Senior Frontend Engineer (React + Chrome Extension)

New

TTEC DigitalAI CX tools

Source API remote eligibility restrictions: PolandFull-TimeSenior

Salary not disclosed

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Job Details

Have 7+ years of frontend experience.
Bring senior-level React and TypeScript experience; both are mandatory.
Have real Chrome Extension experience, including Manifest V3, content scripts, the messaging model, and injecting UI over a host page.
Design and consume clean APIs and understand backend messaging systems such as pub/sub, event streams, and WebSocket.
Have built interfaces that update from live event streams using WebSocket or other real-time UI patterns.
Have plugin, module-federation, or dynamic-component-loading experience.
Profile rendering, virtualize dense data, and support sub-frame updates under high-volume event streams.
Manage state under streaming data, including optimistic updates, reconnect and replay handling, and conflict resolution.
Understand extension security, including CSP, sandboxing, and isolated worlds.
Use automated UI testing, such as Playwright-class tools, as part of shipping.
Build accessibility and keyboard-first flows into interfaces.
Be proficient with browser debugging and DevTools.

Build the Agent UI shell, Chrome extension, slide-out and pill workspace, Control UI, and per-module panels.
Develop real-time interfaces over live voice, desktop, and AI event streams.
Build and maintain the React application and Chrome extension using Manifest V3, content scripts, injected iframes, and a page-overlay pill.
Implement WebSocket-driven user interfaces.
Use plugin, module-federation, or dynamic-component-loading patterns.
Manage screen real estate across the interface.
Implement the design system in code.
Deliver work to committed timelines.

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