Contract Software Engineer / Lead Developer - TypeScript Expert The Role We're looking for an exceptional Software Engineer / Back-End Developer - a true "super dev" - with proven TypeScript expertise and a deep understanding of software engineering patterns. This is a high-level contract role, suitable for someone operating at Principal Engineer or Lead Engineer level. You'll join a small, highly skilled team building a new platform driven by innovative algorithms, clever data structures, and pattern-based architecture. Working closely with the Head of Architecture, you'll take abstract concepts and requirements, distil them, and deliver high-quality, elegant solutions. This is a role for someone who thrives on independence, can work from a high-level brief, and produces results quickly and to the highest standards. Location: Hybrid - 2 days per week in Yorkshire, possibly less remainder remote Rate: circa £680 per day (inside IR35) Duration: 6 months initially Start: Beginning of September Key Responsibilities Lead the back-end development of a new platform using TypeScript. Apply advanced software engineering patterns and design principles. Translate abstract concepts into working, production-ready solutions. Employ Test-Driven Development (TDD) and SOLID principles. Build robust, scalable algorithms and efficient data structures. Collaborate with other engineers, mentoring and sharing...