Postdoctoral Fellowship (12) at University of Hamburg, Germany

Duties include teaching and research in the respective department or institute. Research associates may also pursue independent research and further academic qualifications as well as acquire teaching experience. These duties are intended to promote academic achievement. Therefore, at least one-third of set working hours will be made available for the associate’s own academic work.

The Postdoc should complement research activities of the Experimental Marine Zooplankton Ecology group at IMF and is expected to develop a research concept tailored for activities with a short-term (up to three years) and a long-term (up to six years) perspective. The concept should address current and future impacts of global change on marine zooplankton communities (i.e. zooplankton responses to multiple-stressors using experimental approaches, ranging from small-scale laboratory to larger-scale mesocosm approaches). Grant applications for third-party funding from national and / or international funding agencies are a necessity. The Postdoctoral Fellow should be active, open-minded and contribute to the groups’ activities.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The Cluster of Excellence “Quantum Universe” performs research to understand mass and gravity at the interface between quantum physics and cosmology. The research team includes leading scientists from mathematics, particle physics, astrophysics, and cosmology at the University of Hamburg and DESY.

The successful candidate is expected to conduct excellent research on current mathematical problems of gravitational physics based on methods from Riemannian geometry, geometric analysis and generalised geometry à la Hitchin (including generalised Ricci flow).

Postdoctoral research associates will become members of the Quantum Universe Research School (QURS), which provides academic and key skills training, as well as career planning support. In addition, they will receive individual budgets to facilitate the attendance of summer schools and conferences, and to support other educational measures. Additional travel money for project-specific duties will be provided by the hosting research groups. Postdoctoral research associates may participate in the supervision of doctoral researchers, teaching at the University, and in the organization of the Cluster via an early career council.

This project introduces a fundamentally new way of studying the public sphere by designing and testing models of algorithmic news supply that translate normative democratic ideals into experimentally observable news environments. More information on the project is available at:

Public Spheres for Democracy : Journalism and Communication Studies, esp. Digital Journalism

As Postdoctoral Researcher, you are responsible for the computational core of the project: translating public sphere theory into operational algorithmic news recommender systems as follows:

NLP-based News Content Metrics

• implement and refine Natural Language Processing (NLP) methods to operationalize public sphere concepts in political news
• develop and validate content-based metrics (e.g. party visibility, viewpoint diversity, emotionalization intensity) using multilingual news corpora
• integrate entity linking, stance detection, sentiment/emotion analysis, and topic modeling into a framework
• collaborate with PhD and other researchers to validate automated metrics against manual content analysis

News Recommender System (NRS) Development

• develop multi-objective ranking and scoring mechanisms that combine NLP-based metrics with user metrics
• implement and optimize Pareto-based and reinforcement learning approaches (e.g. Deep Pareto Reinforcement Learning) to balance competing public-sphere objectives
• build and maintain the NRS pipeline that produces distinct user news feeds for subsequent testing
• evaluate recommender performance using standard metrics
• present results at international workshops, conferences, and lead as well as contribute to publications in academic journals

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications. They may also pursue doctoral studies outside of working duties.

This project introduces a fundamentally new way of studying the public sphere by designing and testing models of algorithmic news supply that translate normative democratic ideals into experimentally observable news environments. More information on the project is available at:

Public Spheres for Democracy: Journalism and Communication Studies, esp. Digital Journalism

As PhD Student, you will contribute to this approach by developing conceptual and empirical measures of public sphere principles and applying them to the systematic analysis of political news content.

In the period from 01.03.2026 until 29.02.2028 duties include academic services in the project named above.

In the period from 01.03.2028 until 28.02.2029 duties primarily include research.

Research associates may also pursue independent research and further academic qualifications. They may also pursue doctoral studies outside of working duties.

The position is funded by the Hector Fellow Academy (HFA, first two years) and the University of Hamburg (third year). The PhD project will address plasticity of the visual neural system in humans in the context of visual perceptual learning, both in healthy and visually impaired individuals.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The research associate will have the opportunity to conduct cutting-edge research at the intersection of ultracold quantum gases and ultrafast physics for investigating novel quantum systems in a joint research project of the groups of Prof. Dr. Markus Drescher and Prof. Dr. Klaus Sengstock.

The project involves generating ultracold rubidium atoms arranged in arbitrary geometries using optical tweezer technology for designing new functional quantum systems. As a unique tool, ultrafast laser pulses are used to excite atoms into high-lying Rydberg states for quantum simulation or to ionize ultracold atoms for investigating fundamental properties of atom-ion hybrid systems with applications in quantum technology.

Correlative light and electron cryo-microscopy (cryoCLEM) opens new avenues in structural biology by enabling resolving protein structures in situ within cells. To this end, cryoCLEM combines the advantages of light microscopy and cryoEM. Light microscopy allows for the identification and localization of cellular components using specific labelling with fluorescent dyes, while cryoEM provides superior resolution down to the sub-molecular scale. Recent years have seen significant improvements in the available cryoEM and light cryo-microscopy technologies, resulting in the rapid introduction of new instruments by manufacturers. In a project funded by the DFG, we will develop a modular, open-platform sample transfer station to streamline the movement of cryo-samples between different sample holders along a cryoCLEM workflow.

We are looking for a motivated researcher who will be in charge of developing and overseeing the testing of the novel cryoCLEM sample transfer station.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications. They may also pursue doctoral studies outside of working duties.

The Cluster of Excellence “Quantum Universe” performs research to understand mass and gravity at the interface between quantum physics and cosmology. The research team includes leading scientists from mathematics, particle physics, astrophysics, and cosmology at the University of Hamburg and DESY.

We invite applications for a doctoral research associate working on particle acceleration in neutron star mergers. Such objects can contribute to the flux of ultra-high energy cosmic rays, gamma-rays and neutrinos. They can also lead to gravitational wave bursts of which at least one case has been detected by ground based gravitational wave detectors in coincidence with photons. In this project the PhD student will model particle acceleration and propagation within and from these objects by applying and further developing Monte Carlo and particle-in-cell codes. The goal is to predict multi-messenger signatures that can then be compared with data.

Doctoral research associates will become members of the Quantum Universe Research School (QURS), which provides academic and key skills training, as well as career planning support. In addition, they will receive individual budgets to facilitate the attendance of summer schools and conferences, and to support other educational measures. Additional travel money for project-specific duties will be provided by the hosting research groups. Doctoral researchers may participate in the organization of the Cluster via an early career council.

Duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

• establishing CRISPR-Cas9 technologies in the fungal pathogens
• molecular cloning and fungal transformation
• plant infection assays
• support teaching (2,6 LVS) in course Masters in Plant Science (MOPS)

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications. They may also pursue doctoral studies outside of working duties.

The Cluster of Excellence “Quantum Universe” performs research to understand mass and gravity at the interface between quantum physics and cosmology. The research team includes leading scientists from mathematics, particle physics, astrophysics, and cosmology at the University of Hamburg and DESY.

We are going to use astrophysical observations to search for signatures of axion-like particles. The mixing of axion-like particles with photons of different energies is determined by the intervening astrophysical magnetic fields. We are going to search for spectral signatures of gamma-ray and X-ray emission from Galactic and extra-galactic objects using the most recent models for the magnetic fields along the line-of sight.

Doctoral research associates will become members of the Quantum Universe Research School (QURS), which provides academic and key skills training, as well as career planning support. In addition, they will receive individual budgets to facilitate the attendance of summer schools and conferences, and to support other educational measures. Additional travel money for project-specific duties will be provided by the hosting research groups. Doctoral researchers may participate in teaching at the University and in the organization of the Cluster via an early career council.