Senior Software Engineer - AI SaaS Platform London (Hybrid - 2 days onsite)£90,000 - £110,000 + bonus + benefitsA high-growth B2B generative AI scale-up based in central London is looking for a Senior Software Engineer to help build the next generation of its AI-powered SaaS platform.Working within a fast-moving product engineering team, you will play a key role in designing and delivering new features that enhance how customers interact with AI-driven software. This is a product-led environment where engineers collaborate closely with product managers and designers to ship high-impact features and continuously improve the platform.This role would suit an experienced engineer who enjoys building scalable systems, working across the full stack, and contributing to a product used by real customers.Key ResponsibilitiesDesign and deliver scalable features within a modern SaaS platformBuild reliable backend services and customer-facing functionalityWork closely with Product Managers and Designers to refine requirements and deliver solutionsContribute to system design, architecture discussions and engineering best practicesSupport the reliability and scalability of live production systemsRequired ExperienceStrong TypeScript / Node.js development experienceExperience building full-stack applications (React / Next.js)Experience delivering cloud-based products in AWS, GCP or AzureInfrastructure knowledge such as Terraform, Docker, Kubernetes or CI/CD pipelinesExperience working in sta