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- Tasks: Design and build scalable backend services for cutting-edge quantum technologies.
- Company: Join Infleqtion, a global leader in quantum technology innovation.
- Benefits: Enjoy competitive salary, unlimited PTO, and a generous pension contribution.
- Why this job: Make a real impact in the quantum industry while working with brilliant minds.
- Qualifications: 3+ years in software engineering with strong Python skills and cloud experience.
- Other info: Flexible work policy and a culture that values diversity and inclusion.
The predicted salary is between 36000 - 60000 ÂŁ per year.
ABOUT THE COMPANY
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. Our mission is to commercialise atom-based quantum products that provide orders of magnitude improvements in performance and computing applications.
LOCATION
Infleqtion has offices in the USA, United Kingdom and Australia. This is a full‑time position in our Kidlington and Harwell offices. Our flexible working policy enables all full‑time employees to work up to 2 days a week from home as work permits.
POSITION SUMMARY
Infleqtion is seeking a Senior Cloud Backend Software Engineer to design and build scalable backend services that power both internal platform infrastructure and externally facing systems for our quantum technologies. This role focuses on developing cloud‑native microservice architectures, distributed APIs, and reliable backend systems that support experiment orchestration, data pipelines, device control workflows, and internal developer platforms. You will build and operate services that form the backbone of our quantum software platform, enabling scientists, engineers, and external users to interact with quantum hardware and experimentation workflows through robust, scalable infrastructure. The ideal candidate is comfortable building API‑driven services, asynchronous systems, and scalable data infrastructure deployed in containerised and orchestrated cloud environments.
JOB RESPONSIBILITIES
- Design, develop, and operate cloud‑native backend services and microservice architectures supporting both internal engineering platforms and externally accessible APIs.
- Build Python‑based backend systems using modern frameworks such as FastAPI and SQLAlchemy to implement scalable, maintainable services.
- Architect and implement distributed systems that support experiment orchestration, telemetry collection, data ingestion, and device interaction workflows.
- Design backend systems with strong focus on reliability, scalability, observability, and fault tolerance, including monitoring, logging, tracing, and graceful degradation.
- Deploy and operate services using Docker containers, local development environments with Docker Compose, and production orchestration using Kubernetes.
- Collaborate with interdisciplinary teams including physicists, hardware engineers, and research scientists to translate experimental workflows into scalable software systems.
- Mentor junior engineers and promote best practices in backend architecture, distributed systems design, reliability engineering, and software development.
- Lead architecture discussions, design reviews, and code reviews to maintain high engineering standards and system maintainability.
- Contribute to platform reliability and operational excellence, diagnosing production issues, improving system performance, and strengthening infrastructure resilience.
Qualifications:
- Bachelor’s degree in Computer Science, Engineering, Applied Mathematics, Physics, or related field with 3+ years of professional software engineering experience.
- Strong experience developing backend systems in Python, particularly using modern frameworks such as FastAPI, SQLAlchemy, or similar tools.
- Experience designing and implementing and deploying distributed systems or microservice architectures, using tools including Docker, Docker Compose & Kubernetes.
- Experience designing systems for reliability, scalability, and operational robustness and using CI/CD pipelines, automated testing infrastructure, and deployment automation.
- Strong understanding of software engineering best practices, including testing, version control, debugging, observability, documentation, and maintainability.
- Strong communication and collaboration skills, with the ability to work effectively across interdisciplinary teams.
Desirable Skills or Knowledge
- Experience building distributed systems in cloud environments (AWS, GCP, Azure, or similar).
- Experience with message queues and event‑driven architectures (e.g., Kafka, RabbitMQ, NATS, or similar).
- Experience with database systems and data infrastructure, including relational databases, time‑series databases, and large‑scale data pipelines.
- Experience building Python packages with native extensions (Rust/C/C++).
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.
In addition to your base compensation, we offer a generous Total Rewards program which includes:
- 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
Senior Cloud Backend Software Engineer in Kidlington employer: Infleqtion
Contact Detail:
Infleqtion Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Cloud Backend Software Engineer in Kidlington
✨Tip Number 1
Network like a pro! Reach out to folks in the quantum tech space, especially those at Infleqtion. A friendly chat can open doors and give you insights that a job description just can't.
✨Tip Number 2
Show off your skills! If you've got a GitHub or portfolio, make sure it's up to date. Share projects that highlight your experience with Python, microservices, and cloud environments. Let your work speak for itself!
✨Tip Number 3
Prepare for the interview by diving deep into quantum technologies. Understand how your backend skills can contribute to their mission. The more you know, the better you'll connect your experience to their needs.
✨Tip Number 4
Don't forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take that extra step to engage with us directly.
We think you need these skills to ace Senior Cloud Backend Software Engineer in Kidlington
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the Senior Cloud Backend Software Engineer role. Highlight your experience with Python, microservices, and cloud environments, as these are key to what we’re looking for at Infleqtion.
Showcase Your Projects: Don’t just list your skills; show us what you can do! Include links to your GitHub or any relevant projects that demonstrate your backend development expertise and your ability to work with distributed systems.
Be Clear and Concise: When writing your application, keep it straightforward. Use clear language and avoid jargon where possible. We want to see your personality shine through, so let us know why you’re passionate about quantum technology!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at Infleqtion
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially Python frameworks like FastAPI and SQLAlchemy. Brush up on your knowledge of Docker, Kubernetes, and distributed systems, as these will likely come up during technical discussions.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous roles, particularly around building scalable backend services or working with cloud-native architectures. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight your contributions.
✨Collaborate and Communicate
Since this role involves working with interdisciplinary teams, be ready to demonstrate your collaboration skills. Share examples of how you've effectively communicated complex technical concepts to non-technical team members or collaborated with physicists and engineers in past projects.
✨Ask Insightful Questions
Prepare thoughtful questions about Infleqtion’s projects, team dynamics, and future goals. This shows your genuine interest in the company and helps you assess if it’s the right fit for you. Consider asking about their approach to reliability engineering or how they handle production issues.