Senior Full Stack Engineer - React/TS/Node - £80-100K
Summary
Senior full-stack engineer at an AI-native fintech startup building a portfolio-management platform for private investors. Day to day: design APIs and data models and build high-performing UIs with React, TypeScript, Node.js, Next.js, GraphQL and AWS, hybrid with 3 days/week in the London office.
Senior Full Stack Engineer – React/TypeScript/AWS – £80–100k
We 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 Role
You’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 bring
- 5+ years of experience building production web applications
- Solid experience with React, TypeScript, and Node.js
- Familiarity with Next.js and GraphQL
- Previous startup experience
- A passion for clean code and intuitive product design
- Interest in fintech's
Nice to Haves
- Comfortable working with tools like Postgres, Prisma, GraphQL, or Next.js
- Hands-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 app
- Frontend: React, TypeScript, Next.js
Why Join?
- Opportunity to contribute to a mission-driven product at the intersection of finance and sustainability
- Work within a collaborative, high-performing team where individual input is valued
- Play a key role in an early-stage company where contributions directly influence success
- Competitive salary (£80–100k)
- Hybrid working model - 3 days per week in the London office
Senior Full Stack Engineer role - 3 days/week in London - £80-90k