Senior Frontend Engineer (NXJ-148)

Category

Next.js · React.js · Typescript

Type

Remote

Location

Poland · Ukraine

The Role

You’ll own the frontend architecture of a security platform that processes real-time video analytics, alarm events, and access control data across enterprise clients in the Middle East. The hard part: building responsive, performant UIs that handle live data streams, complex RBAC authentication flows, and dashboards that operations teams rely on 24/7. This is a hands-on senior role — you’ll lead technical decisions, review code, and mentor other frontend engineers.

About the Product

The platform combines AI-powered video analytics, IoT sensor networks, and real-time alarm correlation into a unified security operations interface. It serves enterprise clients managing physical security across multiple sites. The R&D team spans six countries, and the product is scaling through its next growth phase — you’ll be shaping how operators interact with mission-critical systems.

The Stack: React 18+, TypeScript, Next.js (App Router), Tailwind CSS v4, Zustand/Jotai for state, TanStack Query, Vitest + Playwright for testing. Backend is Python/FastAPI + .NET, cloud on AWS + Azure, CI through Azure DevOps. The frontend is modern with no legacy debt — your architecture decisions will define the product’s direction.

What You’ll Be Doing

  • Architect and build production-grade UIs with React and TypeScript — handling real-time data updates, large datasets, and responsive layouts
  • Implement secure authentication and authorization flows using OAuth 2.0 / OpenID Connect with RBAC
  • Select and implement rendering strategies (SSR, SSG, client-side) based on actual performance requirements
  • Translate Figma designs into pixel-perfect, accessible interfaces using Tailwind CSS v4
  • Own the frontend testing strategy: unit tests (Vitest), integration, and end-to-end (Playwright)
  • Optimize performance — bundle size, Core Web Vitals, data fetching patterns
  • Lead code reviews and mentor developers on frontend architecture decisions

What We Expect

Must-have

  • 7+ years of frontend development, 5+ years with React and TypeScript in production
  • Deep experience with Next.js App Router or TanStack Start/Router
  • Hands-on OAuth 2.0 / OpenID Connect implementation
  • Strong CSS skills (flexbox, grid, animations) + Tailwind CSS v4
  • Testing with Vitest/Jest and Playwright
  • Figma-to-production workflow
  • Advanced English (C1) — daily communication with an international team across UAE, Europe, and Middle East

Nice to have

  • React Native for cross-platform mobile
  • WebSockets / SSE for real-time data streaming
  • i18n and RTL layout support
  • Keycloak or Azure AD integration
  • Data visualization (Recharts, D3)
  • Security dashboards or compliance applications

Why This Role Is Worth Your Time

  • You’ll own the frontend architecture of a platform that protects real organizations — security operations, not another SaaS dashboard
  • Modern stack with real technical challenges: real-time data, complex auth flows, multi-timezone operations
  • Full-time remote from Ukraine or Poland, with Newxel benefits (medical insurance, 20 vacation days, equipment)
  • International environment with a team across six countries — already have a Ukraine-based engineer on the team

Apply for this position