Principal Engineer / Lead Full Stack EngineerRemote - Hybrid. UK Only. Typescript NodeJS Micro services SaaS PlatformWe''re partnering with a high-growth UK SaaS business that is investing heavily in its engineering function and looking for an experienced Principal or Lead Engineer to help shape the future of its customer-facing platforms.This is a hands-on technical leadership role where you''ll work closely with Product, Engineering and Business stakeholders to design, build and scale modern software solutions used by thousands of customers.Working within a mature engineering environment, you''ll help drive architectural decisions, influence engineering standards, mentor developers and lead the delivery of high-quality software across a modern cloud-based platform.Tech StackTypeScriptjs and MicroservicesjsRedisSQL Server and SingleStoreAWSCI/CD and DevSecOpsWhat You''ll Be DoingLeading solution design, architecture and technical decision-makingCollaborating with Product teams to shape requirements and delivery plansBuilding and deploying production software in a fast-paced environmentDriving engineering best practices, code quality and maintainabilitySupporting systems in production and improving platform performanceActing as a senior technical leader within an AI-enabled engineering environmentWhat We''re Looking ForStrong commercial experience with TypeScript and modern JavaScript developmentPrevious experience in a Staff Engineer, Principal Engineer, Lead Engineer or Sen