Senior Frontend Engineer – React, AI-Driven Platform

Unitary; England; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Flexible hours

Hybrid working in London 1-2 days per週

Competitive salary and equity

Parental leave

Sick leave

Development budget

Health and wellness budget

Team offsites

Job summary

Unitary is a fast-growing AI startup building a factory for custom operations agents. You will own the frontend for our Virtual Agent products, shaping how customers see and use AI-driven work and turning early builds into a polished platform.

You will refactor the current frontend into a scalable library with reusable components and shared tooling. You will work closely with product and design, bringing strong product thinking to every screen and ensuring robust, production-grade frontend code

Qualifications

• Senior, product-minded React engineer with startup frontend experience.
• Strong React with state management, performance and testing.
• Deep understanding of TypeScript, Next.js, Vite, and design systems.
• Experience building multiple frontends at startups and moving fast.
• Experience using AI coding agents as part of workflow.
• Strong product thinking and engineering discipline.
• Hands-on and committed to staying involved for at least 12 months.

Responsibilities

• Own the frontend for our Virtual Agent products and interfaces.
• Re-imagine and refactor frontend into a scalable, reusable platform.
• Collaborate with product and design to shape features and UX.
• Bridge Product, Design and Platform Engineering to ensure API-backed surfaces.

Skills

React

TypeScript

Design systems

Frontend architecture

Product thinking

AI tooling

Tools

Next.js

Vite

Job description

Unitary is a fast-growing AI startup building a factory for custom operations agents. You will own the frontend for our Virtual Agent products, shaping how customers see and use AI-driven work and turning early builds into a polished platform.

You will refactor the current frontend into a scalable library with reusable components and shared tooling. You will work closely with product and design, bringing strong product thinking to every screen and ensuring robust, production-grade frontend code