Lead Backend/Platform Engineer - NestJS/TypeScript Leading Technology AI Brand SaaS - Platform based Technology Services London/City £70-105k salary + equity package Our client a global technology leader is currently looking for a Senior/Lead Backend Engineer to work with the dev team to guide the provision of Software Development for an exciting new AI product. Key Responsibilities:- Architect and build scalable data pipelines and infrastructure Design and maintain data ingestion, transformation, and storage architectures for operational and AI workloads. Develop and manage batch and Real Time data pipelines. Build and optimize systems for vector search, retrieval, and ML data pipelines. Ensure data reliability, security, and governance across the platform. Collaborate with AI and Back End engineering teams to support training, inference, and product features. Implement monitoring, observability, and data quality frameworks. Requirements:- NestJS and TypeScript - core stack, no exceptions Microservices and event-driven systems - non-negotiable Strong system design with clear trade-offs Production AI experience - agentic preferred Full-stack awareness, Back End dominant Led people, not just projects Entrepreneurial mindset - startup experience preferred AI active in development workflow ..... full job details .....