Senior Full-Stack Engineer — Real-Time UI & Live Replay (Hybrid)

Hcompany; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

H is seeking a senior frontend engineer to build the H Platform web app and the HoloTab extension. You’ll design live run views, replay capabilities, and determine how data flows from Python APIs to the UI.

You’ll work on cross-cutting UI patterns and shared components, ensuring a smooth end-user experience for FDEs and customers. You’ll join Product Engineering with the VP of Engineering as hiring manager, collaborating with product owners across platforms.

Qualifications

• Shipped a production product in React and TypeScript as a senior engineer.
• Able to implement API changes alongside UI.
• Write correct, concurrent UI code and handle live, async data.

Responsibilities

• Build the H Platform web app.
• Build and improve the HoloTab extension.
• Design the live run view and replay.
• Make API changes behind features.
• Set shared component patterns.
• Make long-running workflows easy to deploy and watch.

Skills

React

TypeScript

Frontend

Live data

UI design

Python

Tools

Chrome extensions

Chrome DevTools Protocol

FastAPI

WebSockets

Preact/Vite

Job description

H is seeking a senior frontend engineer to build the H Platform web app and the HoloTab extension. You’ll design live run views, replay capabilities, and determine how data flows from Python APIs to the UI.

You’ll work on cross-cutting UI patterns and shared components, ensuring a smooth end-user experience for FDEs and customers. You’ll join Product Engineering with the VP of Engineering as hiring manager, collaborating with product owners across platforms.