Systems Administrator

Job description

ProtonMail was born at the European Organization for Nuclear Research (CERN) in 2013 when a group of scientists and engineers envisioned an email service that empowers people to own their private data and keeps them safe from mass surveillance. Since then, ProtonMail has become the world’s largest secure email provider, with over 20 million users and a profitable business model. Our mission extends beyond email: we’re building a better Internet through other privacy-focused services, including ProtonVPN, ProtonCalendar, and ProtonDrive. We are looking for passionate people to join our growing team and help us build a suite of security tools that safeguard privacy online build a better Internet.


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 work at ProtonMail?

    • Our startup culture means everyone’s opinion matters. You can have a significant impact.
    • We work on interesting, challenging problems every day. There is never a dull moment.
    • Our rapid growth means there are many opportunities for advancement
    • The chance to do something meaningful. ProtonMail protects 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.