About Qilimanjaro
Qilimanjaro is building full-stack superconducting quantum computing systems, combining QPUs, cryogenic infrastructure, control electronics, racks, cabling, instrumentation, software and deployment infrastructure. Our Systems & Engineering division turns quantum processors into complete, reliable and scalable quantum computers.
We are looking for a Quantum Hardware Engineer to join our Systems & Engineering division.

Why this role matters
Systems & Engineering is the division that turns a quantum processor into a machine that runs reliably, day after day. We own the setups: cryogenics, wiring, control electronics, racks, instrumentation, thermal and mechanical design, and the Python that drives them. Our machines run on customer sites, not only on our own bench.
Our hardware base is currently growing faster than our team. This is system-level work rather than component design: you decide which part belongs in which line and determine why a chain misbehaves once it is fully connected, rather than designing boards or components from scratch.



The qubit is the most sensitive instrument in the building, and it usually reflects the state of the electrical or thermal chain in front of it. A large part of this role is interpreting that signal and addressing the root cause.

Main ownership areas:
Within six months you will take ownership of one setup end to end — its wiring, its cooldowns and its numbers. You become the person the team relies on to confirm whether that setup can be trusted.
The role spans two tracks. No one works in only one of them, as both involve travel and debugging, but you choose the one you would prefer to focus on:

Electronics and Instrumentation — room-temperature signal chains, RF and DC. Bench measurement, component characterisation, grounding and noise, control electronics, racks, board and packaging support.
Cryogenics, Vacuum and Thermal — dilution refrigerators, cooldowns, cryogenic wiring and thermalisation, heat loads and

📌 Quantum Hardware Engineer (Barcelona)
🏢 Qilimanjaro Quantum Tech
📍 Barcelona