Research Engineer (M/F) Development of a bathymetric inversion method using optical satellite observations of waves
New
- IT in FTC
- 8 months
- Doctorate
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Laboratoire d'Etudes en Géophysique et Océanographie Spatiales
Contract Type
IT in FTC
Working hHours
Full Time
Workplace
31400 TOULOUSE
Contract Duration
8 months
Date of Hire
01/12/2026
Remuneration
between €3,143.64 and €4,267.31, depending on experience
Apply Application Deadline : 09 October 2026 23:59
Job Description
Missions
Optical missions (e.g., Sentinel-2) with regular revisit intervals provide global coverage, but their application to wave analysis or bathymetry remains limited by the need for data that is dense and consistent both spatially and temporally. This is also true for on-demand video-type missions (JILIN, Satellogic, Planet, C03D) or tri-stereo and sequence missions (Pleiades, Pneo). Existing methods rely on dense temporal sequences or regular spatial grids, which are incompatible with opportunistic or partial satellite acquisitions. A new method called “Cube” is currently being developed to process irregular data (both spatially and temporally), where conventional methods require dense and regular sequences. The new matrix-based approach will also enable computational optimization on CNES's TREX HPC system, resulting in a significant speed advantage over existing methods as well as optimal processing of irregularly acquired data (spectral bands with different resolutions, variable times, scattered data) and optimal processing of spatiotemporal data (from optical or radar sources).
Activity
Preliminary simulations using data generated by the CROCO model were conducted to test the Cube method on rapid time series. A collaboration with CNES teams is underway to establish benchmarks for these methods using this C03D-type format. Preliminary tests of coastal C03D acquisitions in 2026 will be useful for validating the methods against this new format, which has already been anticipated through JILIN. Ground-truth measurements—including wave and bathymetric data—have been acquired accordingly. The work will involve further developing the code and calibrating and validating it using in situ measurements.
Your Profil
Skills
Knowledge of wave physics, space missions, and HPC. The code is written in Python.
Your Work Environment
Office work, in collaboration with teams from SHOM and CNES
Compensation and benefits
Compensation
between €3,143.64 and €4,267.31, depending on experience
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UMR5566-RAFALM-005 |
|---|---|
| Line of business | IT, Statistics and Scientific Calculation |
| Job Type | Scientific Calculations Expert |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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