Senior Frontend Engineer: AI Assistant UI & Framework

Farther; York and North Yorkshire; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Opportunity to work with a talented团队

Job summary

Farther is seeking a senior frontend engineer to shape the system that defines what a screen can be and its guardrails for unexpected model outputs.

You will help build the framework powering the AI assistant across React, TypeScript, and Python, turning model results into validated, submittable interfaces. You’ll own end-to-end delivery, mentor peers, and work with backend contracts to drive rapid, robust product growth.

Qualifications

• 6+ years building production web applications with frontend focus.
• Experience with agentic systems, LLMs, tool calling, and streaming responses.
• Strong typing and modular frontend patterns; end-to-end ownership.

Responsibilities

• Design the system that defines what a screen can be and guardrails for unforeseen model outputs.
• Contribute to both the framework and the AI assistant itself.
• Prototype, productionize, and deliver the assistant experience across surfaces.
• Build the underlying framework for declarative UI contracts and cross-team integration.
• Negotiate and version wire contracts with backend teams; enforce with tests.
• Mentor engineers and uplift engineering quality in reviews.

Skills

React

TypeScript

Python

TanStack Query

React-hook-form

Zod

Tailwind

CSS

Testing Library

ESLint

Prettier

GitHub Actions

Tools

AWS

Vercel

DynamoDB

CloudWatch

Job description

Farther is seeking a senior frontend engineer to shape the system that defines what a screen can be and its guardrails for unexpected model outputs.

You will help build the framework powering the AI assistant across React, TypeScript, and Python, turning model results into validated, submittable interfaces. You’ll own end-to-end delivery, mentor peers, and work with backend contracts to drive rapid, robust product growth.