JOB TITLE: Principal/Lead Java Software Engineer (Hands-On) LOCATION: London - Hybrid - 3x days a week onsite DURATION: 6 - 12 Months Rolling RATE: £400 per day, all inclusive THIS PROJECT IS INSIDE IR35 We are looking for a highly technical, hands-on Principal-level Java Engineer to take ownership of the strategic technical direction for a critical automation platform. This is not a pure management role - you will be in the code daily, leading Scrum teams, refactoring Legacy systems, and acting as the ultimate technical gatekeeper for design and code quality. If you are already using AI-powered coding tools daily to accelerate delivery and have deep experience with modern version control (including JJ), this role will play to all your strengths. Key Responsibilities Own the overall technical roadmap and strategic direction for the platform. Design end-to-end solutions (Back End to Front End) using cutting-edge technologies and industry best practices. Get hands-on daily - refactoring Legacy applications, shipping new features, and bolstering existing software. Lead the Scrum process - build and prioritise the development backlog to deliver high-impact automation solutions. Act as the principal sign-off authority for all technology choices, design documents, and code reviews. Mentor and guide multiple Scrum teams, acting as the go-to technical expert for the entire department. Essential Skills andamp; Experience (Must-Haves) Extensive experience developing and deploying ..... full job details .....