Senior Software Engineer - Open Source

Salary: £58,000 - 98,000 per year

Requirements:

• Strong technical foundation (e.g. computer science, mathematics, physics or similar)
• Experience designing and building high-quality scientific or technical software, primarily in Python
• Ability to translate complex, research-driven concepts into robust, scalable and user-friendly solutions
• Broad understanding of software systems (e.g. compilers, operating systems, computer architecture)
• Experience shipping software to users and maintaining high engineering standards
• Curiosity and a strong drive to learn and solve complex problems
• Collaborative mindset, with experience working across diverse teams
• Strong written and verbal communication skills
• Ability to shape technical direction, drive best practices, and support others through mentorship and leadership
• Interest in contributing to the quantum open-source ecosystem
• Experience with a strongly typed language (e.g. C++ or Rust)

Responsibilities:

• Lead significant parts of both the internal and external software stack for error-corrected quantum computing systems
• Turn internal tools into external and public ones
• Own the complete software cycle process: design, development, testing, builds, workflows, releases
• Mentor, guide and lead engineers in the team
• Lead collaboration with other engineering teams to integrate their software and hardware artifacts with Deltakit
• Engage with the community of users and researchers to identify needs and formulate adequate response
• Contribute actively to open-source projects and lead the Deltakit open-source community
• Organise and run workshops and tutorials for the community of users

Technologies:

• Hardware
• Support
• Python
• Rust
• C++
• LESS

More:

We are Riverlane, based in Cambridge, UK, and working full-time on a permanent basis. Our mission is to master quantum error correction (QEC) and unlock a new age of human progress. We are the world leader in QEC technology and have raised more than $125M in funding to accelerate our R&D. We partner with leading quantum hardware providers and government agencies to make fault-tolerant quantum computing a reality. As a Senior Software Engineer, you will own and lead Deltakit, our open-source platform for building, simulating and interpreting QEC experiments, shaping its direction for a growing and highly technical user community. We offer a comprehensive benefits package including an annual bonus plan, private medical insurance, life insurance, a contributory pension scheme, equity, 28 days annual leave plus bank holidays and enhanced family leave. We also provide a diverse and collaborative work environment and a learning culture with training, learning events and conference budgets.

last updated 36 week of 2026