Optical Product Development & Industrialization Engineer F/H

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Published on 12/11/2026
  • Contract type:  Permanent contract

  • 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 more than 200 employees, including 41PhDs. 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).

Post description

 

Within the Optical Development team, you will contribute to increasing the maturity of our optical subsystems for ground stations, transforming complex architectures into high-performance, manufacturable and reliable products.

You will be involved throughout the product development lifecycle, from development through to solution validation and qualification, including problem-solving activities and the preparation of technical documentation.

 

Working at the interface between Optics, Systems, Mechanics and Electronics, you will bring your product development experience to address technical challenges, improve system reliability and performance, and support products as they progress towards greater maturity.

 

You responsabilies : 

  • Incorporate integration, manufacturing and industrialization constraints from the early stages of product development;
  • Work closely with the Systems, Mechanics, Electronics, Methods, Quality and Production teams through to product qualification;
  • Propose and assess technical solutions in line with requirements, evaluate their impact and define their implementation to support product development;
  • Integrate optical systems, define testing strategies and improve the robustness of free-space or fiber-optic systems, while coordinating the various disciplines involved, including Mechanics, Electronics, Software and Laser Safety;
  • Analyze system performance and identify limiting factors or sources of variability;
  • Perform failure analyses and root cause investigations, then define and implement the identified solutions;
  • Finalize product version specifications and support industrialization by producing the required deliverables: design justification files, bills of materials (BOMs), drawings and procedures.

To learn more about our product : SES Achieves Optical Communications Milestone for Future meoSphere Network | Cailabs / Three optical ground stations, built as one distributed...

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You enjoy being closely involved in both the product and the technology : working hands-on, experimenting, understanding performance deviations and continuously improving solutions until they reach the required level of maturity.

 

Independent and pragmatic, you are able to step back and take a broader view of complex technical challenges. You work effectively across multiple engineering disciplines to deliver robust and practical technical solutions. Your technical leadership enables you to guide technical decisions, prioritize development activities and proactively drive projects forward.

 

You have hands-on experience in :

  • Developing products subject to stringent performance, stability, robustness and repeatability requirements in an industrial environment;
  • Transitioning an optical prototype into a reliable product suitable for series production;
  • Free-space or fiber-based optical systems.

Nice to have :

  • Experience with optoelectronic or photonic systems, optical communications, space systems or scientific instrumentation would be highly valued.

 

By joining Cailabs, you will find :

  • The opportunity to take part in an incredible human adventure, working alongside colleagues who share a strong team spirit built on challenge, intellectual stimulation, and responsiveness;
  • The chance to join a dynamic organization that combines agility with resources aligned with its ambitions;
  • A cutting-edge technology company involved in every stage, from prototype development to industrialization phase.

Benefits

  • Regular opportunities for team bonding and social events (annual seminar, team lunches, group games, sports activities, etc.);
  • 100% employer-covered health insurance;
  • A bonus scheme rewarding both collective and individual performance;
  • Joining Cailabs also means having the assurance that everything will be put in place to help you perform, grow, and take on new challenges.

Réf: 4e7bf252-b493-45b2-8cd2-b58565511e32

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Optical Product Development & Industrialization Engineer F/H

Permanent contract
Full time
Rennes

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