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Senior React.js Developer

Senior React.js Developer

CycladPoznań, Greater Poland, Poland
28 days ago
Job description

technologies-expected :

  • JavaScript
  • TypeScript
  • HTML
  • SASS
  • LESS
  • GraphQL
  • Docker
  • React.js

technologies-optional :

  • CI / CD

    • about-project :

  • Location : Wrocław, Poznań, Kraków, 2 days from the office weekly
  • Budget : 120 PLN / net / h + VAT - B2B
  • Project language : English
  • Methodology : Scrum
  • Team Setup : Full-stack team of 10 engineers (Frontend, Backend, QA, Scrum Master)
  • Project Goal : Migration of an existing platform (governing 2000+ models) from IBM OpenPages to a modern technology stack to meet regulatory requirements.
  • Start Date : ASAP
  • End Date : 31.12.2025 (with a possibility of extension)

    • responsibilities :

  • Build responsive, accessible, and maintainable UIs using React.js, JavaScript / TypeScript, and modern HTML / CSS
  • Apply best practices in state management using Redux, Zustand, or similar libraries
  • Contribute to a micro-frontend architecture, integrating with a microservices-based backend
  • Write and maintain unit and integration tests using Jest, React Testing Library, or Cypress
  • Collaborate with backend developers, designers, and product managers in an Agile environment
  • Participate in code reviews, contribute to UI consistency via component libraries (e.g., Material UI, Ant Design), and ensure clean, maintainable code
  • Work with CI / CD pipelines, containerization (Docker), and frontend observability tools (e.g., Sentry, Datadog)

    • requirements-expected :

  • 4-6 years of experience withReact.js and solid knowledge of JavaScript / TypeScript
  • Proficiency in HTML5 / CSS3 / SASS / LESS and responsive design principles
  • Experience with micro-frontend architectures and modular application design
  • Familiarity with REST, GraphQL, or gRPC for backend integration
  • Awareness of CI / CD, Docker, and observability tools
  • Fluent English (spoken and written)
  • Experience working in Scrum or Kanban teams
  • Strong communication, problem-solving, and collaboration skills
  • Willingness to mentor junior developers and contribute to team knowledge sharing

    • offered :

  • Full-time job agreement based on B2B
  • Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible
  • Multisport card (also for an accompanying person)
  • Life insurance

    • benefits :

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of professional training & courses
  • life insurance
  • remote work opportunities
  • integration events
  • dental care
  • extra social benefits
  • employee referral program
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    Senior Developer • Poznań, Greater Poland, Poland