RF Sub Systems Design & Characterization Intern (Quantum Computing)

TL;DR

RF Sub Systems Design & Characterization Intern (Quantum Computing): Support the design, development, and validation of RF hardware used to control qubits with an accent on cryogenic components and readout chain optimization. Focus on prototyping RF sub-systems on PCB, performing lab measurements using VNAs, and automating test workflows with Python.

Location: Paris & Aubervilliers, France

Company

hirify.global is developing the first universal, fault-tolerant quantum computer based on Schrödinger cat qubits.

What you will do

• Integrate and test control electronics and instrumentation (RF, DC) under senior guidance.
• Characterize, simulate, and design RF hardware such as bias tees and filters for room and cryogenic temperatures.
• Prototype RF sub-systems on PCB for qubit control, ensuring proper electromechanical integration in cryostats or racks.
• Analyze RF manufacturing technologies (substrates, connectors, packaging) regarding performance and EMC.
• Perform lab measurements and data acquisition using VNAs and spectrum analyzers.
• Develop and automate test programs in Python to validate system hardware conformity.

Requirements

• Engineering or Master's student specializing in microwave frequencies, RF electronics, applied physics, or instrumentation.
• Solid understanding of RF systems, S-Parameters, and wave propagation.
• Experience with RF test equipment, including VNA, Spectrum Analyzer, and oscilloscopes.
• Proficiency with RF CAD tools such as HFSS or Keysight ADS.
• Familiarity with Python for data analysis (NumPy, scikit-rf, matplotlib).
• English: B1/B2 level required.

Culture & Benefits

• One day off per month.
• Half of transportation cost coverage as per French law.
• Meal vouchers via Swile and access to a fully equipped kitchen.
• Opportunity to join an early-stage innovative startup in a passionate, friendly team.
• Collaborative environment focused on sharing knowledge and professional growth.