If you are currently employed in academia and would like to work within the Aquila consortium, please get in touch with us through this form, or reach out to individual members, to discuss potential collaborations.
We have opportunities for people interested in joining our institutions, at different levels of seniority:
- Bachelor and Master projects, for internships at bachelor or master level,
- PhD projects, for longer projects leading to a PhD in cosmology and/or data science,
- Postdoctoral positions and Fellowships, if you hold a PhD degree in a relevant field (including astronomy, statistics, or computer science),
- Faculty positions, if you are looking for a permanent academic position in one of our institutions.
Bachelor and Master projects
We continuously have opportunities for bachelor and master projects in our different institutions, which we typically directly discuss with candidates. Please choose the person you would like to work with and make direct contact by email.
Institut d’Astrophysique de Paris
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New October 2025: Title: Tessellations in cosmological N-body simulations Tessellation techniques are widely used in observational and computational cosmology to adaptively sample sets of data points while controlling signal to noise ratio. They are useful to analyze the morphology of the observed large-scale galaxy distribution (e.g., the Euclid survey, which represents the main collaborative framework of this project, but also DESI, LSST, etc…), or simply for obtaining accurate estimates of the local density and velocity field in the dark matter distribution generated from a N-body simulation, for subsequent post-processing to create simulated observations, such as synthetic Lyman-alpha forests (e.g., DESI), virtual galaxy catalogs (notably Euclid, but also DESI, LSST), or mock gamma-rays sky surveys for indirect detection of dark matter (e.g., Fermi LAT). However, tessellations methods are still not free of noise and usually require additional processing to obtain a smoother representation of the data. In particular, an important challenge is to be able to accurately measure the velocity field and its spatial derivatives in a cosmological N-body simulation. Here we propose to do so by applying a local adaptive convolution to the tessellation network, which can be performed directly with the appropriate percolation algorithm, and to test the ability of such an algorithm to generate smooth velocity fields and their derivatives, with comparisons to methods already existing in the literature.
Further readings: Bernardeau F. & Van de Weygaert, 1996, Cappellari M, Copin Y., 2002, Hahn O, Angulo R., Abel T., 2015, Saga S., Taruya A., Colombi S., 2022.
Keywords: Numerical simulations, Modelling,
Requirements: Python, C or C++ or F90, fluent in English
Start date and duration: 2026-03-09, for ~4 months
Contact/apply: Please provide a CV / transcripts, Guilhem Lavaux (guilhem.lavaux@iap.fr) and Stéphane Colombi (colombi@iap.fr)
PhD projects
Institut d’Astrophysique de Paris
- In addition to the above project, please contact faculty members (Guilhem Lavaux, Florent Leclercq) who may have special opportunities.
Postdoctoral positions and Fellowships
CEA Saclay, CosmoStat group
New October 2025 Postdoctoral Position in Field-Level Inference of Weak Lensing As part of the ERC-funded OCAPi project, we invite applications to work on field-level inference of cosmic shear and apply it to Euclid’s weak lensing data. Details about this position can be found here.
Application deadline: December 15.
Stockholm University
- New September 2025: WThe Physics Department at Stockholm University invites applications for postdoctoral positions. We are looking for researchers with expertise in computational, theoretical, or observational projects to advance and apply state-of-the-art machine learning and AI methods in astrophysics and cosmology. Please see this page.
Imperial College London
- The Imperial Astrophysics group is interested in hearing from potential candidates to various fellowship opportunities. Please see this page.
Institut d’Astrophysique de Paris
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New October 2025: We have an open postdoctoral position in artificial intelligence and cosmological data analysis at the IAP.
The successful candidate will join this vibrant team to develop and apply simulation-based Bayesian and AI methods for the scientific exploitation of Euclid early-data releases, in particular galaxy clustering, and to produce synthetic galaxy catalogs. The position is a 36-month fixed-term contract (full-time) with a negotiable start date that must occur before the end of 2026. The gross monthly salary ranges from €2,800 to €3,500, depending on qualifications.
The working language of the team is English. Applicants must hold a PhD in physics, astrophysics or a closely related field and have no more than three years of post-doctoral experience (or equivalent research experience). We seek candidates with strong expertise in cosmology, Bayesian statistics and/or data-driven methods, and excellent scientific writing and presentation skills in English. Experience with high-performance computing or machine learning is a plus.
Please submit a CV, cover letter, list of publications, an approximately three-page research proposal and up to three letters of recommendation via the online portal: https://shlink.aquila-consortium.org/postdoc-iap-apply. Direct any enquiries to Guilhem Lavaux (guilhem.lavaux@iap.fr) and Florent Leclercq (florent.leclercq@iap.fr).
Further information about the IAP and the research group is available at https://www.iap.fr and at the Aquila Consortium website. The IAP offers excellent computational resources, a stimulating interdisciplinary environment, generous travel funding, flexible working hours and a strong commitment to equality, diversity and inclusion.
Deadline for application is January 1st 2026, including letter of recommendations
Max Planck Institute for Astrophysics
- The regular postdoctoral programme at MPA is announced annually in the fall on the AAS job register.
Faculty positions
Institut d’Astrophysique de Paris
- France has yearly calls for senior permanent positions at CNRS and CNAP. The competition is nation-wide and opened to anyone. It is advised to reach out to local staff to know more about how to get support. Please see this page.
- Sorbonne Université occasionally advertises lectureships to work at the IAP.