Senior Full Stack Developer

Avanti Recruitment Limited; Farringdon; On-site; GBP 40,000 - 70,000; Full time

Job summary

Avanti Recruitment Limited in Central London is seeking a Senior Full Stack Developer for an outside IR35 contract focused on AI-assisted development. You will work across React, TypeScript, and Node.js to build modern web applications.

Join a fast-moving, collaborative engineering team and shape the technology strategy while using Claude Code, Cursor and GitHub Copilot to write better software.

Qualifications

• Strong commercial experience with React, TypeScript, and Node.js.
• Experience building modern web applications or SaaS products.
• Product-focused mindset with strong problem-solving skills.
• Comfortable using AI-assisted development tools.

Responsibilities

• Help build a suite of modern web applications that are central to our future technology strategy.
• Work across React, TypeScript, and Node.js.
• Take ownership of features from concept through to production.
• Contribute in a fast-paced, collaborative engineering team.
• Use AI coding tools as part of everyday development workflow.

Skills

React

TypeScript

Node.js

JavaScript

Product mindset

AI tooling familiarity

Tools

Claude Code

GitHub Copilot

Cursor

Codex

GitHub

Job description

Salary: £40,000 - 70,000 per year

Requirements:

• Strong commercial experience with React, TypeScript, and Node.js
• Experience building modern web applications or SaaS products
• Product-focused mindset with strong problem-solving skills
• Comfortable using AI-assisted development tools

Responsibilities:

• Help build a suite of modern web applications that are central to our future technology strategy
• Work across React, TypeScript, and Node.js
• Take ownership of features from concept through to production
• Contribute in a fast-paced, collaborative engineering team
• Use AI coding tools as part of everyday development workflow

Technologies:

• AI
• Claude Code
• Copilot
• Cursor
• GitHub
• React
• TypeScript
• Web
• NodeJS
• JavaScript
• Fullstack

More:

We are a growing technology business offering a Senior Full Stack Developer contract opportunity on an outside IR35 basis in Central London. This role is focused on AI-assisted development, where we use tools such as Claude Code, Cursor, GitHub Copilot, or Codex to build great software more effectively. We are looking for someone to join our fast-paced, collaborative engineering team and help shape the future of our technology strategy.

last updated 40 week of 2026