QKD Systems Architect - Satellite & Network Studies

Quantum Space Systems GmbH; Wien; Hybrid; EUR 36,000 - 43,000; Full time

Benefits offered by this job

Hybrid work options

Vienna office

International project exposure

Job summary

Quantum Technology Laboratories GmbH in Vienna invites a QKD System Architect to advance satellite-based and terrestrial QKD networks, bridging theory and practical engineering.

You will perform system studies, evaluate architectures, and derive requirements while presenting results to partners and space agencies.

This role offers a hybrid workplace in Vienna, collaboration with international consortia, and opportunities to grow into senior positions.

Qualifications

• University degree in physics, quantum technologies, electrical engineering, computer science, mathematics, or a related technical field.
• Solid understanding of QKD principles, protocols, network concepts, trust models, and practical limitations.
• Understanding of QKD devices, including their architecture, implementation principles, limitations, and security-relevant assumptions.
• Ability to bridge theoretical security concepts with practical engineering constraints.
• Experience with system studies, technical trade-offs, modelling or simulation, and requirements engineering.
• Strong communication skills and the ability to interact confidently with technical and non-technical stakeholders.
• High level of ownership, structured thinking, and reliability in security-critical environments.
• Willingness to attend on-site review meetings and undertake project-related travel.

Responsibilities

• Perform system and network studies for satellite-based, terrestrial, and hybrid QKD networks.
• Evaluate QKD architectures, protocols, trust models, implementation options, assumptions, limitations, and security implications through structured trade-offs.
• Use modelling and simulation tools to assess QKD performance, coverage, key availability, and operational constraints.
• Derive system, network, interface, and security-related requirements and contribute QKD expertise to system architectures and network integration concepts.
• Prepare technical documentation and present results in project, design, and review meetings.
• Work closely with multidisciplinary engineering teams and contribute to large international consortia.
• Engage with governmental agencies, space agencies, customers, and project partners on QKD-related topics.

Skills

QKD principles

System studies

Modelling & simulation

Technical trade-offs

Stakeholder communication

Education

University degree in physics/quantum technologies/EE/CS/math

Tools

Modelling software

Simulation tools

System engineering tools

Job description

Quantum Technology Laboratories GmbH in Vienna invites a QKD System Architect to advance satellite-based and terrestrial QKD networks, bridging theory and practical engineering.

You will perform system studies, evaluate architectures, and derive requirements while presenting results to partners and space agencies.

This role offers a hybrid workplace in Vienna, collaboration with international consortia, and opportunities to grow into senior positions.