Salary: £125,000 - 125,000 per year Requirements: We require strong full-stack engineering experience using modern frontend and backend frameworks. We require commercial experience with one or more of the following: Python, Node.js, or Java. We require proven experience building REST APIs, workflow services, and production-grade web applications. We require working knowledge of LLM APIs, prompt engineering, and AI agent/tool-calling patterns. We require experience with authentication and authorisation, including role-based access control (RBAC). We require experience with logging, monitoring, and secure coding practices. We prefer experience integrating with platforms such as ServiceNow, Jira, Zendesk, Microsoft Teams, Slack, and telephony/chat systems. We prefer experience building internal enterprise support or helpdesk tooling. We require availability to work onsite in Sheffield 3 days per week. We require BPSS eligibility for this engagement. Responsibilities: We will have you design and develop user-facing applications for employees, support agents, and administrators. We will have you build and maintain frontend, backend, and API layers supporting chat interfaces, ticket submission, status tracking, and escalation workflows. We will have you develop LLM and agent workflows to automate repetitive IT helpdesk tasks such as password resets, account unlocks, software access requests, and knowledge-based troubleshooting. We will have you integrate with enterprise platforms including ticketing, identity, collaboration, and ITSM systems. We will have you implement prompt orchestration, guardrails, fallback logic, and human handoff mechanisms. We will have you own feature delivery from solution design through deployment and production release. We will have you work across the full product lifecycle to deliver scalable and secure AI-enabled support solutions for enterprise users. Technologies: AI API Backend Frontend Support ITSM JIRA Java LLM Python REST RBAC ServiceNow Slack Web Zendesk NodeJS Fullstack More: We are seeking a Senior Full-Stack AI Engineer to help us build an end-to-end AI-powered helpdesk product for enterprise users. This is a contract role based in Sheffield, with 3 days onsite per week as mandatory at Grosvenor House, 1 Wellington St, Sheffield City Centre, Sheffield S1 4NB. The engagement runs until 30/11/2026 and is inside IR35. We offer the opportunity to work across the full product lifecycle, delivering scalable, secure AI-enabled support solutions that combine web applications, backend services, agent orchestration, and enterprise workflow automation. last updated 23 week of 2026