Opto-Mechanical Design Engineer W/M

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Update on 08/07/2024
  • 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

Are you eager to be at the heart of developing new products, driven by innovative technical projects in the space sector? Are you passionate about collaborative work within multidisciplinary teams, in a human-sized company?

Join our dynamic and motivated team to face exciting challenges and contribute to innovation in the space industry!


As an opto-mechanical engineer, you will be responsible for designing, developing, and optimizing complex optical systems integrated with mechanical components for optical satellite ground stations designed and developed by Cailabs. You will work closely with technical teams to ensure the performance and reliability of complex and innovative systems. 


Here are the main responsibilities of the position :

  • You design and model opto-mechanical systems using computer-aided design (CAD) software and optical simulation software such as Zemax, Code V, or others. 
  • You select and integrate optical and mechanical components, considering constraints, thermal stability, and optical performance, and you may perform mechanical and thermal structural calculations. 
  • You conduct tolerance analyses to ensure the manufacturability and achievement of performance specifications. 
  • You assemble mechanical parts, perform the assembly and alignment of opto-mechanical components. 
  • You conduct tests to verify the optical and mechanical performance of the system and make necessary adjustments to optimize system performance. 
  • You document all stages of the development process. 
  • You contribute to design plans, test reports, and user manuals to ensure traceability and reproducibility of the manufacturing process. 
  • You collaborate with multidisciplinary teams internally and manage relationships with suppliers (in France and abroad) to ensure the development of high-quality products. 

Essential skills

  • Graduated as an Engineer with a focus on optics, you have at least 3 years of experience in the design, integration, validation of opto-mechanical, optical or optoelectronic systems, and project management. 
  • You have extensive experience using optical software such as Zemax, Code V, or equivalents, and are proficient in a CAD software such as SolidWorks. 
  • You are recognized for your rigor, organization, and autonomy, and your ability to manage cross-functional projects. 
  • You have a strong capacity for adaptation and wish to join a rapidly growing, medium-sized company where you can be a driving force in proposals. 
  • You are passionate about innovation, enjoy technical challenges, and are creative. 
  • Your skills in written and oral communication enable you to interact with teams and partners in French and English. 

Required languages

  • English English - Level advanced

Réf: bd6f7d53-3c62-4cdb-bce1-e14fb35b48f2


Opto-Mechanical Design Engineer W/M

Permanent contract
Full time

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