Principal Software Developer – C++ and Rust - is required by highly successful and fast growing technology consultancy.They build data, AI and software solutions for clients in a broad range of industries, working on demanding problems in challenging environments. The role They are looking for a Principal Software Developer to lead delivery on demanding software projects. This role is focused on C++ and Rust development. This is a hands-on role for an experienced engineer who wants to stay close to the code. You'll lead a team of 6 to 12 engineers, own delivery end to end, and spend a meaningful share of your time writing code, reviewing designs, and unblocking the team. It's a delivery role, not a strategy role. You'll shape how we build things and how the team grows around you. Responsibilities * Lead the delivery of complex software projects * Work alongside other leads to set direction for the defence function * Stay hands-on: set technical direction, design software and write code, leaning in where needed * Mentor engineers across experience levels * Plan and estimate delivery, manage technical debt, and make pragmatic trade-offs between speed, quality and long-term maintainability * Work directly with clients to shape requirements, manage expectations and build trust * Run code and design reviews, set the bar for quality, and hold the team to it * Embed strong testing practi...