R&D internship: Digital simulation of an optoelectronic system for satellite-to-ground optical communications F/H

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Published on 16/10/2025

  • Contract type:  Internship

  • Work time:  Full time

  • Location Rennes

The company

Founded in 2013, Cailabs designs, manufactures, and develops innovative photonic solutions for the space, industry, telecommunications, and defense sectors. A global specialist in laser shaping, the company has accelerated its growth in the space field with turnkey optical ground stations that integrate atmospheric turbulence compensation technology. This makes it one of the first companies to harness very high data rates enabled by optics in a commercial ground station.

Cailabs currently has 150 employees, including 35 PhDs. With 29 patent families filed, the company is one of the most innovative companies in France. It is headquartered in Rennes, with offices in Paris and Washington (USA).

Job description

Laser communications represent the next generation of secure, high-speed space communications. Dedicated to free-space optical communications, the TILBA solution improves the reliability of satellite links as well as naval, aeronautical (aircraft, drones) and terrestrial links. 

You will work in the R&D team under the supervision of a PhD in physics, R&D engineer and expert in numerical simulations. The internship project aims to develop and improve optical and opto-electronic systems useful for the TILBA solution through numerical simulations representative of real components. As part of this internship, you will put your knowledge of Python programming, geometric and wave optics, and optoelectronics into practice (e.g. to model sensor noise effects). Tasks may be adapted according to your background and interests. 

Your work will benefit the entire R&D department in addressing optical problems in the space sector. 

 

Your objective will be to develop an optoelectronic system in digital simulation to improve our TILBA product range systems for space communications.  

You will have the opportunity to apply and improve your scientific knowledge, and you will learn to work in a team in a corporate environment on concrete topics. 

 

Profile required

Key point: 

  • Affinity for programming and numerical simulation  
  • Training in optics during the course 

Bonus point:  

  • Programming skills (Python) 
  • Affinity for applied research 
  • Rigour, motivation and autonomy  

When you join Cailabs, you'll find :

  • A dynamic team of engineers and PhDs who share your desire to apply your skills to stimulating technical challenges,
  • Collective emulation and a strong intellectual interest in your work,
  • A company at the cutting edge of technology, from the development of prototypes through to the industrialisation phases.

Plus :

  • Time for sharing and conviviality (annual seminar, meals, group games, sports activities, etc.).
  • A modern, pleasant working environment, conducive to collaborative working
  • Luncheon vouchers

Finally, joining Cailabs is the assurance that everything will be done to help you develop new skills.

For more information: www.cailabs.com

Réf: 1f14323a-1db7-4f40-95b7-57ccd97d778d

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R&D internship: Digital simulation of an optoelectronic system for satellite-to-ground optical communications F/H

Internship
Full time
Rennes

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