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Backend Software Engineer

Quantinuum

Quantinuum

Software Engineering
Cambridge, UK
Posted on Aug 19, 2025
Quantinuum is seeking to hire a backend engineer for our Cambridge-based cloud platform, Quantinuum Nexus. Our team aims to support the effort of quantum researchers at every stage of an experiment, making working on quantum computers as easy as sending an email.
As an engineer in the Nexus team, you will contribute code to the various services that make up Quantinuum Nexus. Working as part of a small team you will help to define, estimate and contribute to technical tasks that all feed into one feature. You will work on a range of services, written in both Python and Rust, built using modern web development tools that will provide a range of challenges and learning opportunities.
It is less important to have experience with our exact stack than it is to be able to demonstrate enthusiasm and a willingness to learn, we’re facing new challenges every day and are looking for a candidate that can keep up. We aim to provide opportunities for engineers to collaborate together, sharing experience and skills as well as offering some protected time for working on your own skills. Over time the role can grow to fit the engineer, providing more opportunities to work with other teams or customers, lead technical projects or be more involved in planning and organisation.

Must have:

  • Experience of working with Python or comparable high level programming languages
  • Enthusiasm and willingness to learn
  • Willingness to commute or relocate to Cambridge
  • Degree level in a relevant subject to the role

It will be beneficial to have experience with

  • Python web frameworks like FastAPI or Django
  • Rust, and specifically Diesel
  • PostgreSQL
  • Docker
  • Kubernetes
  • AWS and tooling
What is in it for you?
Working alongside a highly talented team, with leading names in the quantum computing industry. We offer a highly competitive package, equity, 28 days of paid holiday (in addition to public holidays), a workplace pension, a positive approach to flexible working and enhanced parental and adoption benefits.
About Us:
Quantinuum is the world’s largest integrated quantum company, driving breakthroughs in materials discovery, cybersecurity, and next-generation quantum AI. With a team of more than 600 employees, including more than 420 of them being scientists and engineers, we are leading the worldwide quantum computing revolution.
By uniting best-in-class software with high-fidelity hardware, our integrated full-stack approach is accelerating the path to practical quantum computing and scaling its impact across multiple industries.
As we celebrate the International Year of Quantum, there has never been a more exciting time to be part of this rapidly evolving field. By joining Quantinuum, you’ll be at the forefront of this transformative revolution, shaping the future of quantum computing, pushing the limits of technology, and making the impossible possible.
Visit our news pages to learn more about Quantinuum and our scientific breakthroughs and achievements: https://www.quantinuum.com/news
Please note that employment with us is subject to successfully passing our pre-employment screening checks. We are an inclusive equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status.