Senior Software Engineer - Open Source

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 platfor