CrawlJobs Logo
C12 Quantum Electronics Logo C12 Quantum Electronics · IT - Software Development

Quantum RF Engineer

France, Paris · Job Posted December 06, 2025
Apply Position
Job Link Share

Job Description

Your main responsibility will be contributing to the design & optimization of passive and active on-chip microwave components for qubit control, qubit-qubit interfacing and qubit readout. You would be performing EM and circuit simulations for individual components and integrated systems along with contributions to cryogenic measurements for component and system performance verification.

Job Responsibility

  • Contributing to the design & optimization of passive and active on-chip microwave components for qubit control, qubit-qubit interfacing and qubit readout
  • Performing EM and circuit simulations for individual components and integrated systems along with contributions to cryogenic measurements for component and system performance verification
  • Design and simulation of DC, RF and microwave on-chip components
  • Contributing to the cryogenic measurement
  • Contributing to the continuous improvement of our python based design repository and integration with simulation workflow
  • Occasional involvement in design of mechanical parts (Fusion 360, SolidWorks…) and PCBs

Requirements

  • At least Master's degree in Quantum Physics (preferred), Applied Physics, Electrical engineering, Nanotechnology or Nanoscience or other related disciplines
  • Previous experience designing and integrating RF & microwave components and subsystems
  • Previous electromagnetic simulations using industry standard tools such as HFSS, SONNET, ADS, Comsol
  • High-frequency (RF, microwave or mm-wave), IC or PCB design
  • Previous experience with chip design layout tools like Klayout, L-Edit
  • Design/development in Python
  • Great communication in English (verbal and written)

Nice to have

  • Previous experience with cryogenic RF and DC measurement
  • Knowledge of semiconductor device physics and microfabrication processes
  • Knowledge of fabrication principles and the constraints they impose on physical device parameters

What we offer

  • Flexible rhythm of remote work
  • Stock options for every employee (BSPCE/ESOP)
  • Two incredible office spaces in the heart of Paris (both next to the famous Panthéon!)
  • Sponsored trip to conferences around the world
  • A highly dynamic international team
  • Swile meal vouchers
  • Breakfast for all every Friday
  • Mental health support with moka.care
  • Training budgets/ Annual Learning & Development Allowance
  • Sabbatical leave (after 2 years in the company)
C12 Quantum Electronics - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Quantum RF Engineer

8 matching positions

RF Engineer for Quantum Hardware

C12 develops reliable & application-specific quantum computers, to solve highly ...
Location
Location
France , Paris
Salary
Salary:
Not provided
c12qe.com Logo
C12 Quantum Electronics
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 5+ years experience as an RF engineer
  • Experience developing electromagnetic simulations using industry standard tools such as HFSS, Maxwell, Comsol, or Cadence
  • Experience with designing and integrating microwave components and subsystems
  • Experience with high-frequency (RF, microwave or mm-wave), IC or PCB design
  • Experience with design/development in Python
  • Good communication in English (verbal and written)
Job Responsibility
Job Responsibility
  • Contributing to the design & optimization of passive on-chip distributed RF circuits for qubit control and performing & analyzing microwave simulations
  • Developing, with research scientists and other hardware engineers, microwave simulations for the on-chip RF circuits and its 3D packaging
  • Identifying cross-talks and loss mechanisms in RF circuits
  • Investigating discrepancies between simulated and achieved performance of fabricated devices
  • Develop a scalable architecture for routing the microwave signal (very low power) towards and between >100 qubits
  • Contributing to the continuous improvement of our simulation tools and their integration with Python-based custom layout/design tools
  • Fulltime
Read More
Arrow Right
New

Principal Quantum Engineer - Readout

Microsoft Quantum is building a topological measurement-based quantum computer t...
Location
Location
United States , Redmond
Salary
Salary:
142800.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Doctorate in Physics, Engineering, or related field AND 3+ year(s) experience in industry or in a research and development environment, could include completion of a post doctoral research position OR Master's Degree in Physics, Engineering, or related field AND 6+ years experience in industry or in a research and development environment OR Bachelor's Degree in Physics, Engineering, or related field AND 8+ years experience in industry or in a research and development environment OR equivalent experience
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
  • Ability to leverage artificial intelligence (AI) tools to drive innovation and efficiency
  • Ability to work in an 'AI-first' environment using modern AI tools to accelerate discovery through hardware development
Job Responsibility
Job Responsibility
  • Lead the design and test of scalable readout circuitry for topological qubits
  • Interface across teams to codesign the readout system with evolving qubit designs and control requirements, while making efficient use of company expertise
  • Document work, analyze, interpret and present measurement results, and participate in opportunities to present to customers and network with peers
  • Use engineering best practices to build tools and processes necessary to enable progress in quantum research
  • Uphold safety standards and practices including compliance with policies, adherence to safety in a variety of work environments, and escalating issues with appropriate urgency
  • Exhibit our Culture, and Values
  • Fulltime
Read More
Arrow Right

