Senior Frontend Engineer (React + Chrome Extension)

Alcor

Remote (Poland) Remote Full-time 5 days ago
Workplace
Remote
Location
Poland
Who can apply
Remote for people based in Poland

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About the role

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

The work:

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.

Who we hire — the DNA

* Self-starters and do-ers with grit — hackers in the best sense, with a startup mentality and a show-me bias: working software over slides, prototypes over proposals.

* Want to learn, love new technology. This platform is built on the latest technology, and that technology changes and advances monthly. You adapt to change quickly — new tools, new models, new priorities — without drama.

* Master debuggers and problem solvers. You love solving complex problems, you think outside the box, and you multitask across domains without losing the thread.

* AI-native. You work with AI on all levels — you understand the technology around you (LLMs, SLMs, RAG, knowledge graphs, agents, training, eval) and you use AI tools daily to exponentially increase your velocity.

* Distributed-systems literate. High-efficiency, event-driven, low-latency systems are our world; you understand what that demands.

* Innovators who ship. You demonstrate ideas easily, fail fast, and move forward. You make committed timelines and hit them.

* You consider yourself exceptional — and you like winning. So do we.

No one will have everything in this description. We're looking for well-rounded, smart people who move fast.

What You Will Do:

The role:

* 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.

What you'll own:

* React app + Chrome extension (Manifest V3, content scripts, injected iframe, page-overlay pill) · * WebSocket-driven real-time UI · plugin / module-federation patterns * Screen-real-estate management * The design system in code * Your committed timelines.

Who you are:

* A self-starter with a show-me mentality — you move from prototype to real-world product quickly and demonstrate ideas with working UI, not mockups. * You love new technology and adapt fast when it changes. * Consistent by discipline: you use shared libraries and established patterns instead of reinventing per feature — consistency is what keeps a small team fast. * You use AI tools daily to multiply your velocity. * You consider yourself exceptional, love solving hard problems, and like winning.

What You Will Bring:

* 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).

Originally posted on Himalayas

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  • TypeScript 65%
  • JavaScript 53%
  • CSS 48%
  • HTML 42%
  • CI/CD 32%

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