React Developer (Electron)

SCALOSoftware development

Locations: Wrocław, Powstańców Śląskich, Wrocław, Country code: pl; tryb realizacji usług: 100% zdalnieContractSenior

Salary20800 - 22400 PLN per month net b2b

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Job Details

Languages: Znajomość języka angielskiego na poziomie B2/C1
Experience: Minimum 7 lat komercyjnego doświadczenia w rozwoju aplikacji z wykorzystaniem React; minimum 1-2 lata komercyjnego doświadczenia z Electron w rozwoju aplikacji desktopowych
Required Skills: TypeScriptREST APIReactCI/CDPlaywright

Have at least 7 years of commercial experience developing applications with React.
Have 1–2 years of commercial experience developing desktop applications with Electron.
Have strong practical experience with React and TypeScript in production projects.
Have experience building cross-platform applications from one codebase for web, mobile, and desktop.
Have practical Capacitor experience, including iOS/Android configuration, plugins, permissions, and native builds.
Understand Electron main, renderer, and preload processes, secure IPC, context isolation, and sandboxing.
Have experience packaging and distributing desktop applications using tools such as electron-builder or electron-forge.
Know Vite, npm or pnpm, and monorepo solutions; have experience with Tailwind CSS and reusable components.
Have experience with state and data-layer tools such as Zustand and TanStack Query, and with offline-first applications.
Have experience with real-time communication such as WebSocket or SSE, and integration with REST APIs/OpenAPI.
Know OAuth2/OIDC and JWT, and understand secure token storage.
Have experience testing frontend applications with Jest or Vitest, Testing Library, and E2E tools such as Playwright, Detox, or Appium.
Have experience with CI/CD and build and publication processes for cross-platform applications, plus practical Git and code review experience.
Know English at B2/C1 level.

Develop and maintain a React 19 and TypeScript application for web, mobile, and desktop from a shared codebase.
Design shared frontend architecture and platform-specific layers.
Develop the mobile layer with Capacitor, including native APIs, plugins, and permissions.
Develop the Electron desktop layer, including main, renderer, and preload processes, secure IPC, and operating-system integration.
Implement offline-first data persistence, synchronization, conflict handling, and real-time data using WebSocket or SSE.
Integrate REST, OpenAPI, and gRPC-web APIs, and implement authentication, authorization, and secure on-device data storage.
Build responsive interfaces and a shared design system, and optimize performance and stability across platforms.
Develop unit, component, and end-to-end tests; support CI/CD, automated builds, and application releases.
Implement monitoring, crash reporting, and client-side error handling, and participate in code reviews.
Collaborate with the architect and backend, DevOps, and QA teams in a distributed project environment.

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