privacy. We run on open-source stacks across Protons on-premise data centers and we dogfood heavily: were our own first customers. We favor simple solid solutions over large engineering efforts and we believe good systems emerge iteratively. Youll join a group that values frank open communication and a problem-solving mentality if you want narrow scope and a fixed backlog this isnt the right fit.

Tech Stack and Tools

• Languages: Python Go
• Observability: open-source stacks for logs metrics traces alerting; OpenTelemetry
• Orchestration: Kubernetes
• GitOps: ArgoCD
• Infrastructure-as-code: Terraform Ansible Puppet
• Storage at scale: ClickHouse
• Platform: Linux on-premise data centers

What Youll Do

• Design deploy and operate observability pipelines for logs metrics traces and alerts across Protons services using open-source technologies.
• Partner with development and platform teams to ship practical alerting dashboarding and integration solutions that engineers actually rely on.
• Build reusable templates and tooling that streamline onboarding incident response and analysis.
• Champion observability best practices across teams and raise the bar for how Proton instruments its systems.
• Build AI-powered tooling that sharpens detection analysis and response capabilities.
• Evolve the observability platform iteratively to meet the real needs of internal stakeholders.

Who You Are

• Extensive experience in an SRE DevOps or Platform Engineering role.
• Comfortable writing Python and/or Go for tooling and automation.
• Hands-on experience operating open-source observability stacks (logs metrics traces alerting).
• Working knowledge of Kubernetes and GitOps workflows.
• Practical experience with infrastructure-as-code (Terraform Ansible Puppet or similar) and solid Linux system administration skills.

Nice to Have

• Familiarity with OpenTelemetry.
• Experience running ClickHouse for log and metric storage at scale.
• Interest in or experience with AI/ML tooling.

What We Offer

• Work that Matters: millions of people trust Proton with their privacy. We answer only to our users not advertisers not investors with conflicting agendas not governments. The work you do here is real and the impact is measurable. (read more about our impact here)

• Stock Options: at Proton we all have the opportunity to be owners of the company. From day one you have a real stake in what were building. When Proton wins you win.

• Technology: youll get the right hardware and the right software you need to do your best work.

• Learning & Development: we invest in your growth because sharp people make us better. Proton is one of the fastest ways to accelerate your career because youll be thrown into real challenges with real ownership from day one.

• Employee Benefits: your wellbeing isnt an afterthought. We offer strong health coverage solid retirement options generous leave and wellness support so you can bring your best self to work every day

• In-Person Collaboration: Amazing things happen when passionate smart and purposeful people get together in the same room. With offices across Geneva Zürich Barcelona London and more youll spend most of your time collaborating face-to-face with people who genuinely care about what theyre building

• Food: Lunch and snacks are on us every day in our offices so you can focus on the work and not on whats for lunch.

• Transport: getting to the office shouldnt cost you. We cover public transport bike allowances or parking whichever works for you.

• Flexible Working: you own your schedule. Set hours that work for you and your team because outcomes matter more than when the clock says you started.

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 theirService Privacy 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 .

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 visitour privacy policy page.

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