Senior Full Stack Engineer - React/TS/Node - £80-100K

Senior Full Stack Engineer – React/TypeScript/AWS – £80–100kWe are partnering with a well-funded startup that is building an innovative platform empowering private investors to manage their portfolios.As an AI-native platform on an exciting growth journey, they are seeking Full Stack Engineers to help shape their architecture as they scale.The RoleYou’ll take ownership across the full stack - from designing APIs and data models to crafting seamless, high-performing user interfaces. Working closely with product and design teams, you’ll help bring to life tools that make investing smarter, more transparent, and more sustainable.What you’ll bring5+ years of experience building production web applicationsSolid experience with React, TypeScript, and Node.jsFamiliarity with Next.js and GraphQLPrevious startup experienceA passion for clean code and intuitive product designInterest in fintech'sNice to HavesComfortable working with tools like Postgres, Prisma, GraphQL, or Next.jsHands-on experience with AI or agent frameworks (such as LangChain or LangGraph)Experience building something from scratch — whether a side project, startup, or open-source appTech StackFrontend: React, TypeScript, Next.jsBackend: Node.js, GraphQLDatabase & Cloud: Postgres, AWSWhy Join?Opportunity to contribute to a mission-driven product at the intersection of finance and sustainabilityWork within a collaborative, high-performing team where individual input is valuedPlay a key role in an early-stage company where contributions directly influence successCompetitive salary (£80–100k)Hybrid working model - 3 days per week in the London officeSenior Full Stack Engineer role - 3 days/week in London - £80-90k