Radiation Safety Expert

**Company Description**
**Job Description** Introduction**

Are you an engineer or physicist with a background in radiation safety and a passion for challenging projects in the field of particle physics experiments? Then seize this opportunity and join the CERN Experimental Physics (EP) Department where you will take a leading role, with specific responsibility for radiation safety, in the operation of the LHCb experiment and the preparation of future enhancements and upgrades.

**Functions**

LHCb is one of the four large experiments at CERN’s Large Hadron Collider (LHC). As a key member of the LHCb Technical Coordination team with specific responsibility for radiation protection (RP) and radiation effects studies, you will:

- provide advice and guidelines on radiological matters to LHCb collaborators, both for detector maintenance activities and for the design of future upgrades of the experiment,
- ensure that simulation studies to characterise the radiation environment in the existing LHCb detector and in different upgrade scenarios are carried out and made available,
- take responsibility for the design, optimisation and implementation of radiation shieldings,
- take responsibility for RP measurements and risk assessments and for the definition of protective measures,
- ensure that activities in the LHCb experimental area are carried out following best practices in matters of radiation safety and in compliance with the applicable CERN rules,
- establish estimates of radioactive waste production and define waste management procedures in compliance with CERN rules and procedures,
- contribute to the day-to-day operation of the experiment and participate in the LHCb infrastructure and safety stand-by duty service,
- participate in the planning and scheduling of activities in the LHCb experimental area and contribute to other activities of the LHCb Technical Coordination team where needed.

**Qualifications**
Master's degree or PhD or equivalent relevant experience in the field of physics or engineering or a related field. Professional certification in the area of radiation protection would be an advantage.

**Experience**:
You have experience in:

- radiation protection;
- the evaluation and risk assessment of radiological environments and materials;
- the use of radiation characterization software tools (_e. g._ Actiwiz, Nucleonica) and/or Monte Carlo radiation transport codes (_e. g._ FLUKA);
- writing technical and scientific documentation.

**Technical competencies**:

- Knowledge of Radiation Safety;
- Knowledge of regulatory framework and best practice in radiation protection;
- Simulation of radiation environments;
- Study of radiation protection design.

**Behavioural competencies**:

- Achieving results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
- Communicating effectively: ensuring that information, procedures and decisions are appropriately documented. Providing others with timely information. Selecting the appropriate medium and forum to communicate.
- Working in teams: building and maintaining constructive and effective work relationships.
- Demonstrating flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
- Learning and sharing knowledge: taking steps to expand knowledge in other areas of expertise beyond own field.

**Language skills**:
Spoken and written English: ability to draw-up technical specifications and/or scientific reports and to make oral presentations in English. The willingness to learn French would be an advantage.
**Additional Information** Eligibility and closing date**:
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.

**Employment Conditions**

Working Hours: 40 hours per week

This position involves:

- Participation in a regular stand-by duty, including nights, Sundays and official holidays.
- Work in Radiation Areas.
- Interventions in underground installations.
- A valid driving licence.
- Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Job grade: 6-7

Job reference: EP-LBO-DO-2025-11-LD

Benchmark Job Title: Applied Physicist