System Administrator

Job description

Our company

At Proton, we envision an internet where privacy is the default, and we’re building ways to help all people secure their digital lives and take control of their data.ProtonMail was founded in 2014 by a group of scientists who met at the European Organization for Nuclear Research (CERN). And since its inception, the company has grown at a fast pace and today has over 40 million users. 

Our principal product, ProtonMail, is the world’s largest secure email service. Our second product, ProtonVPN, is one of the world’s most popular VPN services. Our vision is to build an internet platform for the protection of digital rights, and we are also developing additional products, including ProtonCalendar, ProtonDrive, and more to come.Proton users include leaders of the Hong Kong protest movement, New York Times journalists, some of the world’s largest corporations, and millions of ordinary citizens from over 180 countries. Our team is diverse and dynamic, representing over 30 different nationalities, with offices in Geneva, Zurich, Prague, Vilnius, Skopje, and Taipei.


About the position

We operate our own storage infrastructure distributed across datacenters throughout Switzerland and Germany. This infrastructure, built primarily on open source technology, is doubling every year and requires 24/7 operation.

As a member of Proton's Core Infrastructure team, you will operate our infrastructure and contribute to its improvement. You should have demonstrable knowledge of Linux and experience handling administrative tasks on core infrastructure services (these tasks include monitoring, logging, configuration management, DevOps solutions, and cloud architecture). You should also enjoy building scalable and highly available systems, taking ownership and responsibility for services and projects, and working in close collaboration with multiple teams.


What you will do:

  • Contribute to the configuration and update management of Linux systems
  • Maintain, scale, and optimize core services
  • Perform analysis for troubleshooting and incident response
  • Give support to our users (infrastructure teams and, at a higher level, to all Proton employees)
  • Keep our infrastructure aligned with security best practices

Job requirements

  • 5+ years of administering Linux systems in a medium/large scale and highly-available infrastructure
  • Deep understanding of virtualization concepts
  • Experience with logging and monitoring systems
  • Demonstrated knowledge of Linux
  • Proven experience with configuration management and automation (Puppet)
  • Scripting experience in Python and/or Bash
  • Experience using Web protocols and service daemons such as Apache, HAProxy, or Nginx
  • Clear understanding of common TCP/IP protocols and services (DNS, TLS, SMTP, HTTP, etc.)
  • Ability to keep up in an extremely fast-paced environment
  • Good communication skills in a multicultural environment

     Knowledge in the following areas is considered a plus:

    • Other programming languages (PHP, go, C/C++)
    • Computer hardware architecture
    • Network switching and routing
    • On-premise cloud solutions across datacenters throughout Switzerland and Germany


    Why you should join Proton:

    • We work on interesting, challenging problems every day. There is never a dull moment.
    • Our startup culture means everyone’s opinion matters. You can have a significant impact.
    • Our rapid growth means there are many opportunities for advancement.
    • The chance to do something meaningful. Proton products protect dissidents, journalists, and activists. Our work saves lives.
    • Be part of something bigger. Millions of people and businesses around the world have embraced our idea of an Internet where privacy and security are the default. Join the privacy revolution that is changing the world.


    ProtonMail is using Recruitee recruitment platform for more effective hiring and better candidate experience. Your data will be kept confidential and not shared with any third parties.

    Keep in mind that you will receive emails from careers@protonmail.recruitee.com email or other addresses on the protonmail.recruitee.com domain.