IFS

AI Engineer - Front end

Staines-upon-Thames, England, United Kingdom · On-site · Full-time

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About the role

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EmployerIFS
LocationStaines-upon-Thames, England, United Kingdom
Work styleOn-site
Employment typeFull-time
Employer posted1 day ago

Build and operate the interface, semantic layer and controls that let AI agents work inside IFS software safely.

This role is hybrid or remote.

The role:

You will own the web client of an AI agent product for our enterprise customers. It is a React and TypeScript single-page application, and almost everything on its screen arrives as a stream from a language-model agent.

What you will do:

Build an interface that people can trust while the content on it is still arriving, changing and occasionally wrong.
Turn what the agent produces into a usable interface: prose, generated views and actions the user can take.
Make sure the agent acts only with the user's explicit consent, and that people can always see what it did and why.
Own the front-end architecture, the component system and the contracts with the teams behind the agent.
Help move the interface towards Lit and Web Components, so that what we build is standards-based and not tied to a single framework or application.
Treat accessibility, performance, testing and observability as part of the product rather than a late pass.
Work across the boundary into the services your interface depends on, then ship what you build and run it in production.

Show full description

Why it is interesting:

Most front-end work assumes that a page loads and is then correct. Here the content arrives in pieces, gets revised, sometimes fails partway and is sometimes wrong. And some of it is code a model wrote, which the browser should not trust. The protocols involved are young and still changing (AG-UI, A2UI, MCP Apps). You will help shape them, not just consume them.

What we are looking for:

Substantial production single-page applications, built and operated, with real depth in TypeScript and React.
Asynchronous state you can reason about.
Browser security as a working concern: iframe sandboxing, postMessage, Content Security Policy, sanitising content you did not write.
Component and design-system work in a shared codebase, including web components used inside React.
Accessibility as a practice. You know how to keep it tested.
Willing to write Go and to read Python. Prior experience in either is not required.
Test-first habits and continuous delivery.
Clear writing. Decisions are recorded as short architecture decision records (ADRs), and protocols are documented before they change.
Comfortable working with AI coding agents as part of how you build.

Also valuable:

A product surface built on a language model in production: streaming, partial output, retries, and showing uncertainty.
Hands-on knowledge of the Model Context Protocol (MCP) and MCP Apps, AG-UI or A2UI.
Experience building with Lit and Web Components, including shadow DOM and custom elements used from other frameworks.
Expression languages or compilers.
A platform where behaviour is configured through data or metadata rather than written in code.
Data visualisation.
Familiarity with Docker, Kubernetes and Helm.
Knowledge of an enterprise domain: asset management, field service, manufacturing, supply chain.

Production experience building and operating substantial single-page applications, with real depth in modern TypeScript and a current framework such as Angular or React.

Built a product surface on top of a language model in production: streaming, partial output, cancellation, retries, and what to show when the system is uncertain.

Component architecture and design-system work in a codebase other teams contribute to.

Accessibility as a working practice, and performance work you can describe in numbers.

Comfortable across the boundary: you can write the service-side code your surface needs.

Automated testing, observability and continuous delivery as part of how you build.

Also valuable

A platform where behaviour is configured through data or metadata rather than written in code.

Mobile or progressive web applications, including offline behaviour and poor connectivity.

Voice interfaces.

Enterprise software domains: asset management, field service, manufacturing, supply chain.

We believe that coming together as a community, in person, is important for innovation, connection and fostering a sense of belonging. Our roles have the right balance of remote and in-office working to enable flexibility for managing your life along with ensuring a real connection with your colleagues and the broader IFS community.

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