Experienced Scientist Air Quality and Deposition Modelling | Utrecht

Within the Energy and Material Transition (EMT) Unit, the research-group AER (Air quality and Emissions Research) analyses the impact of human activity on air quality and atmospheric deposition to ecosystems. The Research Group develops state of the art emission and chemistry transport models (LOTOS-EUROS and DALES) and validates these against ground-based observations and novel satellite products, which make it possible to predict and trace the composition, origin and expected distribution of a wide range of substances in the air – such as particulate matter, ammonia, nitrogen-dioxide, ozone, etc. – and to reach verdicts on air quality (anywhere in the world). AER also has the expertise to assist government policymakers and decision-makers in the private sector when it comes to transitioning to a more sustainable, cleaner and socioeconomically more desirable economy. Our areas of focus and hence our staff are at the heart of debate in society.

We are looking for a (post-doctoral) researcher with expertise in air pollution or deposition modelling with experience in developing chemistry transport models, and using in-situ (flux) measurements, to join our team at TNO. We currently foresee an increase in our research portfolio on nitrogen (deposition) modelling using our model portfolio. The successful candidate will work on the development, application, validation and interpretation of our modelling chain, which may include 1D deposition modelling in comparison to flux measurements, emission modelling and the more complex atmospheric chemistry transport model LOTOS-EUROS (www.lotos-euros.nl).

Read more about Climate and Air Quality at TNO.

You are passionate about working with atmospheric chemistry transport models and large datasets. Moreover, you are eager to contribute to solving societally relevant environmental problems, just like the rest of the team. You are not afraid to ask critical questions, take initiative, and act as a scientific sparring partner for colleagues and stakeholders. You bring your own network and are able to expand it by representing TNO as an expert in air quality, source attribution and nitrogen deposition in several national and international networks.

You also have the following to offer:

• A PhD or Master in Meteorology, Earth sciences, Mathematics, Physics or a similar field;.
• At least 7 years of working experience (including PhD years) with chemistry transport modelling (LOTOS-EUROS or a similar eulerian model).
• Demonstrated experience with inverse modelling and/or deposition modelling, preferably related to nitrogen compounds.
• Experience in scientifically leading projects, for example in the role of lead scientist or work package leader, including guiding junior scientists and safeguarding scientific quality.
• Expertise in model evaluation and atmospheric chemistry.
• Strong programming skills (Python and Fortran).
• Proven capacity to acquire projects, including contributing to proposals, interacting with clients, and translating scientific questions into funded research.
• An outgoing and communicative personality, comfortable representing TNO in meetings, workshops and international collaborations.
• Excellent level of written and spoken English; Dutch would be an advantage.

Challenging and varied work with a real impact. And plenty of opportunities as, at TNO, you are in charge of shaping your career. We offer a gross monthly salary between € 4,500 and € 7,500 (based on your knowledge and experience), 8% holiday pay, a 13th month bonus of 8.33% and a flex budget (5.58% + € 180). In addition, you will be given every opportunity to develop yourself.

TNO offers optional employee benefits, enabling you to tailor your benefits package to match your personal situation. You may also expect:

• An extremely professional, innovative working environment where colleagues are leading experts in their field.
• The opportunity to attend courses, workshops and conferences, and to receive training and coaching based on your needs.
• 33 days annual leave on a full-time basis plus a flexible holiday (prorated) that can be used on a cultural, religious, or otherwise important day of your choosing.
• An employer working towards a respectful, inclusive, and equitable work environment where every employee can flourish, with various employee networks that foster connection and give advice.
• We offer a comprehensive and flexible mobility plan that also includes full compensation for public transportation for commuting and business travel[OPTIONAL] or a leased car.
• Great social events with your team and other TNO colleagues. That’s how you will get to know a lot of people really quickly.
• Flexible working hours, the possibility to work parttime (32 or 36 hours) and the possibility of working from home.
• A good pension scheme.

Read more about tailoring your benefits package.

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow’s world. Read more about TNO as an employer.

At TNO we encourage an inclusive work environment, where you can be yourself. Whatever your story and whatever unique qualities you bring to the table. It is by combining our unique strengths and perspectives that we are able to develop innovations that make a real difference in society. Want to know more? Read what steps we are taking in the area of diversity, equity and inclusion.

Please, apply before the 12th of May, 2026. The selection process comprises two interview rounds. The preliminary (online) interview takes place on the 4th of June, 2026. The second interview round has been scheduled at the Utrecht location for the 18th of June, 2026. We aim to finalize the entire process within four weeks.

The selection process may include an online assessment and a reference check.

A certificate of Conduct (VOG) is required before starting a new job at TNO.