Senior Full Stack Engineer

The Role Hybrid, 1 day per week in the London office. Plus Monday–Thursday onsite once every 7 weeks.We're hiring a Senior Full-Stack Engineer to help lead the development of our clients product platform across frontend and backend. You'll be responsible for building high-quality end-to-end product features while raising the bar for how we design, build and ship reliable software across the stack.This is a hands-on senior engineering role: you'll write production code, own key technical decisions, work closely with product and design, and mentor other engineers, without people management responsibilities.You'll: Build end-to-end product features, transforming how organisations adopt AI.Set standards for full-stack quality, testing, maintainability and technical design.Work closely with the CTO, Director of Engineering, product and design totranslate customer needs into robust, user-facing functionality.Make pragmatic technical decisions across frontend architecture, API design,data modelling and integrations.Improve the quality, usability, performance and reliability of the existing platformas usage grows.Own the full-stack role of key product areas, connecting AI-powered flows,learning content, authentication, core platform capabilities and user experience.Our Stack Frontend: Vue 3, TypeScriptBackend: Python, FastAPI, PostgresCloud: Azure as primary (plus a small number of services on GCP)Infra & DevOps: Terraform, GitHub Actions, OpenTelemetryYou don't need to know this exact stack, but you should be very comfortable working across a modern web application and able to make sound technical decisions across both frontend and backend systems in production.What We're Looking For We're looking for a genuine senior full-stack engineer who can take ownership, setdirection and still enjoy writing code.Must-have experience Strong track record as a senior engineer building production web platformsacross frontend and backend.Strong experience with at least one modern frontend framework (Vue, React orAngular).Deep experience building APIs, backend services and data-driven productfeatures in a modern language (Python preferred, but strong experience elsewhere is acceptable).Solid experience working with relational databases.Comfort being the go-to person for technical decisions and trade-offs across aproduct area.Comfort working closely with product and design to shape practical, usercentred solutions.Proven skills harnessing AI-native ways of working to ship quickly withoutsacrificing quality.Nice to have • Vue and TypeScript experience• Python + FastAPI experience• Experience with multi-tenant SaaS systems• Familiarity with cloud platforms (Azure, AWS or GCP)• Experience working in a startup or small product team