Senior Software Engineer

At Riverlane, our mission is to make it possible for anyone to write and run fault-tolerant programs on a quantum computer. A key part of that mission is Deltakit, our open-source, user-facing platform for building, simulating and interpreting QEC experiments. As a Senior Software Engineer, you will own and lead the development of Deltakit, shaping its direction and ensuring it evolves to meet the needs of a growing and highly technical user community.

This role sits at the intersection of research and engineering. You will take cutting-edge ideas from the forefront of QEC and turn them into robust, intuitive software that researchers can rely on. Day to day, this means driving the design and delivery of new features, improving performance and usability, and ensuring the platform scales as adoption grows. You ll play a key role in planning and prioritising the development roadmap, aligning technical delivery with research milestones, user needs, and broader organisational goals, as well as defining technical direction, making architectural decisions, and setting the standard for high-quality, well-engineered code.

You will also be closely connected to the people who use what we build. By engaging with researchers, engineers and the wider QEC community, you ll help support adoption of Deltakit, understand how it s being used in practice, and translate real-world feedback into meaningful improvements. You ll also play a key role in planning and prioritising the development roadmap, aligning technical delivery with research milestones, user needs, and broader organisational goals. Through this, you ll ensure the software not only reflects the latest research, but is accessible, reliable and impactful.

Riverlane operates at the forefront of a fast-moving and evolving field. You ll work as part of a collaborative, multidisciplinary team where ideas are shared openly and learning is continuous. As priorities shift and the technology develops, you ll help guide the platform forward through both technical leadership and thoughtful planning, bringing clarity, direction and momentum to complex challenges, and playing a central role in advancing Riverlane s leadership in QEC software.

What you will do

• 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

What we need

• 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

Even better if you have

• Experience with a strongly typed language (e.g. C++ or Rust)