Product Engineer - Frontend - UK

startups; London; On-site; GBP 50,000 - 80,000; Full time

Job summary

A leading tech startup seeks a Frontend Engineer to lead customer-facing surfaces of their cutting-edge AI platform. Responsibilities include developing web dashboards, defining frontend architecture, and driving performance initiatives. Ideal candidates have over 5 years of experience in web applications, particularly with React and TypeScript, and are comfortable collaborating with backend engineers.

Qualifications

• 5+ years of experience in shipping production web apps.
• Deep understanding of modern JavaScript/TypeScript.
• Proven ability to drive architecture trade-offs.

Responsibilities

• Own customer-facing surfaces of the product.
• Establish frontend architecture and component libraries.
• Drive performance and quality initiatives.

Skills

React

TypeScript

JavaScript

API Design

Accessibility

Session Management

Tools

Tauri

Electron

Kubernetes

AWS

GCP

Azure

Job description

Role Overview

Reflection’s alpha product turns cutting-edge AI research into a developer-friendly platform for engineering teams at global enterprises. You will lead the customer-facing surfaces of that product — from the web dashboard(s) to our upcoming desktop app.

What You’ll Work On

• Own Customer-Facing Surfaces

  • Ship the main web dashboard, in-app onboarding, and the desktop application (Tauri/Electron) that customers run locally.

• Define Frontend Architecture

  • Establish component libraries, state-management patterns, test automation, and build pipelines that keep velocity high as the team scales.

• End-to-End Product Delivery

  • Design and consume API contracts with backend peers; jump into server code when it unblocks the feature.

• Performance & Quality

  • Drive initiatives that improve first-load time, interaction latency, accessibility, and visual polish across devices.

• Enterprise-Grade Integrations

  • Implement secure auth flows (OIDC/SAML), role-based UIs, and configuration wizards that make deployment in regulated environments painless.

Must Haves

• 5+ years shipping production web apps with React (or a comparable framework) and TypeScript.

• Demonstrated ownership of complex features from spec → production → monitoring.

• Deep understanding of modern JavaScript/TypeScript, browser performance, accessibility fundamentals, and secure session management.

• Comfortable designing/consuming API contracts and collaborating closely with Python or Go backend engineers.

• Proven ability to make pragmatic architecture trade-offs and drive consensus in a fast-moving, remote team.

Good to Haves

• Experience building or maintaining design systems, micro-frontend platforms, or desktop apps with Tauri/Electron.

• Familiarity with Kubernetes, CI/CD pipelines, and cloud infra (AWS/GCP/Azure).

• Exposure to enterprise authentication (SAML, SCIM), SOC2/GDPR compliance, or financial-grade security.

• Prior work in AI/ML product surfaces, data visualization, or developer-tool UX.

• Open-source contributions, tech talks, or blogging that showcase thought leadership.