Senior Frontend Engineer (React + Chrome Extension)

RemoteSalary not specified
Kraków, Poland

Tech Stack

ReactWebSocketsTypeScriptAPI

Job Description, Responsibilities & Requirements

About the Position

Senior Frontend Engineer (React + Chrome Extension)

TTEC Digital seeks a Senior Frontend Engineer (React + Chrome Extension) to join our team. This role is a full-time and fully remote opportunity!

Responsibilities

  • Build the Agent UI shell, the Chrome extension, the slide-out / pill workspace, the Control UI, and the per-module panels. This is the product wedge - what an evaluator demos in 5 minutes and decides "yes."
  • Real-time UI over live voice, desktop, and AI event streams, in a startup environment: 1-week sprints, Friday demos, fail fast and move forward.

Requirements

  • 7+ years frontend; senior-level React + TypeScript mandatory. HTML5, JavaScript, and graphics skills all ++++
  • You're a master of the browser platform itself, not just a framework user (canvas/SVG/WebGL, animation, rendering).
  • Strong design/UI skills a +++ - you have taste; your UIs look and feel professional without a designer holding your hand.
  • Real Chrome Extension experience - Manifest V3, content scripts, the messaging model, injecting UI over a host page. This is core, not a footnote.
  • Strong API skills - you design and consume clean APIs, and you understand the backend messaging systems behind them (pub/sub, event streams, WebSocket) well enough to reason about ordering, reconnects, and state sync.
  • Heavy WebSocket / real-time UI; you've built interfaces that update from a live event stream.
  • Plugin / module-federation or dynamic-component-loading experience.
  • Performance as a habit - render profiling, virtualization for dense data, sub-frame updates under a firehose event stream; the UI must never be the latency bottleneck.
  • State management under streaming data - optimistic updates, reconnect/replay handling, conflict resolution.
  • Extension security fluency - CSP, sandboxing, isolated worlds; we inject UI into other companies' pages and can never break or leak.
  • Automated UI testing (Playwright-class) as part of shipping, not a QA handoff.
  • Accessibility and keyboard-first flows as defaults - agents live in this UI 8 hours a day.
  • A master debugger in the browser - DevTools is an extension of your hands; you see the render bug, the leak, the layout thrash.
  • Go literacy is a plus (you'll read it).

Nice to Have

  • Go

We Offer

  • Fully remote work opportunity
  • Be part of an innovation group inside TTEC (NASDAQ: TTEC)
  • Work on the next generation of AI CX tools

About the Company

We're an innovation group inside TTEC (NASDAQ: TTEC), building the next generation of AI CX tools - automated QA, conversational analytics, knowledge assist, and agentic automation - for the world's biggest brands and the millions of customers they serve. We move like an early-stage startup, backed by the scale, distribution, and enterprise client base of a company that's been obsessed with customer experience since 1982.

This is the rare seat where getting in early actually matters at scale. TTEC is a public company at an AI inflection point. Ship the right products into thousands of live enterprise deployments and you don't just move a metric - you move the trajectory of the company and the value of the stock. The leverage is real, and the work compounds.

Job Details

Company name:
Alcor
Location:
Kraków, Poland
Employment Type:
Full-time
Work Mode:
Remote
Posted on TheJob:
Jul 28, 2026
Last checked:
Aug 12, 2026
Posted on the source:
Jul 27, 2026
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