SoftQuantus is building next-generation quantum infrastructure in Europe, with a long-term objective of developing scalable trapped-ion quantum computing systems focused on stability, reproducibility, and operational reliability.
We are seeking a PhD-level experimental physicist to join as a technical cofounder and lead the hardware development effort.
Role Overview
The Founding Quantum Hardware Scientist will:
Lead the design and construction of a trapped-ion experimental platform
Architect scalable ion trap systems (e.g., Yb⁺ or Ca⁺)
Define and manage the system error budget
Design laser, vacuum, RF, and control architectures
Build a roadmap from single-ion demonstrator to multi-qubit system
Establish laboratory setup, supplier network, and experimental workflows
Contribute to grant proposals and technical strategy
This is a long-term technical leadership role with equity participation.
Required Background
PhD in Experimental Quantum Physics or closely related field
Hands-on experience with trapped-ion systems
Experience with ultra-high vacuum (UHV) systems
Laser stabilization and optical alignment
RF drive and ion trap control
Calibration, drift management, and noise analysis
Experience running real experimental setups (not simulation-only)
Preferred:
Experience in scaling ion traps
FPGA or real-time control systems
Publications in ion trapping or quantum hardware development
Prior startup or lab leadership experience
What We Are Building
SoftQuantus is developing:
A vendor-neutral quantum control and benchmarking layer (QCOS)
Hardware-level reliability and diagnostic frameworks
Certification-grade benchmarking pipelines
Hybrid HPC–Quantum workflows
The hardware effort will integrate tightly with these control and reliability systems.
Equity & Structure
This is a cofounder position.
Equity participation and vesting structure will reflect technical leadership, commitment level, and long-term involvement.
We are looking for a partner to build a 10-year deep-tech company, not a short-term project.
