Job Title: Full Stack Tech Lead Location: Central London Salary/Rate: £650 Inside IR35Job Type: ContractRole OverviewWe are looking for a highly experienced and technically profound Full Stack Tech Lead to drive the architecture and execution of our core technology stack. You will serve as the technical authority for the team, building and evolving a large-scale platform built on C#/.NET and Next.js, leveraging the full capabilities of Google Cloud Platform (GCP).This role requires a blend of hands-on coding (approximately 60-75%), strategic architectural thinking, and dedicated mentorship. We are looking for a leader who can operate confidently in a high-stakes environment and share ownership of complex technical decisions alongside our existing leadership team to ensure we deliver robust, scalable, and maintainable solutions.Key ResponsibilitiesArchitectural Leadership: Lead the design and implementation of C#/.NET Back End services, APIs, and core business logic. Define and enforce the technical vision and design patterns across the full stack.System Integration: Oversee the seamless integration with external financial, risk, and payment services, ensuring high reliability, security, and data integrity.Collaborative Decision Making: Partner with existing technical leadership to share ownership of complex architectural decisions, balancing innovation with platform stability.Team Leadership andamp; Mentorship: Lead, coach, and motivate a team of developers, conducting regula