Full-Stack Engineer - AI Startup

Salary: £120,000 - 150,000 per year Requirements: • 8+ years commercial software engineering experience. • Strong full-stack development experience with no significant frontend or backend bias. • Recent, hands-on experience with TypeScript, React, and Node.js. • Proven experience building and maintaining production software. • Experience taking ownership of projects and features from development through to production. • Regular use of modern AI coding/development tools, such as Claude Code, Cursor or similar. • Strong understanding of software engineering principles and architecture. • Experience working with APIs, cloud platforms, and modern software development practices. • Previous experience working within a startup or early-stage technology business is highly desirable. • Experience with one or more of Vertex AI, Large Language Models (LLMs), Agentic AI, Docker, CI/CD, Infrastructure as Code, Microservices, Event-driven architecture, AWS, or Google Cloud Platform (GCP) would be highly advantageous. • Strong interest in modern AI engineering and cloud-native development would be highly beneficial. Responsibilities: • Build and deliver end-to-end product functionality across the full stack. • Develop and maintain high-quality production software. • Work across backend, frontend, database, and API development. • Contribute to technical architecture and engineering decisions. • Take ownership of features from concept through to production. • Work closely with founders and engineering leadership to shape the product roadmap. • Help establish strong engineering standards as the team grows. • Use modern AI-assisted development tools to accelerate development and productivity. • Troubleshoot, maintain, and continuously improve production systems. • Contribute to the development of AI-powered and agentic solutions. Technologies: • Agentic AI • AI • API • AWS • Backend • CI/CD • Claude Code • Cloud • Cursor • Docker • Frontend • GCP • React • TypeScript • microservices • NodeJS • Git • JavaScript • REST • Fullstack More: We are an exciting early-stage AI startup building an agentic platform for institutional finance. We are a small, high-performing team of fewer than 10 people, moving quickly and building towards our next stage of growth and investment. This is a London-based permanent role with 4 days per week in the office, offering a salary of £120,000 - £150,000. We offer direct exposure to the founding team, significant influence over technical direction and architecture, and genuine ownership and responsibility from day one. last updated 39 week of 2026