Back End Developer

Back End Developer

Posted 3 days ago by Maxwell Bond

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£450 Per day
Outside
Onsite
Liverpool, Merseyside
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API Design Application Programming Interface (API) Artificial Intelligence Authorisation (Computing) Content Management Systems Front End (Software Engineering) Full Stack Development Github JavaScript (Programming Language) Microservices Microsoft Azure Node.js Nodes (Networking) NoSQL React.js Scalability Software Coding Software Development SQL (Programming Language) Supervision

Summary: The role of Senior Developer focuses on supporting API development and backend delivery for a high-traffic consumer platform, utilizing Node.js and AI-assisted development tools. The position requires collaboration with front-end engineers to create scalable and secure systems. Candidates should have extensive experience in backend development and be capable of making independent technical decisions. The contract is for 6 months, requiring 3 days a week in Liverpool and classified as outside IR35.

Key Responsibilities:

  • Deliver production-ready APIs fast and independently
  • Collaborate effectively with front-end developers to design and implement seamless integrations
  • Build reliable, maintainable APIs and data systems
  • Apply caching and optimization techniques for high-traffic environments
  • Make confident technical decisions with minimal guidance
  • Follow clear architectural standards and established development patterns
  • Understand backend performance, scalability, and security at production scale
  • Use AI coding tools to speed up development

Key Skills:

  • Extensive production experience with Node.js
  • RESTful API design and development
  • Database design and optimization (SQL and/or NoSQL)
  • Authentication, authorization, and security best practices
  • Experience with AI coding tools (GitHub Copilot, Claude, Cursor, or similar)
  • Nice to have: React JS / Next.js, Payload CMS, Azure, Microservices architecture

Salary (Rate): £450/day

City: Liverpool

Country: United Kingdom

Working Arrangements: on-site

IR35 Status: outside IR35

Seniority Level: Senior

Industry: IT

Detailed Description From Employer:

Senior Developer (Contract, AI-Driven Environment, Node.JS)

We’re looking for an experienced backend senior developer to support API development and backend delivery for a high-traffic consumer platform. You’ll work alongside front-end engineers to build scalable, secure, and performant systems using modern tools and AI-assisted development.

*6 month, 3 days a week in Liverpool. OutsideIR35*

You’ll be a good fit if you:

  • Deliver production-ready APIs fast and independently
  • Have proven experience with consumer-facing platforms
  • Use AI coding tools (Cursor, Claude Code, Codex, or similar) to speed up development
  • Make confident technical decisions with minimal guidance
  • Follow clear architectural standards and established development patterns
  • Understand backend performance, scalability, and security at production scale
  • Build reliable, maintainable APIs and data systems
  • Collaborate effectively with front-end developers to design and implement seamless integrations
  • Apply caching and optimization techniques for high-traffic environments

We’re not looking for:

  • Developers needing extensive supervision or mentoring
  • Anyone without production experience in consumer-facing systems
  • Those who avoid AI coding tools

Core Technical Requirements:

  • Node.js (extensive production experience) - this is key, you must have extensivee experience with this.
  • RESTful API design and development (production experience)
  • Database design and optimization (SQL and/or NoSQL)
  • Authentication, authorization, and security best practices
  • AI coding tools (GitHub Copilot, Claude, Cursor, or similar)

Nice to Have:

  • React JS / Next.js (for full stack capability)
  • Payload CMS
  • Azure
  • Microservices architecture
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