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Mixed Signals Electronics Engineer - Compute
Posted by Infleqtion on 5 October 2026, 5 days ago. Still on their Workable board when we checked 1 h ago.
Read out of the posting
LevelNot stated
Experience askedNot stated
EmploymentNot stated
LocationOxford, England, United Kingdom
RemoteNot stated
Visa sponsorshipNot stated
SalaryNot published, and most postings do not
Posted2026-10-05
Found viaworkable, direct from their system
We saw it 5 days after it went up.
The posting, as the company wrote it
Employment: Full-time
Experience: Mid-Senior level
Education: Bachelor's Degree
Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading edge commercial products, Infleqtion enables “quantum everywhere” through our ecosystem of devices and platforms. We are recruiting for a Mixed Signal Electronics Engineer .
LOCATION
Infleqtion has 6 office locations, operating out of Austin, TX; Boulder/Louisville, CO; Madison, WI; Chicago, IL; Oxford, UK; and Melbourne, AU. This position is a full-time, hybrid position which will be located in our Oxford, United Kingdom office.
JOB SUMMARY
Infleqtion UK is looking for a mixed signal electronics engineer with a passion for working with a multi-disciplinary team to bring state-of-the art quantum technologies outside the laboratory and into the real-world. You will use your skills to contribute to the design, verification, and implementation of electronic systems and subsystems for Infleqtion’s quantum products. You will have strong skills and relevant experience working with digital, mixed-signal, and analogue electronics, ranging from DC to RF frequencies.
JOB RESPONSIBILITIES
The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned at any time with or without notice.
Translating product requirements into end-to-end signal chain architecture
Execution of modelling, simulation, and analytical calculations to design systems required to meet product performance
Digital and mixed signal circuit design and signal processing using components such as DAC/ADC, FPGA's.
PCB design and layout for integration into larger mechanical, optical, and other subsystems
Shielding, cabling, and routing design for RF isolation
Generation of files suitable for PCB manufacture
Design and execution of test plans
Identifying and engaging key suppliers
Supporting development of risk management plans and risk resolution, and supporting reliability analysis and continuous improvement.
Requirements
Bachelor’s degree or substantive experience, with a focus in electrical engineering, electrical and computer engineering, electro-optical engineering, RF engineering, or embedded systems engineering
An excellent understanding of electronics engineering principles, theory and design techniques
Several years of relevant and progressive experience in a similar role
Experience of RF development cycle from conceptualisation, design, manufacturing and validation through to deployment.
Experience with designing PCBs for mixed signals applications.
Experience with PCB design software (e.g Altium)
Experience with modelling and simulation tools (e.g. SPICE, HFSS)
Experience with testing, verification, and validation of products and subsystems
Experience using test and measurement equipment (network analyser, spectrum analyser etc)
Ability to work comfortably in a highly collaborative, cross-functional teams.
Desirable Skills and Knowledge
Experience with digital signal processing (DSP)
High-speed photodetection systems
Low phase-noise oscillators and frequency conversion
Design for long term stability in varying environmental conditions
Experience solving complex problems and challenges in a highly technical and scientific environment
TRAVEL
Up to 10% travel, including international travel, may be required
WORKING CONDITIONS & PHYSICAL REQUIREMENTS
Work will normally be performed in an office and laboratory environment. Able to efficiently use automated office equipment such as laptops, copiers, and printers; able to effectively engage in communications (via phone, computer, or in-person). Will involve sitting, standing, walking, lifting, and carrying up to 10 kg.
EQUAL OPPORTUNITY
Regardless of your interest in the quantum industry, you can take pride in the fact that Infleqtion is building an ecosystem of quantum technologies and commercial products, driving the industry towards the future. Studies reveal that while men apply for jobs when they meet an average of 60% of the requirements, women and other groups tend to apply only when they meet all the criteria. If you believe you have the potential but don't meet every single point in our job advertisement, please don't hesitate to contact us! We would love to chat with you and see how you could bring great value to our team. Our goal is to find exceptional individuals who can enrich our team culture, actively contribute, and have a genuine passion for their work. Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin colour, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.
Benefits
In addition to your base compensation, we offer a generous Total Rewards program which includes:
Competitive salary
Unlimited PTO
Generous company pension contribution
Cycle to work and Technology schemes
Incentive Stock Option Plan
Also open at Infleqtion
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