Senior Data Engineer

Company: Cognizant
Apply for the Senior Data Engineer
Location: Burgess Hill
Job Description:

Burgess Hill (3 days a week)

Role: Senior Data Engineer – AI/LLM Applications

Location: Burgess Hill (3 days a week)

Employment: Fulltime

Role Overview

We are seeking a Data Engineer with experience in modern web technologies and AI/LLM integration to develop scalable applications and intelligent solutions. The role will focus on building interactive user interfaces, integrating AI capabilities and delivering AI-powered applications, including chatbots, assistants and intelligent workflows.

Key Responsibilities

  • Develop responsive and scalable applications using React.js, TypeScript, HTML5, CSS3 and JavaScript.
  • Build reusable UI components and implement modern frontend development patterns.
  • Integrate AI/LLM technologies, including OpenAI, Azure OpenAI, Microsoft Copilot and agentic AI frameworks, into web applications.
  • Design and develop AI-powered chatbots, virtual assistants, recommendation engines and intelligent workflows.
  • Collaborate with backend teams to integrate AI services, APIs and business logic.
  • Implement prompt engineering, AI response handling and conversational user interfaces.
  • Optimise application performance, scalability, security and reliability.
  • Participate in architecture discussions and contribute to AI solution design.
  • Troubleshoot, debug and maintain production applications, ensuring code quality and operational stability.

Essential Skills And Experience

  • Strong experience with React.js, TypeScript and JavaScript.
  • Proficiency in HTML5, CSS3 and responsive web application development.
  • Experience building reusable UI components and implementing modern frontend design patterns.
  • Experience integrating AI/LLM solutions, such as OpenAI, Azure OpenAI, Microsoft Copilot or agentic AI frameworks.
  • Understanding of chatbot development, AI assistants, recommendation engines and intelligent workflows.
  • Experience with prompt engineering, LLM response handling and conversational interfaces.
  • Ability to collaborate with backend teams to integrate AI services and business logic.
  • Strong understanding of application performance optimisation, scalability, security and production troubleshooting.

Desirable Skills

  • Experience deploying AI-enabled applications in cloud environments.
  • Familiarity with agentic AI architectures and intelligent workflow automation.
  • Experience contributing to application architecture and AI solution design.

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Posted: October 14th, 2026