Job Description

Your responsibilities

We are looking for a Scientist or Software Engineer to join CERN. The CMS Core Software group is in charge of supporting the software development community of the CMS experiment. This mandate implies the development and monitoring of the CMS Offline Software (CMSSW) release integration and QA system. This activity consists in overseeing multiple, parallel development efforts by a rather large community making sure they converge into a deployable software product, CMSSW, which is used by the collaboration for Monte Carlo simulation, reconstruction, and analysis of the detector data. You will be part of a stimulating environment with world class software experts.

You will take part in all aspects of the devops process, specifically:

• Maintenance of the external software stack for CMSSW, keeping track of updates and porting to new operating systems, toolchains (GCC/binutils/LLVM) and architectures (x86_64/ppc/arm).
• Continually improve CI/CD tools, processes and procedures
• Work closely with CMSSW development teams to help ensure end-to-end quality
• Build, maintain and scale infrastructure for Production and Dev environments
• Develop and maintain Build, Deployment, and Continuous Integration systems
• Write and maintain infrastructure documentation
• Work with third-party vendors to resolve infrastructure issues

Your profile

Skills

Essential skills and experience:

• Excellent knowledge of Linux based environments
• Proficiency in shell/python scripts programming
• Good knowledge of build tools like cmake, make and auto tools.
• Solid understanding of continuous integration, deployment and operations concepts
• Experience with configuration management, cloud stack and Linux containers
• Achieving results
• Solving problems
• Managing self

Other desired skills:

• Familiarity with git, GitHub/Lab and building/porting open source software
• Knowledge of the C++ programming language
• Knowledge of software debugging, profiling, and validation tools such as gdb, valgrind, Address Sanitizer, Undefined Sanitizer, perf

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• By the application deadline, you have a maximum of two years of professional experience since graduation in Computer Science, Physics (or a related field) and your highest educational qualification is either a Bachelor’s or Master’s degree.
• You have never had a CERN fellow or graduate contract before.
• Applicants without University degree are not eligible.
• Applicants with a PhD are not eligible.

Additional Information

Job closing date: 14.01.2025 at 23:59 hrs CET.

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Target start date: 01-February-2025

Job reference: EP-CMG-CO-2024-198-GRAE

Field of work: Software Engineering and IT

What we offer

• A monthly stipend ranging between 5134 and 5647 Swiss Francs (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: installation grant; family, child and infant allowances; payment of travel expenses at the beginning and end of contract.
• 30 days of paid leave per year.
• On-the-job and formal training at CERN as well as in-house language courses for English and/or French.

About us

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 http://home.cern.

Diversity has been an integral part of CERN’s mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success.