About the role :
Nothing gets measured until a qubit is cooled to 10 millikelvin, wired, and instrumented — and you'll be the person who makes sure that chain never breaks. Between the chip and the measurement sits a full microwave chain: cold RF and DC wiring down the cryostat, attenuation and thermalization at every stage, then instrumentation and control racks at room temperature. That platform — our dilution cryostats and their measurement chains — is one of the company's most critical assets, and the Cryogenic & RF Platform Operations team owns it.
You'll lead that team: 7 engineers and technicians who run cooldown and warm-up cycles, modify cold and room-temperature RF and DC cabling on request, keep cryostats and instrumentation racks available and qualified, build new systems in-house, and act as the single entry point for our QPU design and characterization teams. Your mission is simple to state and hard to deliver: keep the platform available and reliable, because every hour it's down is an hour we're not measuring qubits.
Responsabilities
Keep the platform running
- Own the health and uptime of cryostats, wiring and instrumentation: preventive maintenance, corrective action, first-level troubleshooting
- Run routine V&V on RF and DC instrumentation, characterize the signal path, and catch drift before it becomes a problem
- Align with other team leads on RF and hardware architecture standards
- Plan and schedule the team's work against user requests and company iteration cycles
- Jump in yourself on cooldown/warm-up cycles and cabling changes when the team needs the extra pair of hands
- Build and maintain SOPs, manage stock, and keep supplier loops running (RF components, cryogenic consumables)
- Oversee in-house assembly, from cryostat builds to cabling, racks, and full system integration
- Support the design teams through validation (test campaigns, V&V) and sign off on new systems before they enter production
- Manage and develop a team of engineers and technicians: 1:1s, mentoring, hiring
- Own the team's budget and drive continuous improvement
Run day-to-day operations
Build and integrate new systems
Lead and grow the team
Requirements
- A Master degree in Electrical Engineering, Physics, or Production management — or equivalent experience.
- 7+ years hands-on experience with RF/microwave measurement chains, cryogenic systems, test benches, or comparable critical experimental infrastructure — in industry, in a large research facility, or on a pilot line
- Real, practical command of RF instrumentation and signal chains (VNA or spectrum analyzer measurement, cabling integrity, troubleshooting) — the kind of experience where you've personally built, wired, debugged or commissioned a system
- Experience leading a technical team, or clear readiness to step into your first team lead role
- Strong planning instincts under real-world constraints (tool availability, maintenance windows, competing requests), and the pragmatism to make good calls with incomplete information
- Professional English; enough French to work day-to-day on-site, with French classes covered by the company if you want to build on it
- Experience with dilution refrigerators or sub-kelvin cryogenics
- Microwave measurement at low temperature, or exposure to quantum technologies
- Lean or operational excellence practice
Educational Background:
Experience:
Nice to have
Working conditions
Working conditions
The platform spans two sites in Île-de-France, Aubervilliers and Paris 15th, with regular travel between them (roughly 80% Aubervilliers, 20% Paris 15th). This is a hands-on, on-site role.
Recruitment process
- Screening Call with Alexandra Talent Acquisition Specialist (30 min)
- Hiring Manager Interview with Antoine, your future manager (45 min)
- Technical case study on site (60 min) — prepared and presented on the day, nothing to do beforehand
- Leadership and Fit Interview (60 min)
Skills Required
- Master's degree in Electrical Engineering, Physics, or Production Management
- 5+ years of experience in a production or critical infrastructure environment
- Strong experience managing a team
- Professional proficiency in French and English, written and verbal
- Strong organizational, planning, process improvement, and real-time operational management skills
- Ability to collaborate effectively with multidisciplinary teams
- Commitment to quality, service orientation, and thorough technical documentation
- Knowledge of cryogenics
- Knowledge of RF instrumentation
- Experience in quantum technologies
What We Do
Founded in 2020, Alice & Bob secured $30 M funding in Series A. Today, we're recognized as one of the leaders in Quantum Computing. Our cat qubits are error corrected by design, reducing hardware requirements by up to 200 times compared to other platforms enabling fault-tolerant quantum computing at scale. Our headquarters is located in Paris, with offices in Boston, MA. We are 80+ smart and dedicated innovators, coming from 17+ countries and growing by the day. We are committed to one mission: build a useful quantum computer. Check open positions: bit.ly/joinusatAB
