JustJoin.IT Praca zdalna Senior

Senior Frontend Developer

Link Group

⚲ Warszawa, Gdańsk, Łódź, Poznań, Wrocław, Kraków, Lublin, Białystok, Olsztyn, Szczecin

120 - 150 PLN netto (B2B)

Wymagania

  • Git
  • Babel
  • TypeScript
  • REST API
  • React
  • JavaScript
  • GraphQL
  • Webpack

Opis stanowiska

We are looking for an experienced Frontend Developer passionate about building scalable, high-performance user interfaces. In this role, you will contribute to the development and evolution of a large-scale administrative web platform, ensuring high code quality, maintainability, and performance. Key Requirements • 5+ years of experience in frontend development, preferably in complex or enterprise-scale environments • Strong commercial experience with React (state management, hooks, component lifecycle, application architecture) • Expert knowledge of modern JavaScript (ES2024+), including asynchronous programming and modular architecture • Solid hands-on experience with TypeScript (advanced typing, generics, large-scale React integration) • Experience integrating frontend applications with REST APIs (HTTP methods, authentication, data handling) • Practical knowledge of build tools such as Webpack, Babel, npm/yarn • Strong experience with Git (branching strategies, code reviews, conflict resolution) • Experience designing and implementing scalable and high-performance frontend architectures • Ability to write automated tests using Jest, React Testing Library, and Cypress Nice to Have • Experience working with GraphQL in React-based applications • Understanding and practical use of software design patterns Responsibilities • Develop and enhance a complex React-based administrative platform • Contribute to frontend architecture decisions and scalability improvements • Maintain high standards of code quality (Clean Code, SOLID principles) • Write and maintain unit, component, and end-to-end tests • Collaborate with cross-functional teams in an agile delivery environment