AI Frontend Engineer in City of Westminster

We are seeking a Frontend Engineer to join our Group Data team, working as part of the AI Agent Hub delivery team. This role will help build, extend, and improve the user experience for ITV's emerging internal AI platform, with an initial primary focus on Open WebUI, Svelte, TypeScript, TailwindCSS, reusable component architecture, and AI‑specific interaction patterns. You will work closely with platform, backend, product, design, architecture, cyber security, and data colleagues to create a secure, intuitive, and maintainable interface for ITV teams to use foundational models, assistants, agents, multimodal tools, and internal system integrations through a single governed experience.

The role sits initially in a small, hands‑on, stream‑aligned delivery team focused on shipping a high‑value internal product for ITV Studios and the wider business. It is well suited to someone who enjoys contributing to product‑facing engineering outcomes, working across front‑end and API boundaries, and translating emerging AI platform capabilities into simple, usable experiences for internal users.

Why this role is exciting: This is an opportunity to help shape the product experience for a new internal AI platform at an early stage, with meaningful influence over how ITV employees discover, use, configure, and trust AI assistants and agents.

Responsibilities:

• Build and improve front‑end features for the AI Agent Hub, primarily using Open WebUI, Svelte, TypeScript, and TailwindCSS.
• Refactor and maintain reusable Svelte components so the product remains consistent, accessible, performant, and easy to extend.
• Build high‑quality streaming experiences for LLM interactions, partial response rendering, loading states, cancellation, retry, error handling, and fallback messaging.
• Work closely with backend and platform engineers to align UI features with API design, authentication flows, observability, deployment patterns, and operational support needs.
• Help manage ITV's Open WebUI customisations, including pragmatic fork and upstream management, upgrade planning, dependency hygiene, and maintainable extension patterns.
• Run, debug, test, and release the application using local development tooling, Docker and Docker Compose, automated testing, pull requests, and clear support documentation.
• Contribute to front‑end test coverage using appropriate tools such as Vitest, Cypress, Playwright, or equivalent frameworks.
• Build product features that support responsible AI use, including feedback capture, evaluation hooks, audit views, provenance indicators, and human‑in‑the‑loop review patterns.
• Help shape interfaces for internal system integrations, including APIs, knowledge sources, workflow automation, RAG pipelines, tool calling, and MCP‑based capabilities.
• Support wider AI platform adoption across ITV by helping teams configure assistants, connect tools, expose internal systems safely, and embed AI capabilities into their existing workflows.

Qualifications:

• Experience building production web user interfaces, ideally with 3+ years of applied front‑end engineering experience.
• Strong Svelte or SvelteKit capability, or strong experience in another modern component framework such as React or Vue with a clear willingness to ramp quickly into Svelte.
• Strong TypeScript skills, including component design, state management, typed API integration, maintainable front‑end architecture, and debugging complex UI behaviour.
• Practical understanding of LLM‑powered product experiences, including streaming latency, prompt and system context, model selection, context windows, temperature, token usage, error handling, and fallback behaviour.
• Experience integrating with LLM APIs or OpenAI‑compatible endpoints, or a strong interest in learning how these patterns work in a governed enterprise platform.
• Good understanding of security and privacy fundamentals for internal tools, including authentication, authorisation, session handling, role‑based access control, and safe handling of user data.
• Strong product sense and communication skills and the ability to explain trade‑offs clearly, collaborate constructively, and contribute to technical discussions across product, design, engineering, architecture, cyber security, and data.
• Ability to work closely with backend engineers to shape API contracts, troubleshoot integration issues, and deliver coherent end‑to‑end product features.
• Strong SDLC experience and a willingness to explore user experiences beyond chat, including IDE configuration, CLI agents, MCP servers, pull request review agents, CI/CD pipeline agents, and developer experience tooling.

Additional Criteria:

• Experience contributing to design systems, accessibility standards, usability research, or developer experience improvements in internal platforms.
• Experience with, or interest in, customising and contributing to Open WebUI (Svelte TailwindCSS, Python) or a similar open‑source chat, assistant, or AI workspace interface.
• Experience with LiteLLM or similar LLM gateways, including model routing, virtual keys, budget controls, cost tracking, model aliases, retries, and fallback chains.
• Experience with Python, FastAPI, Node.js, or similar backend technologies sufficient to build or extend integration endpoints, API adapters, and lightweight platform services.
• Experience with Kubernetes, GitHub Actions, CI/CD pipelines, environment management, and production deployment workflows.
• Experience with observability for product and platform behaviour, ideally including OpenTelemetry, Prometheus, Grafana, structured logs, traces, and usage or cost dashboards.
• Familiarity with RAG pipelines, embeddings, vector stores such as Chroma, Qdrant, Postgres pgvector, or S3 Vector, and UX patterns for citations, knowledge selection, and retrieval confidence.

Benefits:

• Flexible working with a range of options.
• Generous holiday allowance, plus you can buy more.
• Annual bonus opportunity.
• Competitive pension contribution.
• Save as you earn – with an opportunity to buy ITV shares.
• Wellbeing and volunteering days plus a wide range of opportunities to help you live a balanced and healthy life.

Equal‑Employment Opportunity: We are committed to championing diversity, equity, and inclusion across our organisation and in everything we do. We actively encourage applications for this role from candidates who are Deaf, Disabled, and Neuro‑divergent, People of Colour, and candidates from working‑class backgrounds. As a Disability‑Confident Leader, if you meet the minimum criteria for a role and you have declared that you are disabled, we'll guarantee to take you to the next stage. We’re happy to discuss any support/personalisation you may need during our application and selection process as part of our reasonable adjustments.