PhD position in decoding the microbial nitrogen cycle for climate resilience

Job Description

Nitrogen-cycling microorganisms play pivotal ecological roles across ecosystems and scales, yet anthropogenic activities are perturbing global nitrogen fluxes beyond sustainable limits. Excess nitrogen accumulates in the environment, triggering a microbially mediated cascade of impacts ranging from eutrophication to emissions of the potent greenhouse gas N2O. This PhD project aims to advance our mechanistic understanding of how nitrogen-cycling microbial communities assemble and function, laying the foundation for effective strategies to mitigate anthropogenic impacts and reduce greenhouse gas emissions. Specifically, you will systematically study how the co-occurrence of nitrogenous substrates shapes the genomic and functional signatures of nitrogen-cycling microbial communities and their emergent phenotypes, including the ecophysiological roles of overlooked intermediates. You will combine experimental and theoretical systems microbiology approaches, including high-throughput bioreactor cultivations, multi-meta-omics (metagenomics and metaproteomics), and mathematical modelling. You will work in a highly interdisciplinary environment at the interface of environmental biotechnology and engineering, systems microbiology, and computational biology, with ample opportunities to develop your own scientific ideas.

Job Requirements

The ideal candidate will have the following 'Need-to-haves':

• MSc in Chemical or Environmental Engineering, Systems Microbiology, Computational Biology or Bioinformatics, or a closely related field.
• Demonstrable laboratory experience and a strong interest in the design and operation of laboratory-scale bioreactors.
• An independent, self-motivated, and curiosity-driven mindset.
• Strong analytical skills combined with a scientific mindset and a hands-on mentality.
• Excellent spoken and written English.

Nice-to-haves:

• Experience with metagenomics and/or metaproteomics, including wet-lab procedures and bioinformatic analyses.
• Experience with Linux and scientific programming in R and/or Python.

If your native language is not English and you do not hold a degree from an institution in which English is the language of instruction, you must submit proof of English proficiency from either TOEFL (minimum total score of 100) or IELTS (minimum total score of 7.0). Proof of English language proficiency certificates older than two years are not accepted.

Conditions of Employment

Doctoral candidates will be offered a 4-year period of employment in principle, but in the form of 2 employment contracts. An initial 1.5 year contract with an official go/no go progress assessment within 15 months. Followed by an additional contract for the remaining 2.5 years assuming everything goes well and performance requirements are met.

Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities, increasing from €3059 - €3881 gross per month, from the first year to the fourth year based on a fulltime contract (38 hours), plus 8% holiday allowance and an end-of-year bonus of 8.3%.

As a PhD candidate you will be enrolled in the TU Delft Graduate School. The TU Delft Graduate School provides an inspiring research environment with an excellent team of supervisors, academic staff and a mentor. The Doctoral Education Programme is aimed at developing your transferable, discipline-related and research skills.

The TU Delft offers a customisable compensation package, discounts on health insurance, and a monthly work costs contribution. Flexible work schedules can be arranged.

Will you need to relocate to the Netherlands for this job? TU Delft is committed to make your move as smooth as possible! The HR unit, Coming to Delft Service, offers information on their website to help you prepare your relocation. In addition, Coming to Delft Service organises events to help you settle in the Netherlands, and expand your (social) network in Delft. A Dual Career Programme is available, to support your accompanying partner with their job search in the Netherlands.

Additional Information

For more information about this vacancy, please contact Michele Laureni ([email protected]).

Application Procedure

Are you interested in this vacancy? Please apply no later than 7 September 2026 via the application button and upload the following documents:

• CV.
• Motivation letter (max. 2 pages).
• Research statement related to the vacancy topic (max. 1 page).
• Applicants selected for an interview will be asked to provide contact information of at least 3 references.

Doing a PhD at TU Delft requires English proficiency at a certain level to ensure that the candidate is able to communicate and interact well, participate in English-taught Doctoral Education courses, and write scientific articles and a final thesis. For more details please check the Graduate Schools Admission Requirements.

Please note:

• You can apply online. We will not process applications sent by email and/or post.
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