Senior Front End Engineer (React) - GraphQL on Neptune

Posted 2 hours 46 minutes ago by TechNET IT Recruitment Limited

£450 Daily
Contract
Not Specified
Other
Not Specified, United Kingdom
Job Description

Senior Front End Developer (React, GraphQL, Amazon Neptune)

Fully Remote (UK-based)
Initial 3-month contract
Up to £450 per day (Negotiable)

We're working with a major UK organisation building a next-generation knowledge platform that combines structured data, graph technology, and AI-enabled workflows.

This is a senior Front End role focused on developing high-performance interfaces that interact directly with a semantic knowledge graph platform.

Key Responsibilities

  • Build and maintain complex React/Next.js applications in a modern TypeScript codebase
  • Develop rich UI experiences powered by GraphQL APIs connected to Amazon Neptune
  • Create advanced Search & Discovery interfaces, combining keyword and AI/vector-based retrieval
  • Build dashboards supporting human-in-the-loop validation of AI-generated outputs
  • Ensure strict adherence to WCAG 2.2 AA accessibility and design system standards
  • Collaborate closely with Back End engineers, data teams, and UX/service designers
  • Integrate Front End applications with AWS-hosted services (Lambda, API Gateway, ECS)

Core Skills Required

  • Strong Front End engineering experience with React or Next.js + TypeScript
  • Proven expertise consuming and delivering applications built on GraphQL APIs
  • Hands-on experience working with GraphQL backed by Amazon Neptune is essential
  • Strong state management skills (Redux, TanStack Query, or similar)
  • Deep practical accessibility experience (WCAG standards)
  • UK-based and able to meet security and governance requirements

Desirable Experience

  • Knowledge graph or semantic data awareness (RDF, JSON-LD, linked data concepts)
  • Experience building high-performance search UIs (OpenSearch, Elastic, vector search)
  • Familiarity with CI/CD pipelines and Infrastructure-as-Code (Terraform/CDK)
  • Interest in AI-enabled workflows and validation tooling

Please note: GraphQL experience specifically with Amazon Neptune is an absolute minimum requirement. Applications without this will not be considered.