Leo viridis
4 days ago
Postdoctoral Researcher in RF and Antennas for Satellite/Balloon Uplink LeoBlue in France
Degree Level
Postdoc
Field of study
Computer Science
Funding
12-month fixed-term postdoctoral contract, renewable/extendable depending on project progress. Salary is listed as > €35,000 and < €45,000 gross annual salary.
Deadline
Sep 30, 2026
Country
France
University
Leo viridis

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About this position
LeoBlue is recruiting a Postdoctoral Researcher in RF / Antennas for work on a terminal-to-satellite / balloon uplink and related downlink challenges. The position is based in Bordeaux, France, with possible travel to test sites in France or abroad. The role sits within LeoBlue’s R&D roadmap for direct communication between stratospheric platforms and standard consumer smartphones, with applications in emergency alerting and connectivity in areas without terrestrial networks.
The postdoctoral researcher will work upstream of product development, in close collaboration with a small multidisciplinary R&D team. Main topics include RF feasibility, link budgets, antenna architectures, propagation and sensitivity analysis, interference robustness, and the interaction between uplink and downlink. The work may also involve electromagnetic simulations, laboratory prototypes, preliminary test campaigns, anechoic chamber measurements, and balloon flights. There is also a cybersecurity dimension related to system robustness.
Research keywords: RF, antennas, satellite communications, balloon communications, wireless systems, Bluetooth, IoT, link budget, EMC, digital modulations, BER, cybersecurity.
Eligibility: a PhD in RF electronics, antennas, space communication systems, or a related field is required. The employer seeks candidates with demonstrated research experience in antenna design and/or link budgets for space or wireless systems. Scientific publications are preferred. Technical skills in HFSS, CST, or equivalent simulation tools, plus knowledge of RF chains, matching, filtering, propagation, and sensitivity analysis, are important. French and English communication skills are expected.
Funding: fixed-term postdoctoral contract for 12 months, renewable/extendable depending on project progress, with a gross annual salary between €35,000 and €45,000.
Deadline: 30 September 2026. Start date is listed as 1 October 2026, with an as-soon-as-possible note also mentioned in the posting.
Funding details
12-month fixed-term postdoctoral contract, renewable/extendable depending on project progress. Salary is listed as > €35,000 and < €45,000 gross annual salary.
What's required
PhD in RF electronics, antennas, space communication systems, or a related field. Demonstrated research experience in antenna design and/or link budgets for space or wireless systems is required, with scientific publications desired. Technical skills should include antenna design and simulation (HFSS, CST, or equivalent), RF electronics, transmit/receive chains, amplification, impedance matching, filtering, EMC, link budget, propagation, digital modulations, sensitivity, and BER. Knowledge of spatial constraints such as vibrations, thermal, and radiation is appreciated. Interest in Bluetooth, IoT, and multiple access technologies is a plus. Strong autonomy, ability to define and execute a scientific roadmap, and good written and oral communication in French and English are expected.
How to apply
Use the ABG job posting to apply for the postdoctoral contract. Review the role details, prepare your CV and research profile, and submit through the application process linked from the posting.
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