Senior Quantum Engineer

At Microsoft Quantum, we aim to empower science and scientists to solve the worl...
Location
Location
United States , Redmond
Salary
Salary:
119800.00 - 234700.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Doctorate in Physics, Engineering, or related field AND 1+ year(s) experience in industry or in a research and development environment, could include completion of a post doctoral research position
  • OR Master's Degree in Physics, Engineering, or related field AND 4+ years experience in industry or in a research and development environment
  • OR Bachelor's Degree in Physics, Engineering, or related field AND 6+ years experience in industry or in a research and development environment
  • OR equivalent experience
  • Ability to meet Microsoft, customer and/or government security screening requirements
  • Microsoft Cloud Background Check
  • Ability to leverage artificial intelligence (AI) tools
  • Ability to work in an AI-first environment
Job Responsibility
Job Responsibility
  • Design and test scalable readout circuitry for topological qubits
  • Interface across teams to codesign the readout system with evolving qubit designs and control requirements
  • Document work, analyze, interpret and present measurement results
  • Use engineering best practices to build tools and processes necessary to enable progress in quantum research
  • Uphold safety standards and practices
  • Fulltime
Read More
Arrow Right

Senior Quantum Measurement Engineer

Microsoft Quantum has assembled a talented and diverse international team to cre...
Location
Location
Denmark , Copenhagen
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Doctorate in Physics, Engineering, or related field AND experience in industry or in a research and development environment, could include completion of a post doctoral research position
  • OR Master's Degree in Physics, Engineering, or related field AND solid experience in industry or in a research and development environment
  • OR Bachelor's Degree in Physics, Engineering, or related field AND significant experience in industry or in a research and development environment
  • OR equivalent experience
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter
  • Citizenship & Citizenship Verification: This role will require access to information that is controlled for export under export control regulations, potentially under the U.S. International Traffic in Arms Regulations (ITAR) or Export Administration Regulations (EAR), the EU Dual Use Regulation, and/or other export control regulations. As a condition of employment, the successful candidate will be required to provide either proof of their country of citizenship or proof of their U.S. permanent residency or other protected status (e.g., under 8 U.S.C. § 1324b(a)(3)) for assessment of eligibility to access the export-controlled information. To meet this legal requirement, and as a condition of employment, the successful candidate's citizenship will be verified with a valid passport. Lawful permanent residents, refugees, and asylees may verify status using other documents, where applicable
  • Ability to leverage AI tools to drive innovation and efficiency (e.g., performance modeling and analysis, research gathering, day to day task automation)
  • Ability to design and build AI agents/copilots that assist with experiment setup, log triage, measurement report generation, protocol templating, and knowledge retrieval (e.g. instrument manuals, design docs)
  • Solid (PhD included) experience with low-noise electronic measurements (lockin amplifiers, analog pre-amps, etc.), cryogenic techniques (He3 cryostats or dilution refrigerators), electrical transport characterization (for semiconductors, dielectrics, and superconductors).
  • Solid experience with RF reflectometry measurements and time-domain control of qubits
Job Responsibility
Job Responsibility
  • Develop and run qubit experiments and recognize opportunities to innovate
  • You will demonstrate expertise with and perform measurement techniques to advance quantum practices and devices (e.g., low temperature, RF measurements).
  • You will identify opportunities to streamline and automate quantum measurement, and leverage expertise in instrumentation involved.
  • You will guide cross-team collaboration across Quantum for efficient use of company expertise and work across teams and ensure contact with others. You'll document work and make available internally and externally to the team to leverage work across teams.
  • You will support public engagements focused on quantum computing and support general outreach efforts with researchers, students, and the quantum curious. You may contribute to the creation of intellectual property to educate others about quantum computing.
  • You will use engineering best practices to build tools and processes necessary to enable progress in quantum research and share tips and techniques related to a particular instrument. You'll help develop tools and documentation and drive consistency and accessibility within teams.
  • You will model safety standards and practices including compliance with policies, adherence to safety in variety of work environments, and escalating issues with appropriate urgency. You may assist in defining and implementing safety protocols.
  • Embody our culture and values
  • Fulltime
Read More
Arrow Right

