Lead Software Engineer (TypeScript / React Native) - Fully Remote Our client, a growing company based in London is seeking an experienced Lead Software Engineer to take ownership of the technology stack and guide the engineering team through this next phase of growth. This is a hands-on leadership role, combining technical delivery with strategic oversight.As Lead, you will act as a "player-coach": shipping critical code yourself while mentoring engineers, driving technical strategy, and ensuring the platform scales with rapid international growth. You will work closely with the founders, translating business goals into a clear technical roadmap and high-quality execution. What You''ll Be Working On Mobile Apps: Core customer apps built with TypeScript, React Native, Expo.Backend: TypeScript, GCP/Firebase Cloud Functions, GCP Pub/Sub, Postgres, Prisma.Web Apps: Customer-facing portals for sign-up and account management (TypeScript, React, Vercel).Internal ERP: Mission control for stock, customers, and operations (TypeScript, Next.js, Vercel).A high-velocity release culture, deploying multiple times per day to tens of thousands of users. Key Responsibilities Lead end-to-end development and delivery of core features across mobile, backend, and internal tooling.Shape the technical roadmap and make high-impact architectural decisions in partnership with the founders.Own the quality, reliability, and performance of applications in production.Mentor engineers through code reviews,