Computing Fellowship: Ceph Storage Engineer
European Council for Nuclear Research (CERN)
Location: Geneva (Switzerland)
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Job Description

Company Description

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization.

Job Description

CERN is the birthplace of the World Wide Web and the world’s leading laboratory for particle physics. You will join the Storage Group in CERN’s IT Department for a unique challenge as the next step in your career. Our group is responsible for the overall data storage needs of the Organization, handling in total more than 300 petabytes of data across 2000 servers, 60000 disks, and 35000 high-capacity tapes. CERN’s storage systems are continuously improved to provide the highest-performing and most flexible storage solutions available to our scientific computing communities.​

We are working with Ceph, an open-source storage system designed to address the object, block, and file storage needs of our Cloud Computing platform and end-user community. Ceph provides highly scalable and reliable storage while building upon low-cost commodity hardware. Ceph has a vibrant open-source community, in which we participate actively. Our Ceph storage clusters are among the largest in the world, with a combined capacity exceeding 30 petabytes, and they continously offer highly available storage to our mission-critical applications.

You are all full-stack engineer who will contribute to the development and operations for our Ceph facilities across multiple regions and data centres. You will work on improved disaster recovery features for Ceph, driven by the needs of our cloud applications and users, while liaising with the upstream community of developers to ensure their integration with the Ceph codebase and their long term maintainability.


The selected candidate will join the activities of the General Storage Services (GSS) section of the Storage (ST) group. As a Ceph Engineer, you will:

  • Evaluate, improve, and deploy the latest Ceph features for disaster recovery across our multiple cloud and storage regions.
  • Help operate our Ceph facilities using the best known devops practices.
  • Maintain service and user documentation together with other members of the GSS section.
  • Contribute actively to the evolution of the CERN storage services.


Eligibility criteria:

  • You are a national of a CERN Member or Associate Member State;
  • You have graduated, or are about to graduate, with a university degree (BSc or MSc level in computer science,engineering or another relevant course) and have no more than 4 years’ relevant experience after obtaining your degree;
  • Kindly note that experience prior to the latest obtained degree will not be taken into account for the calculation of your overall years of experience.

Essential skills and experience:

  • In-depth experience using and administering Linux systems;
  • Practical experience with development or operations of distributed systems;
  • Demonstrated curiosity in computing and a willingness to dive deep to understand and solve complex problems.

Desired technical skills:

  • Practical experience developing in C++ and/or Python on Linux;
  • Experience using git to contribute fixes or features to upstream software projects;
  • Experience with cloud computing environments and technologies.

Please note that CERN Staff members are not eligible to apply for a Fellowship.

Additional Information

CERN would very much like to benefit from your expertise, commitment and passion.

In return, CERN will provide you with:

  • An employment contract for between six months (minimum) up to a maximum of 36 months.
  • A stipend ranging from 5,281 to 6,558 Swiss Francs per month (net of tax).
  • Coverage by CERN’s comprehensive health scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
  • Depending on your individual circumstances: an installation grant, family, child and infant allowances as well as travel expenses to and from Geneva.
  • 2.5 days of paid leave per month.

Your Life @CERN

Find out more here:

This is how you can apply:

You will need the following documents to complete your application:

  • A CV.
  • A scanned PDF of your most recent relevant qualification.

We recommend to add two recent letters of recommendation, giving an overview of your academic and/or professional achievements. You can upload these letters at the time of application if you have them to hand. You will also be provided with a link as soon as you have submitted your application to forward to your referees to upload their letters confidentially. Please note this must be done before the closing date.

All applications should reach us no later than 29 September 2020.

About CERN

At an intergovernmental meeting of UNESCO in Paris in December 1951, the first resolution concerning the establishment of a European Council for Nuclear Research (in French Conseil Européen pour la Recherche Nucléaire) was adopted.Two months later, an agreement was signed establishing the provisional Council – the acronym CERN was born.Today, our understanding of matter goes much deeper than the nucleus, and CERN's main area of research is particle physics. Because of this, the laboratory operated by CERN is often referred to as the European Laboratory for Particle Physics.

Physicists and engineers at CERN use the world's largest and most complex scientific instruments to study the basic constituents of matter – fundamental particles. Subatomic particles are made to collide together at close to the speed of light. The process gives us clues about how the particles interact, and provides insights into the fundamental laws of nature. We want to advance the boundaries of human knowledge by delving into the smallest building blocks of our universe.

The instruments used at CERN are purpose-built particle accelerators and detectors. Accelerators boost beams of particles to high energies before the beams are made to collide with each other or with stationary targets. Detectors observe and record the results of these collisions.Founded in 1954, the CERN laboratory sits astride the Franco-Swiss border near Geneva. It was one of Europe's first joint ventures and now has 23 member states.