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Computing Fellowship: Full-Stack Software Engineer

Geneva (Switzerland)

  • Organization: CERN - European Organization for Nuclear Research
  • Location: Geneva (Switzerland)
  • Grade: Grade 5 - Technical or Administrative roles - Only open to Nationals of all CERN Member States and Associate Member States - Mid level
  • Occupational Groups:
    • Engineering
    • Information Technology and Computer Science
  • Closing Date:

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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

At the Compact Muon Solenoid (CMS) experiment, we continuously build, test, deploy and improve the software we use to process the data deriving from the protons and ions collisions generated by the Large Hadron Collider.

You will be part of a small and dynamic devops team of engineers and physicists at CERN, in the CMS experiment. We use mainly the Python programming language as well as Bash, Jenkins, git, computer architectures such as x86, ARM and POWER and work with C++/CUDA code and compilers such as GCC, NVCC and LLVM.

You will:

  • Be responsible for the integration, testing and building of the data processing code provided by CMS physicists;
  • Maintain the CMS software stack, including the third-party packages it relies on, continually improve CI/CD tools, processes, and procedures;
  • Write and maintain infrastructure documentation.


Eligibility criteria

  • You are a national of a CERN Member or Associate Member State;
  • You have a Bachelor or Master’s degree in Computer Science, Engineering or other related field;
  • You have no more than 4 years’ experience after completing your highest diploma.

Essential skills and experience

  • Excellent knowledge of Linux, shell and based environments.
  • Proficiency in shell/Python scripts programming; 
  • Solid understanding of continuous integration, deployment, and operations concepts;
  • You enjoy solving  problems, you work in an organised and efficient fashion and deliver high quality results.

Desired skills and experience

  • Experience with configuration management, cloud stack and Linux containers;
  • Familiarity with git and building tools, e.g. CMake, make and autotools;
  • Knowledge of software debugging and profiling tools.

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 5,305 to 6,586 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

Get a glimpse of what it’s like to work at CERN: and

How to Apply:

You will need the following documents to complete your application:

  • A CV (Resume) 
  • Your most recent relevant qualification. (Degree)

We recommend you 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 27 January 2022.

We do our best to provide you the most accurate info, but closing dates may be wrong on our site. Please check on the recruiting organization's page for the exact info. Candidates are responsible for complying with deadlines and are encouraged to submit applications well ahead.
Before applying, please make sure that you have read the requirements for the position and that you qualify.
Applications from non-qualifying applicants will most likely be discarded by the recruiting manager.

What does it mean?

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