AI-First Full-Stack Developer — On-Site Southampton

Spectrum IT Recruitment; Eastleigh; On-site; GBP 55,000 - 75,000; Full time

Job summary

Spectrum IT Recruitment is seeking a Senior Full Stack Developer to join an AI-first team on-site in Southampton. You will work across UI, APIs, and data, using AI tools to speed delivery and improve quality.

The role spans frontend and backend across multiple parts of the stack, with emphasis on performance, security, and reliability, and involves contributing to architectural decisions.

Qualifications

• Experience with a modern frontend framework (React, Vue, Svelte or similar).
• Backend development experience in at least one language (Node.js/TypeScript, Python, Go, C# or similar).
• Experience with APIs, relational databases and cloud environments.
• Familiarity with CI/CD, containers and modern deployment practices.

Responsibilities

• Building and maintaining features end-to-end, from UI through to APIs, databases, and deployment
• Working across multiple parts of the stack rather than specialising in a single layer
• Contributing to technical and architectural decisions
• Using AI-assisted development tools to support coding, testing, documentation, and delivery
• Helping improve development practices as tools and technologies evolve

Skills

Frontend framework

Backend languages

APIs experience

Databases

Cloud experience

CI/CD

Containers

System design

Tools

Claude

GitHub Copilot

Cursor

Job description

Spectrum IT Recruitment is seeking a Senior Full Stack Developer to join an AI-first team on-site in Southampton. You will work across UI, APIs, and data, using AI tools to speed delivery and improve quality.

The role spans frontend and backend across multiple parts of the stack, with emphasis on performance, security, and reliability, and involves contributing to architectural decisions.