Robbert Krebbers


The Programming Languages group at Delft University of Technology is looking for:


It is important to develop software that is robust, fast, faultless, and secure. Formal verification is an effective way of establishing that software enjoys certain properties (e.g. it does not crash, does not have data-races, behaves according to some protocol or mathematical specification) for all possible inputs. Over the last years, significant progress has been made in formal verification of challenging programming concepts such as pointers, (fine-grained) concurrency, higher-order functions, modules, etc. However, there are still many important concepts that have received conceivably less attention, such as:

You will work on developing next-generation formal verification techniques and tools for programming concepts such as the ones mentioned above. The exact research direction which will be determined based on the common interests of the candidate and the supervisor.

This work will revolve around Iris: a higher-order concurrency separation logic framework that is implemented in the Coq proof assistant. Iris has been successfully used for a variety of applications including but not limited to logical-relations for relational reasoning, program logics for relaxed memory models, program logics for object capabilities, and a safety proof for a realistic subset of the Rust programming language.

The successful candidate will work under the supervision of Robbert Krebbers (daily supervisor) and Eelco Visser (promotor).



I will be considering applications until the position is filled. If you are interested in one of the positions, do not hesitate to contact me directly at (λ x y . mail @ x y . nl) robbert krebbers.

Please apply here by submitting a detailed CV, contact information for two references, a letter of motivation and a detailed transcript of university grades. Please also attach a (draft) version of your Master thesis.

The starting date will be decided with the candidate (earlier dates are preferred).

Conditions of employment

TU Delft offers a customizable compensation package, a discount for health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged. An International Children's Center offers childcare and an international primary school. Dual Career Services offers support to accompanying partners. Salary and benefits are in accordance with the Collective Labor Agreement for Dutch Universities.

As a PhD candidate you will be enrolled in the TU Delft Graduate School. TU Delft Graduate School provides an inspiring research environment; an excellent team of supervisors, academic staff and a mentor; and a Doctoral Education Program aimed at developing your transferable, discipline-related and research skills. Please visit for more information.

The organization

The Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) of TU Delft is known worldwide for its high academic quality and the societal relevance of its research programs. Offering an international working environment, the faculty has more than 1100 employees (including about 500 PhD students) and more than 3000 bachelor's and master's students. Together they work on a broad range of technical innovations in the fields of electrical sustainable energy, microelectronics, intelligent systems, software technology, and applied mathematics.

The Software Technology (ST) Department is one of the leading Dutch departments in research and academic education in computer science, employing over 150 people. The ST Department is responsible for a large part of the curriculum of the bachelor's and master's programs in Computer Science as well as the master's program Embedded Systems. The inspiration for its research topics is largely derived from technical ICT problems in industry and society related to large-scale distributed processing, embedded systems, programming productivity, and web-based information analysis.

The Programming Languages Research Group is an internationally leading research group in programming languages, and active in areas such as language engineering, language design, domain-specific languages, software verification, and program logics. The section employs over 15 people, including academic staff, around 10 PhD students, and two postdoctoral researchers. The group is responsible for programming and programming languages education at the bachelor and master's levels in the TU Delft Computer Science curriculum.