Systems Administrator

Job description

Our mission is to defend human rights and democracy through building software that is essential for digital freedom and privacy protection for all Internet users.

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 26 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 such as ProtonCalendar, ProtonDrive, and much more.

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, San Francisco, and Taipei. 


We are growing the Data Science team to better identify the needs of our existing and potential users and to help increase the number of people who will turn to our services to protect their privacy. Thus, we are looking for experienced Systems Engineers to help us build systems so that we can quantify metrics and optimize our service.


As a member of Proton's Data Science team, you will support our developers with systems engineering and integrating data science tools into our services and applications. You will work on both our user-facing apps and our open source network and server infrastructure. Additionally, you will take a lead role in optimizing and designing our Apache Spark cluster, as well as all the other elements of our data platform.

You should have demonstrable knowledge of Linux and network services. 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:

  • Install and configure systems and services using automation tools such as Puppet and Ansible.
  • Maintain, tune, and optimize our data processing infrastructure, including
  • Apache Spark cluster, Clickhouse cluster, Redis, Kafka, MySQL, and Tableau.
  • Collaborate with the data engineering team to design architecture needed to integrate new technologies into the data platform and to redesign existing ones.
  • Build and improve monitoring for services and applications.
  • Occasionally cover shifts to ensure our 24/7 operations.

Job requirements

  • Bachelor's degree or higher in a quantitative discipline: statistics, mathematics, physics, engineering, computer science, etc.
  • Two or more years of experience in IT with automation/DevOps background.
  • Solid knowledge of Linux, networking, and security.
  • Proven experience with configuration management and automation (Puppet or Ansible).
  • Extensive experience with code development in Python and with version control tools.
  • Hands-on experience with at least three of the following technologies: Apache Spark, distributed database clusters, Redis, Kafka, Tableau

     Knowledge in the following areas is considered a plus:

    • Monitoring systems (Icinga2, Prometheus, Grafana)
    • Virtualization and container technologies (KVM, Vagrant, Docker, Docker compose, Kubernetes)


    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.