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Systems Integration Engineer - Sensing

Infleqtion - Kidlington, Oxfordshire, United Kingdom - Hybrid - posted 2026-10-08

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Infleqtion is a global quantum technology company developing quantum computers, sensors, and networks to solve complex problems. The company is expanding its UK engineering team and seeking a Systems Integration Engineer to develop hardware, software, and firmware interfaces for next-generation Positioning, Navigation, and Timing (PNT) systems based on optical and atomic physics. In this role, you will integrate electronics devices, instruments, and subsystems into complex systems comprising RF, analogue, digital, optical, and mechanical elements. You will translate system-level requirements into practical integration architectures, develop system interconnects including cable assemblies, harnesses, and RF connections, and perform system bring-up, commissioning, troubleshooting, and performance optimization. Key responsibilities include identifying and resolving integration issues related to grounding, EMI/EMC, signal integrity, timing, and communications; developing and maintaining system diagrams, interface control documentation, and wiring diagrams; defining and executing integration, verification, and validation test plans; and using laboratory test equipment to diagnose system-level performance problems. You will support installation, deployment, commissioning, and maintenance of systems in laboratory and operational environments, work closely with electronics, software, FPGA, mechanical, optical, physics, and systems engineering teams, and contribute to system risk management and reliability improvement activities. The role involves up to 10% travel, including international travel. Infleqtion offers flexible working with the option to work from home up to 2 days per week. REQUIREMENTS: - Bachelor's degree or substantive equivalent experience in electrical engineering, systems engineering, electronic engineering, physics, mechatronics, or related technical discipline - Several years of relevant and progressive experience integrating complex multidisciplinary hardware systems - Strong practical understanding of analogue, digital, RF, power, grounding, shielding, and signal integrity principles - Experience integrating PCBs, embedded systems, instruments, sensors, actuators, and third-party equipment into larger systems - Experience with system bring-up, commissioning, troubleshooting, and fault isolation - Experience developing and interpreting system block diagrams, wiring diagrams, interface specifications, and technical documentation - Experience with electrical interfaces and communications protocols (Ethernet, serial, SPI, I2C, CAN, USB, or similar) - Experience designing or specifying cabling, connectors, harnesses, grounding, shielding, and power distribution - Experience with testing, verification, and validation of complex systems and subsystems - Experience using test and measurement equipment (oscilloscopes, spectrum analysers, network analysers, signal generators, power meters, digital multimeters) - Ability to diagnose issues across multiple engineering disciplines - Ability to work effectively within highly collaborative, multidisciplinary engineering teams DESIRABLE SKILLS: - Experience integrating RF systems (amplifiers, mixers, oscillators, filters, attenuators, frequency conversion) - Experience integrating optical or electro-optical systems (lasers, photodetectors, modulators, optical control hardware) - Experience with precision analogue electronics, low-noise systems, and high-resolution data acquisition - Experience with FPGA-based and embedded control systems - Experience integrating laboratory automation and instrumentation (SCPI, serial communications, Ethernet, APIs) - Familiarity with EMI/EMC design and troubleshooting - Experience designing systems for long-term stability under varying environmental conditions - Experience with rack-mounted systems, equipment enclosures, thermal management, and power distribution - Experience commissioning complex scientific, industrial, or quantum technology systems - Experience solving complex multidisciplinary problems in highly technical and scientific environments

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