RF Sub Systems Design & Characterization Intern M/F

Entangled Future; Porte d'Aubervilliers; Hybrid; EUR 16,000 - 21,000; Full time

Benefits offered by this job

Half transportation costs covered

Meal vouchers Swile and kitchen access

Job summary

Alice & Bob in Paris (Aubervilliers) is seeking an RF Sub Systems Design & Characterization Intern to support RF hardware development for quantum control. You’ll work under senior engineers to design, test, and validate RF components and sub-systems from room temperature to cryogenic environments.

The role covers integration, data acquisition, and automation of test workflows, with topics including cryogenic bias tees and RF readout optimization.

Qualifications

• Engineering or master's student in microwave RF / related field.
• Strong understanding of RF systems and S-parameters.
• Experience with RF test equipment and measurements.
• Familiarity with RF CAD tools (HFSS, Keysight ADS).
• Python for RF data analysis (NumPy, scikit-rf, matplotlib).
• Able to work in a team and communicate in English (B1/B2).

Responsibilities

• Integrate and test control electronics and instrumentation with senior engineers.
• Characterize and design RF hardware at room and cryogenic temperatures.
• Rapidly prototype RF sub-systems for Qubits control.
• Evaluate RF component manufacturing technologies for performance and feasibility.
• Assist with test bench setup, cabling, and equipment maintenance.
• Perform lab measurements using RF bench equipment (VNAs, analyzers).
• Define and automate test programs to qualify hardware.
• Prepare complete test plans and document results.
• Monitor stock of instruments and components.
• Collaborate with multidisciplinary teams to integrate quantum chip control systems.

Skills

RF systems knowledge

S-parameters

Wave propagation

Teamwork

English communication

Education

Engineering or Master’s student (4-5 years)

Tools

HFSS

Keysight ADS

VNA

Spectrum Analyzer

Oscilloscope

Python (NumPy, scikit-rf, matplotlib)

Job description

RF Sub Systems Design & Characterization Intern M/F at Alice & Bob, Paris & Aubervilliers. A intern-level full time position in the TCP - Test, Characterization & Packaging (backend nano) team, listed under hardware engineering.

We're a diverse team of 250+ brilliant minds from over 35 countries united by a single goal: to revolutionise computing with a practical fault-tolerant quantum machine. Are you ready to take on unprecedented challenges and contribute to revolutionising technology? Join us, and let's shape the future of quantum computing together!

Purpose of the role

As an RF Sub Systems Design & Characterization Intern, your mission is to support the design, development, integration, and validation of RF hardware used to control Quantum bits (Qubits). Guided by senior engineers, you will gain hands-on experience on leveraging performance RF instruments, characterizing cryogenic components, and automating test workflows.

Following the candidate’s abilities, there will be 3 main possible topics to focus on:

• Cryogenic Bias tee footprint reduction
• RF Readout chain optimization at room temperature
• RF Readout chain optimization at cryogenic temperatures

As part of the team, you will contribute to solving technical challenges involving the entire signal chain from room temperature to cryogenics, by designing RF sub systems prototypes on PCB, manipulating different instruments to acquire data, and gathering inputs from your market tech watch. Working closely with cross functional teams of engineers and scientists, you'll help to improve system performance and develop the next generation of quantum hardware platforms.

This internship will start in February 2027 for a duration of 5-6 months!

- Half of transportation cost coverage (as per French law)

- Meal vouchers with Swile, as well as access to a fully equipped and regularly stocked kitchen

Research shows that women might feel hesitant to apply for this job if they don't match 100% of the job requirements listed. This list is a guide, and we'd love to receive your application even if you think you're only a partial match. We are looking to build teams that innovate, not just tick boxes on a job spec.

Responsibilities

• Integrate and test control electronics and instrumentation (RF, DC, etc.) with the help of senior engineers.
• Characterize, simulate, and design RF hardware at room temperature and cryogenic temperatures (bias tees, filters, …)
• Rapidly design and prototype sub-systems for Qubits control, considering the electromechanical integration inside of the cryostat or the racks.
• Analyze and compare different RF component manufacturing technologies (substrates, processes, connectors, packaging, cables, etc.) in terms of performance, EMC, accessibility, and feasibility.
• Assist with test bench setup, cabling, equipment maintenance and monitoring.
• Perform lab measurements using RF bench equipment (VNAs and analyzers).
• Define, optimize, and automate the test programs needed to qualify or validate system hardware conformity.
• Preparing complete, well-documented test plans and reports results.
• Monitor instrument and component stock.
• Collaborate with multidisciplinary teams to develop and integrate systems required to control quantum chip architectures.

Requirements

• Engineering or master's student (4-5 years of higher education) specializing in microwave frequencies, RF electronics, telecommunications, applied physics, computing, instrumentation, or related fields.
• Solid understanding of RF systems, S-Parameters, and wave propagation.
• Experience with RF test equipment, signal characterization and analysis techniques (VNA, Spectrum Analyzer, and oscilloscope).
• Experience with RF cad tools (HFSS, Keysight ADS,…)
• Familiarity with Python for RF data analysis and post-processing (NumPy, scikit-rf, matplotlib).
• Familiarity of using basic lab and prototyping tools (multimeter, torque driver, power tools, soldering iron).
• Ability to work as part of a team, with a strong spirit of innovation.
• Excellent communication skills in English, both written and oral. (English level B1/B2)