Indoor Air Quality Engineer

What you'll do

You will provide support to the Organisation in matters of Indoor Air Quality (IAQ) for occupational Health & Safety. This includes requirements for the design of air management systems, performing on-site workplace assessments and leading air quality studies for specific projects.

Your responsibilities

Provide technical and safety requirements for the design and retrofit of ventilation and filtration systems.
Conduct on-site workplace air quality assessments, measuring different indoor pollutants, analysing the results and proposing solutions.
Investigate incidents related to air quality, perform root cause analysis, and recommend corrective actions.
Lead complex Indoor Air Quality (IAQ) studies for high-risk and/or high-complexity projects. Perform ventilation / filtration rate calculations and airflow modelling
Perform ventilation / filtration rate calculations and airflow modelling.
Develop IAQ guidelines, procedures, best practices and other engineering solutions for the Organisation.
Act as Safety correspondent and become the single point of contact in matters of safety, for some CERN-specific projects.

Still here? Let's make a quick check about

Your profile

Strong background in nuclear ventilation and ISO 17873 standard.
Strong background on modelling the spread of pollutants in indoor environments.
Experience with IAQ sensors and performing on-site measurements is desirable.
Profound knowledge in Indoor Air Quality (IAQ) and Ventilation Standards.
Knowledge in designing HVAC or air management systems for tertiary and industrial facilities.
Familiarity with Python programming language and CFD tools is desirable.
Master's degree or PhD or equivalent relevant experience in the field of Mechanical Engineering or Environment and Building Engineering or a related field.

Your skills

HVAC process design and analysis.
Occupational safety and risk management.
Knowledge and application of numerical modelling in fluid mechanics and/or heat transfer.
Builds and maintains constructive and effective work relationships.
Demonstrates a pro-active approach to resolving differences; addresses issues of conflict constructively.
Demonstrates a receptive approach to feedback; is open to criticism and reconsiders position accordingly.
Seeks and integrates other points of view when tackling an issue; consults experts in the field and undertakes benchmarking.
Spoken and written English, with a commitment to learn French.

Ideal start date: 06/01/2026

Contract duration (in months): 60

Grade range: 6

Benchmark job: 200070 - Health, Safety and Environment Engineer

Job flexibility: Fully Onsite

Employment conditions

A valid driving licence.
Stand-by duty, when required by the needs of the Organisation.
Work in Radiation Areas.
Interventions in underground installations.

Global Benefits at CERN

A minimum entry-salary of 9236 Swiss Francs per month (tax free), increasing in line with your years of relevant experience.
30 days of paid leave per year plus 2 weeks annual closure.
Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
Family, child and infant monthly allowances depending on your individual circumstances.
A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State.
You have relevant qualifications and professional experience.
If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

Your CV (English or French)
Any document you consider relevant to your application

Your CERNDepartment

The HSE Department drives CERN’s Safety Policy, promoting a corporate and preventive Safety culture across the Organization.

It provides expertise and support in radiological and conventional safety as well as environmental protection. The Department also manages emergency services, including the CERN Fire and Rescue Service and Medical Service.

Overview of CERN

Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

Ready To apply?

Be prepared with our resources and tips

All good?

Apply now Allow 15 minutes to complete your online application

Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.