Site Reliability Engineer

Proton seeks a Mid-level Site Reliability Engineer in Geneva to support its global infrastructure, ensuring high availability and performance across thousands of servers. The role involves automation, monitoring, and on-call support for critical systems including Kubernetes and network services.

You will join the Infrastructure Systems team, responsible for delivering foundational platforms such as Kubernetes, VM orchestration, and bare metal provisioning, along with essential services like DNS, DHCP, and monitoring. Your work will ensure the stability and scalability of Proton’s global infrastructure.

Responsibilities

• Manage and improve the performance of Proton’s global network of thousands of servers.
• Create and maintain automation systems to maintain 99.95%+ uptime for infrastructure services.
• Participate in on-call rotations to resolve complex technical issues across diverse network environments, including censorship-affected regions.
• Build and refine monitoring and alerting tools to provide real-time insights into infrastructure health.
• Design solutions to enhance connectivity, stability, performance, security, and resilience, especially in challenging network conditions.

Requirements

• Understanding of Linux internals, networking stack, and kernel tuning.
• Proven experience with Kubernetes and infrastructure automation using Terraform, Ansible, Puppet, or similar tools.
• Proficiency in Python for writing automation scripts and operational tools.
• Ability to design highly available, scalable, and distributed system architectures.
• Hands-on experience with monitoring tools such as Prometheus and Grafana dashboards.
• Familiarity with security best practices for infrastructure systems.

Nice to have

• Experience with bare metal provisioning.
• Background in on-premise cloud solutions.
• Contributions to open-source software projects.

What the company offers

• Work that Matters: Your contributions directly support Proton’s mission of protecting user privacy—millions rely on Proton, and your work has measurable impact.
• Stock Options: From day one, you become a shareholder in Proton, aligning your success with the company’s growth.
• Technology: You’ll be equipped with the tools and hardware needed to excel in your role.
• Learning & Development: Proton supports your career growth through real ownership and challenging projects from the start.
• Employee Benefits: Comprehensive health coverage, retirement plans, generous leave, and wellness support are provided to help you thrive.
• In-Person Collaboration: You’ll work alongside passionate, skilled colleagues in offices in Geneva, Zürich, Barcelona, London, and more, fostering face-to-face teamwork.
• Food: Daily lunch and snacks are provided in the office to keep you focused on your work.
• Transport: Proton covers public transport, bike allowances, or parking costs to make commuting easy.
• Flexible Working: You can set your own schedule, prioritizing outcomes over rigid hours.

About the company

Proton was founded in 2014 by CERN scientists with the belief that privacy is a fundamental human right. The company is profitable, independent, and hires from the top tier of applicants. With over 500 team members across more than 50 countries, Proton emphasizes fast execution, low hierarchy, and a commitment to diversity and innovation.

• Privacy is a core mission, and the company operates independently without venture capital control.
• The team is composed of top talent from leading organizations and elite academic institutions.
• The company moves quickly, maintains a flat structure, and values real impact over appearances.
• Diversity is seen as essential to innovation and advancing the mission of making privacy the default for everyone.