Senior Quantum Key Distribution (QKD) Engineer – Temporary Position
Location: Madrid, Spain
Start Date: September 2026

Contract Duration: Initial 6-month assignment, with the possibility of month-by-month extensions
We are seeking an experienced Senior Quantum Key Distribution (QKD) Engineer to join our team on a temporary basis. This role offers the opportunity to contribute to cutting-edge quantum communications and space infrastructure programmes while ensuring continuity across a portfolio of strategic European projects.

The successful candidate will be embedded within our New Programs and Space Infrastructures Department in Madrid, working alongside multidisciplinary teams on innovative quantum and optical communications initiatives.

Key Responsibilities
- Support the development and execution of advanced Quantum Key Distribution (QKD) and secure communications projects.
- Contribute to the design, implementation, and coordination of European and ESA-funded programmes.
- Prepare technical proposals and bids for European and institutional customers.




- Coordinate and collaborate with international partners, customers, and multidisciplinary consortia.
- Engage with institutional stakeholders, including the European Space Agency (ESA), the European Commission, and other strategic partners.
- Provide technical leadership in the definition of next-generation quantum communication and space infrastructure solutions.

Required Qualifications
- Master's degree or PhD in Physics, Telecommunications Engineering, Photonics, or a related discipline.
- 3–5 years of professional experience in quantum communications, with a strong focus on Quantum Key Distribution (QKD).
- Experience working within the space sector.
- Proven involvement in ESA and European-funded programmes, such as Horizon Europe, EuroQCI, or the Quantum Flagship.
- Experience in proposal writing, bid preparation, and the coordination of international consortia.
- Excellent written and verbal communication

📌 Quantum Engineer (Valencia)
🏢 Barrington James
📍 Valencia