Software Developer - Beam Optics

About the role

Software Developer

Beam Optics (OMC Team)

Position Overview

The Linear and Non-Linear Optics (LNO) Section within CERN's Accelerator and Beam Physics (ABP) Group seeks a Software Developer to join the Optics Measurement and Correction (OMC) team. This role is central to the preparation and operation of the High-Luminosity Large Hadron Collider (HL-LHC). The appointed professional will be responsible for creating and maintaining the software infrastructure that enables precise beam-optics measurements and corrections. This work directly supports the commissioning procedures and the overall high-performance objectives of the HL-LHC, thereby contributing to its groundbreaking physics programme.

The successful candidate will become part of a specialized team focused on the robustness and advancement of the OMC framework. The role involves close collaboration with accelerator physicists and operators, translating complex measurement requirements into reliable software solutions. The position operates within a dynamic, international environment that values innovation, precision, and collaborative problem-solving.

Key Responsibilities

• Maintain and evolve the core OMC framework and its associated toolset, ensuring its stability and performance throughout LHC commissioning and operational phases.
• Investigate and implement software solutions that enhance the efficiency and capability of optics measurement and correction processes for the LHC.
• Modernize accelerator model creation and correction algorithms to use new simulation tools and methodologies.
• Research and implement automation for critical measurement and analysis workflows, deploying solutions where feasible to increase throughput and reduce manual effort.
• Design and develop new Graphical User Interfaces (GUIs) and analysis tools specifically for deployment in the CERN Control Centre during optics commissioning campaigns.
• Actively participate in the execution and analysis of optics measurements within CERN accelerators, providing software support and contributing to physics-driven improvements.

Professional Profile and Skills

Candidates must possess a solid educational and professional background in a relevant scientific or engineering discipline. A strong command of software development principles is essential, with proven expertise in Python being a mandatory requirement.

• Demonstrated software development experience, with a strong focus on Python.
• Practical experience in GUI development for complex systems.
• The ability to test, diagnose, and optimize existing software applications to improve performance and reliability.
• A structured and organized approach to work, with strong prioritization skills necessary to meet strict project timelines.
• Excellent teamwork and communication abilities, facilitating effective collaboration with physicists and engineers.
• A genuine interest in developing and maintaining software solutions for applied physics, particularly within the specialized field of accelerator physics.
• Professional proficiency in either English or French, with a demonstrated commitment to learning the other language.

Eligibility Criteria

To be considered for this position, applicants must meet the following requirements:

• Be a national of a CERN Member or Associate Member State.
• Hold a professional background in Physics, Software Engineering, or a related field. Candidates must satisfy one of the following conditions:
• Hold a Master's degree and possess 2 to 6 years of professional experience post-graduation.
• Hold a PhD with no more than 3 years of professional experience post-graduation.
• Never have held a CERN fellow or graduate contract in the past.

Position Details

• Job Reference: BE-ABP-LNO-2026-132-GRAP
• Field of Work: Applied Physics
• Benchmark Job: 200140
• Applied Physicist
• Contract Duration: 24 months, with a potential extension to a maximum of 36 months.
• Working Hours: Full-time (40 hours per week).

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Location: Geneva

• Target Start Date: 01 January 2027.
• Overtime Requirement: This role may require work during nights, Sundays, and official CERN holidays to align with the needs of the Organization.

Compensation and Benefits

• A monthly gross salary ranging from 6372 to 7004 Swiss Francs, tax-free, determined by academic qualifications and experience.
• 30 days of paid annual leave, in addition to a 2-week closure period for the Organization.
• Comprehensive health insurance coverage for the employee, spouse, and children, along with membership in the CERN Pension Fund.
• Monthly family, child, and infant allowances, subject to individual circumstances.
• A relocation package, including an installation grant and travel expense reimbursement, tailored to individual needs.
• Possibility to extend the contract up to 36 months upon successful performance review.
• Access to on-the-job and formal training opportunities, including language classes.

About CERN

CERN, the European Organization for Nuclear Research, is at the forefront of scientific discovery. Our mission is to push the boundaries of science and technology by building and operating complex infrastructure. We bring together a diverse community of physicists, engineers, and technical experts who collaborate to address fundamental questions about the universe.

Diversity is a core value that drives our innovation and success. We are committed to creating an inclusive environment where every contribution is valued and where professionals can thrive. If you are ready to be part of a dynamic community dedicated to uncovering the fundamental laws of the universe, CERN is the place for you.