Lead / Principal Full Stack Developer React AI Engineer

Salary: £40,500 - 70,500 per year

Requirements:

• 8+ years commercial software engineering experience.
• Strong expertise with React and TypeScript.
• Experience developing backend services using Node.js.
• Experience building scalable APIs and modern web applications.
• Strong understanding of software architecture and engineering best practices.
• Commercial experience working with AWS or Google Cloud Platform (GCP).
• Daily use of AI-assisted development tools such as Claude Code, GitHub Copilot or similar.
• Hands-on experience building or integrating AI-powered applications, LLMs or agentic systems.
• Excellent communication and stakeholder engagement skills.
• A proactive mindset with a passion for delivering high-quality software.

Responsibilities:

• Design and develop modern, scalable React applications.
• Build backend APIs and services using TypeScript and Node.js.
• Deliver production-ready features across the full software development lifecycle.
• Integrate AI capabilities, LLMs and agentic workflows into customer-facing products.
• Collaborate with AI Engineers to build seamless AI-powered user experiences.
• Champion engineering best practices, testing and code quality.
• Improve application performance, scalability and reliability.
• Mentor engineers and contribute to technical leadership across the team.
• Work closely with cross-functional teams in an Agile environment.

Technologies:

• AI
• AWS
• Backend
• Claude Code
• Cloud
• Copilot
• GCP
• GitHub
• React
• TypeScript
• Web
• NodeJS
• Agentic AI
• CI/CD
• Docker
• Git
• REST
• microservices
• Fullstack

More:

We are partnering with an innovative, fast-growing technology company that is redefining how AI-powered products are built and delivered. This is a permanent hybrid role based in London, with 3-4 days per week in the office. We offer a base salary of £120,000 - £160,000 plus equity, excellent benefits, 30 days annual leave plus bank holidays, and the opportunity to work on cutting-edge AI products used by customers around the world. You will join a high-performing engineering team with genuine ownership and autonomy, along with excellent opportunities for career growth and technical leadership.

last updated 35 week of 2026