Junior Quantum Measurement Engineer

Founded in 2020 and based in the heart of Paris, C12’s mission is to be at the c...
Location
Location
France , Paris
Salary
Salary:
Not provided
c12qe.com Logo
C12 Quantum Electronics
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • At least a Master’s degree or comparable experience in electrical engineering, experimental physics, or a closely related discipline
  • Direct, practical experience with DC and RF/MW hardware, emphasizing real-world implementation over purely theoretical or simulated approaches
  • Experience with low-noise and high-bandwidth electronics
  • Skilled in python for instrument control, experiment automation and data acquisition
  • Quick to learn new concepts in quantum measurement and physics
  • Collaborative team player who bridges engineering and science effectively
  • Strong communication skills in English (oral and written)
Job Responsibility
Job Responsibility
  • Design, integrate, and optimize cryogenic quantum measurement systems, combining microwave electronics, biasing, and wiring solutions to ensure precise, calibrated, and low-noise signal performance across DC to high-frequency domains
  • Develop and innovate in experimental control, data acquisition, and system automation to maximize measurement fidelity, reproducibility and overall technical excellence
  • Perform DC and RF measurements at cryogenic temperatures on carbon nanotube quantum devices integrated into high-impedance cQED platforms, under supervision
  • Develop scalable data acquisition and analysis pipelines, establishing rigorous documentation standards for high-quality experimental outcomes
What we offer
What we offer
  • Stock options for every employee (BSPCE/ESOP)
  • Two incredible office spaces in the heart of Paris (both next to the famous Panthéon!)
  • Sponsored trip to conferences around the world
  • A highly dynamic international team
  • Swile meal vouchers
  • Vibrant office culture (team lunches, offsite events, Friday breakfasts..)
  • Mental health support with moka.care
  • Training budgets/ Annual Learning & Development Allowance
  • Sabbatical leave (after 2 years in the company)
  • Fulltime
Read More
Arrow Right

Quantum Data Performance Engineer - Systems Integration

Microsoft Quantum has assembled a talented and diverse international team to cre...
Location
Location
Denmark , Kongens Lyngby
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Master's Degree in Physics, Engineering, or related field. OR Bachelor's Degree in Physics, Engineering, or related field AND experience in industry or in a research and development environment OR equivalent experience.
  • Experience with large-scale data analysis, statistical modeling, and visualization tools (e.g., Python, R, MATLAB, PowerBI).
  • Experience building and maintaining automated data pipelines, databases, or cloud-based monitoring solutions.
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.
  • Citizenship & Citizenship Verification: This role will require access to information that is controlled for export under export control regulations, potentially under the U.S. International Traffic in Arms Regulations (ITAR) or Export Administration Regulations (EAR), the EU Dual Use Regulation, and/or other export control regulations. As a condition of employment, the successful candidate will be required to provide either proof of their country of citizenship or proof of their U.S. permanent residency or other protected status (e.g., under 8 U.S.C. § 1324b(a)(3)) for assessment of eligibility to access the export-controlled information. To meet this legal requirement, and as a condition of employment, the successful candidate’s citizenship will be verified with a valid passport. Lawful permanent residents, refugees, and asylees may verify status using other documents, where applicable.
  • Ability to leverage AI tools to drive innovation and efficiency (e.g., performance modeling and analysis, research gathering, day to day task automation).
  • Ability to work in an “AI-first” environment using modern AI tools to accelerate discovery through hardware development.
  • Doctorate in Physics, Engineering, or related field OR Master's Degree in Physics, Engineering, or related field AND proven experience in industry or in a research and development environment OR Bachelor's Degree in Physics, Engineering, or related field AND demonstrated experience in industry or in a research and development environment OR equivalent experience.
  • Leveraging artificial intelligence tools and techniques to enhance data tracking, analysis, and visualization.
  • Strong communication skills and a track record of translating technical data into actionable recommendations for multi-disciplinary teams.
Job Responsibility
Job Responsibility
  • Collaborating across technical pillars to understand the requirements and operational characteristics of different subsystems within the quantum computer
  • Designing, implementing, and refining data pipelines for historical monitoring of key subsystem performance metrics
  • Conducting advanced statistical analysis and data mining to identify performance trends, top risks, and areas for improvement across subsystems
  • Documenting and communicating the results of performance tracking and analysis to stakeholders, providing actionable insights to inform system strategy and risk mitigation
  • Partnering with software engineering teams to develop, maintain, and enhance code infrastructure supporting data analysis and reporting
  • Proactively identifying new metrics and risk indicators to be monitored, and collaborating to stand up new data pipelines and dashboards for visibility into subsystem health and performance
  • Supporting cross-functional teams in root-cause analysis and troubleshooting by providing deep dives into subsystem data and performance history
  • Fulltime
Read More
Arrow Right

