R&D Optical Engineer – Optical Communication in Free Space W/M

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Update on 12/07/2024
  • Contract type:  Permanent contract

  • Work time:  Full time

  • Location Rennes

Who are we ?

Founded in 2013, Cailabs is the global specialist in laser beam shaping, particularly through a unique and patented technology (MPLC), originating from scientific laboratories. The company designs, manufactures, and develops innovative photonic solutions for the aerospace, industrial (laser machining), telecommunications, and defense sectors.

Since 2020, Cailabs has experienced accelerated growth in the field of optical ground stations, enabling communication between satellites and Earth using lasers, and has now a central position in this market. Currently, one major area of activity for Cailabs is its optical ground stations TILBA-OGS, which incorporate Cailabs' technological core (MPLC) to facilitate ultra-high-speed communications despite atmospheric conditions.

Cailabs currently has over 90 employees, including 25 PhD holders. With 26 families of filed patents, the company is recognized as one of the most innovative SMEs in France.

Job description

Do you want to apply and enhance your optical skills through innovative technical projects in areas such as free-space laser communications?

Join the R&D department at Cailabs!

After experience in research and development in industry or academic research, come join a dynamic team of engineers and Ph.D. holders who share your desire to apply their skills to challenging technical endeavors. You will find collective inspiration and strong intellectual interest in your work. You will be immersed in a cutting-edge technology company, from prototype development to industrialization phases.


In this team, your main responsibilities are to:

  • Lead projects for the development of new optical systems and subsystems for horizontal laser telecommunication links,
  • Propose new system architectures and optical designs according to customer needs,
  • Identify, assess, select, and manage new suppliers and service providers,
  • Prototype, test, integrate, and interface different optical subsystems,
  • Supervise and train junior engineers,
  • Prepare documentation and technical reports for clients.

Essential skills

  • You have a minimum of 5 years of experience in the development of optical technologies, including academic research and thesis work.
  • You have received training in optics and possess practical expertise in the field. Your knowledge extends to various existing optical and photonic technologies (types of lasers, optical amplifiers, detectors, modulators, etc.).
  • You are proficient in the design of free-space optical benches, prototyping optical systems, and automated data acquisition and processing using programming languages.
  • You have experience in developing integrated prototypes that are robust in external environmental conditions.
  • You are independent, capable of identifying and solving problems, sometimes under time constraints.
  • You can lead and train engineers in innovative technologies and effectively communicate and coordinate with individuals from other fields such as mechanics and electronics.
  • You can discuss your technical projects in fluent English with your team, both in written and oral communication.

Plus points : 

  • Ability to work in a team
  • Ability to lead complex multi-disciplinary research projects
  • Strong synthesis and proactive skills
  • Knowledge of Matlab/Python and Zemax software is a plus.


When you join Cailabs, you will find :   

  • A dynamic team of engineers and Ph.Ds who share your wish to put their skills to work on stimulating technical challenges, 
  • A collective emulation and a strong intellectual interest in your work,
  • A company at the cutting edge of technology, from the development of prototypes to the industrialisation phases.

And also :   

  • Times of sharing and conviviality (annual seminar, meals, group games, sports activities, etc.)
  • A health insurance plan covered at 100% by Cailabs.
  • A bonus system to reward collective and individual performances
  • Joining Cailabs is finally the assurance that everything will be done to help you perform, improve and take up new challenges.

Find out more about us on www.cailabs.com 

Required languages

  • English English - Level advanced
  • French French - Level advanced

Réf: 428b9cc1-74c6-43c4-b6f0-c706b274f229


R&D Optical Engineer – Optical Communication in Free Space W/M

Permanent contract
Full time

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