Postdoc/software engineer positions within TREX Center of Excellence in Exascale Computing

We invite applications for 1 postdoc and 1 temporary software engineer positions in the group of Prof. Claudia Filippi at the University of Twente, The Netherlands, within the newly funded European Center of Excellence TREX – “Targeting Real chemical accuracy at the EXascale”, which will commence its activities in October 2020. Hiring will start in October and continue for about one year.

TREX federates European scientists, HPC stakeholders, and SMEs to develop and apply quantum mechanical simulations in the framework of quantum Monte Carlo. This methodology encompasses various techniques at the high-end in the accuracy ladder of electronic structure approaches and is uniquely positioned to fully exploit the massive parallelism of the upcoming exascale architectures. A main focus will be the development of a user-friendly and open-source software platform in the domain of stochastic quantum chemistry simulations, which will enable the convergence of high-performance and high-throughput computing.

Postdoc candidates should have a PhD in chemistry, physics, or a closely related field, with a good understanding of methods in quantum chemistry or condensed matter physics, and a strong interest in method and software development. Software engineers should have a strong background in high performance computing and, preferably, some knowledge of quantum mechanics.

The candidates should submit a letter, including CV and names/email addresses of 2 or more references to Prof. Claudia Filippi (

Postdoc "Electronic excitations of light-converting systems" (Leppert)

We are looking for a postdoc interested in electronic structure theorz methods, in particular density functional theory and Green's function-based many-body perturbation theory. The goal of this project is to develop methods that allow for accurate calculations of charged and neutral excitations within the framework of Kohn-Sham density functional theory, i.e., at moderate computational cost. These methods will be applicable to solids, in particular the halide perovskites, in which spin-orbit coupling plays an important role.

You will work in the group "Electronic excitations of light-converting systems" (Dr. Linn Leppert). We are passionate about using and developing electronic structure theory to understand electronic excitations in complex inorganic and organic systems. A particular focus in the last years has been the study of halide perovskites for energy applications, and, more recently, of natural light-harvesting.

Postdoc candidates should be enthusiastic and highly motivated about research, and have a PhD in physics, chemistry or in a closely related discipline. A background in electronic structure theory is desirable, and strong programming skills are essential. Strong communication skills, including fluency in written and spoken English, are mandatory.

If you are interested, you are encouraged to apply by sending a short motivation letter (half a page), describing your research interests and why you are applying for this position, a detailed CV including a list of your publications, and one letter of recommendation to Only complete applications will be considered.

For more information about the position, do not hesistate to contact Dr. Linn Leppert at