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.  

Location 

Infleqtion has offices in the USA, United Kingdom and Australia. This is a permanent, full-time position at our Kidlington, Oxford office. Our flexible working policy enables all full-time employees to work from home up to 2 days a week, if work permits. 

Position Summary

As part of our strategy for growth in the UK, we are expanding our Engineering Team and recruiting an Instrumentation Software Engineer. In this role you will develop software and firmware interfaces to control and monitor optical and atomic physics systems for the development of next generation atomic clocks and PNT systems. These systems offer orders of magnitude improvements in sensing and accuracy compared to current technologies.  

Job Responsibilities

Technical

• Develop embedded software and firmware for microcontroller-based systems using Rust and C or other appropriate languages.
• Develop low-level device drivers and interfaces for sensors, actuators, communication devices and peripheral hardware.
• Integrate microcontrollers, electronics and higher-level software into cohesive systems.
• Implement real-time control, monitoring, data acquisition and communication functions.
• Perform board bring-up and debug hardware–firmware integration issues using benchtop test equipment.
• Develop test software and automated tools in Python or similar high-level languages.
• Test and validate firmware, electronics and complete systems against defined requirements.
• Diagnose and resolve functional, timing, reliability and performance issues.
• Work with colleagues to define verification and validation plans and tests.
• Follow embedded software best practices to produce reliable, maintainable and reusable code.
• Produce clear design documentation, interface definitions, inline comments and user documentation.
• Support products throughout the development lifecycle, from initial prototypes through deployment and ongoing maintenance.

Personal and Team Responsibilities

• Collaborate effectively with team members to ensure technical objectives and deadlines are met.
• Work within multidisciplinary teams of software engineers, electronics engineers, physicists and technicians.
• Communicate technical risks, findings and design decisions clearly.
• Adapt to changing requirements and manage technical ambiguity effectively.
• Take ownership of assigned work from requirements definition through implementation, testing and delivery.

Requirements

• Core Requirements
• Bachelor’s degree or equivalent experience in electronics, engineering, computer science or a related discipline.
• Several years of relevant experience developing embedded software or firmware for microcontrollers.
• Proficiency in Rust, embedded C or C++.
• Experience developing low-level drivers and software for controlling hardware.
• Experience with microcontroller peripherals and communication interfaces such as SPI, I²C, UART, CAN, USB, Ethernet or ADC/DAC.
• Understanding of embedded-system concepts, including interrupts, memory constraints, timing requirements and concurrency.
• Experience integrating and debugging software and electronic hardware.
• Strong analytical and problem-solving skills, including systematic investigation of hardware and firmware issues.
• Experience using hardware-debugging tools such as oscilloscopes, logic analysers, multimeters and in-circuit debuggers.
• Proficiency with version-control workflows using Git.
• Good written and verbal communication skills, with the ability to communicate effectively with technical and non-technical colleagues.
• Demonstrated ability to work within collaborative, cross-functional and multidisciplinary teams.
  
• Desirable Requirements
• Experience with ARM microcontroller architectures.
• Experience developing applications using a real-time operating system such as FreeRTOS, Embassy etc.
• Experience implementing real-time feedback and control loops.
• Experience with bootloaders, firmware update mechanisms and production programming.
• Experience with low-power, safety-critical or high-reliability embedded-system design.
• Experience developing automated hardware-in-the-loop and system-level tests.
• Proficiency in Python for test automation, data analysis and development tooling.
• Experience with the full embedded-software development lifecycle, including requirements, architecture, implementation, code review, unit testing, integration testing, verification and release.
• Experience using automated documentation, static analysis, unit-testing and CI/CD tools.
• Experience with schematic review, PCB bring-up and diagnosing electronics faults.
• Experience transitioning embedded products from prototype development into manufacture and deployment.

Travel
Up to 10% travel, including international travel, may be required

Working conditions and 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. 

Notice to Recruitment Agencies
Infleqtion does not accept unsolicited CV's from agencies. Infleqtion is not responsible for any fees related to unsolicited CV's.

Benefits

In addition to your base compensation, we offer a generous Total Rewards program which includes:   

• Competitive salary 
• Bonus Program
• Incentive Stock Option Plan 
• Unlimited PTO subject to fair usage
• Generous company 10% pension contribution regardless of employee contribution  
• Cycle to work scheme 
• Tax efficient technology schemes  
• BUPA Private Healthcare Insurance once probationary period is successfully completed 
• Life assurance (4 x salary)