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Infleqtion is a global quantum technology company developing quantum computers, sensors, and networks to solve complex real-world problems. The company operates offices across Austin, Boulder/Louisville, Madison, Chicago, Oxford, and Melbourne.
You will join the Oxford, UK team as a Mixed Signal Electronics Engineer, contributing to the design, verification, and implementation of electronic systems for Infleqtion's quantum products. This is a hybrid, full-time role working across digital, mixed-signal, and analogue electronics spanning DC to RF frequencies.
Key responsibilities include:
- Translating product requirements into end-to-end signal chain architecture
- Executing modelling, simulation, and analytical calculations to meet product performance specifications
- Digital and mixed-signal circuit design and signal processing using DACs, ADCs, and FPGAs
- PCB design and layout for integration with mechanical, optical, and other subsystems
- RF shielding, cabling, and routing design for isolation
- Generating manufacturing-ready PCB files
- Designing and executing comprehensive test plans
- Identifying and engaging key suppliers
- Supporting risk management, reliability analysis, and continuous improvement initiatives
You will work in a highly collaborative, cross-functional environment bringing state-of-the-art quantum technologies from laboratory to real-world deployment.
REQUIREMENTS:
- Bachelor's degree in electrical engineering, electrical and computer engineering, electro-optical engineering, RF engineering, or embedded systems engineering (or substantive equivalent experience)
- Excellent understanding of electronics engineering principles, theory, and design techniques
- Several years of relevant and progressive experience in a similar role
- Experience with full RF development cycle: conceptualization, design, manufacturing, validation, and deployment
- PCB design experience for mixed-signal applications
- Proficiency with PCB design software (e.g., Altium)
- Experience with modelling and simulation tools (e.g., SPICE, HFSS)
- Testing, verification, and validation experience for products and subsystems
- Hands-on experience with test and measurement equipment (network analyzer, spectrum analyzer, etc.)
- Ability to work effectively in highly collaborative, cross-functional teams
DESIRABLE:
- Digital signal processing (DSP) experience
- High-speed photodetection systems knowledge
- Low phase-noise oscillators and frequency conversion expertise
- Design for long-term stability in varying environmental conditions
- Experience solving complex technical and scientific challenges