Principal Quantum Systems Digital Design Engineer

Microsoft is the world’s center of expertise on topological quantum computing. W...
Location
Location
United States , Redmond
Salary
Salary:
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Doctorate in Physics, Electrical/Computer Engineering, or related field AND 3+ years experience in industry or in a research and development environment
  • OR Master's Degree in Physics, Electrical/Computer Engineering, or related field AND 4+ years experience in industry or in a research and development environment
  • OR Bachelor's Degree in Physics, Electrical/Computer Engineering, or related field AND 6+ years experience in industry or in a research and development environment
  • OR equivalent experience
  • 6+ years programming experience in related programming languages
  • 6+ years experience in a collaborative environment
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
  • Ability to work in an "AI first" environment using modern AI tools to accelerate discovery through hardware development
  • Familiarity with designing and building AI agents/copilots that assist with experiment setup, log triage, measurement report generation, protocol templating, and knowledge retrieval
Job Responsibility
Job Responsibility
  • Design & implement RTL for streaming, low‑latency pipelines (e.g., readout classifiers, syndrome aggregation, and QEC decoder kernels) in Verilog/SystemVerilog, including resource/performance trade‑offs and power/thermal considerations
  • Design and implement high‑speed interconnects between subsystems (AXI4/AXI‑Stream, JESD204(B/C), Aurora, Ethernet/UDP, PCIe), including SERDES configuration, link bring‑up, and throughput/latency tuning
  • Design robust clocking & CDC strategies (MMCM/PLL trees, jitter budgets, multi‑domain timing closure, async FIFOs, metastability analysis) for deterministic performance
  • Co‑design hardware/firmware/software boundaries (register maps, DMA, interrupt models, driver interfaces) with control/readout software and instrument teams
  • contribute to system‑level design reviews
  • Verification and validation: develop simulation and constrained‑random tests (SV/UVM or equivalent), build on‑board diagnostics (ILA/ChipScope), and execute lab bring‑up with scopes, VNAs, LA/SC, and RF instruments
  • Tool flow & CI: own synthesis/implementation (Vivado/Vitis or Quartus/Prime), timing sign‑off, and reproducible, scripted builds (Tcl/Python) integrated with Git/Azure DevOps CI/CD
  • Quality & documentation: produce clear design docs, interface specs, and bring‑up guides
  • participate in rigorous code/design reviews and post‑silicon/post‑fabrication retros
  • Fulltime
Read More
Arrow Right

Research Engineer in Chip-Based Quantum Key distribution

Toshiba Europe Ltd has been at the forefront of quantum technology research, par...
Location
Location
United Kingdom , Cambridge
Salary
Salary:
Not provided
toshiba.eu Logo
Toshiba EMEA
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Degree in Physics, Electronic Engineering, Photonics, or a closely related field
  • Proven ability to operate complex optical/electronic experimental setups
  • Experience with statistical analysis, yield and reliability assessment, system integration, troubleshooting, and data analysis
  • Excellent written and verbal communication skills
  • Enthusiasm for learning new skills and working in a multidisciplinary team
Job Responsibility
Job Responsibility
  • Develop and refine scalable PIC technologies tailored for QKD
  • Characterize QKD PIC performance and perform yield analysis and optimization
  • Conduct environmental and reliability and ageing assessments
  • Devise and implement innovative approaches to QKD PIC packaging and system-level integration
  • Collaborate with multi-disciplinary teams to integrate the QKD PIC devices into platforms compatible with commercial requirements
  • Interface QKD PIC modules with high‑speed RF electronics, FPGA systems, and digital processing pipelines
  • Draft device specifications and develop and maintain documentation for optical, electrical and mechanical subsystems
  • Analyse experimental data and communicate key findings
  • Contribute to establish a robust supply chain for the sustainable development of PIC‑based QKD devices
  • Collaborate with industrial partners in the UK and Japan
What we offer
What we offer
  • Generous Benefits Package
Read More
Arrow Right