R&D internship: mechanical design F/H

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Published on 30/10/2025

  • 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).

Internship description

You will work within the technical team under the responsibility of the Mechanical Division and in conjunction with the project teams.

The internship project aims to develop or improve the various subsystems that make up our TILBA OGS product. 

As part of this internship, you will put your knowledge of system design and dimensioning into practice. The tasks involved in this internship may vary, ranging from system design and the manufacture of the first prototype to the drafting of assembly instructions to support the production teams.  

The various tasks involved in the internship will be as follows:  

  • Working with the company's various departments (optical, electronic and methods engineers),
  • Participating in system design and dimensioning, 
  • Producing the first prototypes using rapid prototyping (in-house) or external subcontracting,
  • Assembling mechanical sub-assemblies in order to iterate on designs based on feedback from the field.  Providing various technical deliverables (manufacturing files,
  • design justification documentation, parts lists, assembly instructions, etc.).

Essential skills

Key point: 

  • Master's student or 2nd or 3rd year engineering student
  • Proficiency in CAD software (preferably Solidworks) + drafting
  • System dimensioning (finite element analysis, choice of materials, etc.) 
  • Drawing and knowledge of different methods of manufacturing parts (machining, rapid prototyping, etc.) 

Bonus points:  

  • Rigorous, independent, methodical. 
  • Multi-disciplinary collaborative work 

 

By joining Cailabs, you will find:

A dynamic team of engineers and PhDs who share your desire to put their skills to work on stimulating technical challenges.
A collective spirit of emulation and a strong intellectual interest in your work.
A company at the cutting edge of technology, from prototype development to industrialisation.

And also:

Opportunities for sharing and socialising (annual seminar, meals, group games, sports activities, etc.)
A modern and pleasant working environment, conducive to collaborative work
Meal vouchers

 

Joining Cailabs means you can be sure that everything will be done to help you develop new skills.

For more information: www.cailabs.com

Réf: f1f3bc3c-60ed-4175-bf67-4875f5a25e2b

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R&D internship: mechanical design F/H

Internship
Full time
Rennes

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