Join Infleqtion as a Research Software Engineer to build and maintain software across the full quantum control stack. You will enable high-performance operation of our quantum computers and quantum sensors by developing solutions for hardware integration, real-time control, waveform generation, calibration automation, and scalable data pipelines. You will work directly at the intersection of physics and production software, translating experimental requirements into robust, deterministic, and extensible control infrastructure.
What You'll Do
- Design, develop, and deploy reliable, maintainable, scalable, and fault-tolerant backend services and frameworks that control and calibrate our quantum hardware.
- Collaborate with interdisciplinary teams, including scientists, opto-mechanical engineers, and electrical engineers, to solve complex problems and deliver high-quality software solutions.
- Participate in code and design reviews, upholding engineering best practices and promoting a culture of quality and collaboration.
- Support and debug all layers of the control stack from real-time embedded kernels to distributed and cloud-based services.
- Advocate for and implement innovative software development methodologies and tools to improve team efficiency and product quality.
What We're Looking For
- A Bachelor's degree in Engineering, Applied Mathematics, Physics or a related field.
- A Master's degree in one of these fields or 2 years of work experience in a scientific domain.
- Experience with modern Python development.
- Good verbal and written communication skills, able to effectively share information with technical and non-technical staff.
- Good collaboration skills, able to work in a team environment where engagement and participation are an expected part of successful job performance.
- A desire to constantly improve and learn inside and outside of your expertise.
Nice to Have
- Experience in other languages, such as Rust or C++.
- Domain-specific experience in statistics, machine learning, or AMO physics.
- Experience with Linux and virtualization technologies like Docker or Kubernetes.
- Experience with Numpy, Scipy, and Pytorch.
- Experience with image analysis, with an emphasis on real-time object detection.
- Experience with databases (relational and non-relational) including but not limited to timeseries data, SQL, and ETL processes.
- Experience creating and maintaining CI/CD pipelines, and Python package creation with C or Rust extensions.
- Experience developing basic GUIs and/or web front-end applications.
Technical Stack
- Languages: Python, Rust, C++
- Infrastructure: Linux, Docker, Kubernetes
- Libraries/Frameworks: Numpy, Scipy, Pytorch
- Data: SQL
Team & Environment
You will collaborate with interdisciplinary teams, including scientists, opto-mechanical engineers, and electrical engineers.
Benefits & Compensation
- Competitive salary
- Incentive Stock Option Plan
- Generous company 10% pension contribution regardless of employee contribution
- Unlimited PTO
- BUPA healthcare after probation period
- Cycle to work and Technology scheme
Work Mode
This role operates on a hybrid basis, working from our Kidlington and Harwell offices.
We are proud to be an Equal Employment Opportunity Employer.





