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Quantum Key Distribution (QKD) Payload Engineer (all genders)

icon building Unternehmen : Quantum Technology Laboratories
icon briefcase Auftragstyp : Vollzeit
icon geo-alt Wien, Österreich

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Arbeitsbeschreibung - Quantum Key Distribution (QKD) Payload Engineer (all genders)


At Quantum Technology Laboratories GmbH (qtlabs), we are at the forefront of innovation in optical and quantum-based communication technologies. Our team develops cutting-edge quantum key distribution (QKD) systems and optoelectronic solutions for space and terrestrial applications. Based in Vienna, our center of excellence drives technological advancements that secures communication around the world.


Quantum Technology Laboratories GmbH is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees!

We are expanding our team and are looking for a motivated engineer to drive the next generation of our Quantum Key Distribution (QKD) payloads for space applications. You will contribute across multiple projects, working at the intersection of quantum technologies, electronics, and thermo-mechanical engineering. If you are excited about bringing cutting-edge quantum communication into orbit, this role is for you. 



  • Contribute to the development and continuous improvement of our QKD payload, from concept through flight qualification.

  • Drive technical decisions within your domain and take ownership of subsystem design choices.

  • Collaborate closely with electronics engineers (opto-electronics, digital/analog, FPGA interfaces) and thermo-mechanical engineers (thermal control, structural design).

  • Plan and execute laboratory verification, characterization, and system-level testing of optical, electronic, and QKD-specific components.

  • Prepare technical documentation, test reports, interface specifications, and customer deliverables.

  • Support external environmental and space-qualification campaigns (vibration, TVAC, radiation, EMC).

  • Contribute to continuous systemization and maintain clear requirements, interfaces, and architecture documentation.

  • Work across several mission and technology projects simultaneously, contributing QKD expertise and hands-on engineering. 





  • Degree in physics, electrical engineering, photonics, aerospace engineering, or related field; background in Quantum Key Distribution (QKD) or quantum optics strongly preferred.

  • Solid understanding of QKD protocols, photon sources/detectors, optical components, timing/synchronization, and system architectures.

  • Experience with laboratory work (optical setups, measurement equipment, data acquisition).

  • Ability to work autonomously, make informed technical decisions, and drive design iterations.

  • Strong analytical mindset with attention to detail and documentation discipline.

  • Excellent communication skills and motivation to work in interdisciplinary teams.

  • Experience in space systems, environmental testing, or hardware verification is a plus, but not . 





  • Work on mission-critical quantum technologies that will define future secure communication infrastructure.

  • Join a fast-growing, interdisciplinary team with experts in optics, electronics, mechanics, and quantum science.

  • Shape real hardware that goes into space - prototypes, flight models, and qualification campaigns.

  • Flat hierarchies, ownership, and the opportunity to drive innovation in a rapidly evolving field. 

  • A collaborative and innovative environment in Vienna, a global hub for quantum research and space technology.

  • Flexible work arrangements in a hybrid model combining remote and onsite collaboration

  • The opportunity to make a lasting impact on the future of quantum technologies

  • Balanced work-life integration for our employees

  • Attractive workplace with excellent infrastructure at Wienerberg

  • Great Italian espresso

  • Humorous and friendly work atmosphere


The minimum gross salary for this position is € 3,499.78 per month (based on full-time employment) in accordance with the collective agreement. However, there is a willingness to offer a higher salary depending on experience and qualifications.


Quantum Technology Laboratories GmbH is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees!


We look forward to receiving your application!




Original job Quantum Key Distribution (QKD) Payload Engineer (all genders) posted on GrabJobs ©. To flag any issues with this job please use the Report Job button on GrabJobs.
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