Senior JS React DeveloperHybrid work from WarsawB2B via ExperisB2B rate: 120-150 PLN netto+VAT/h As a Senior JS React Developer, you will be responsible for developing and maintaining frontend components using React.js, driving best practices, collaborating with designers and developers, and ensuring high performance and scalability.Responsibilities:·       Develop and maintain custom CMS modules/plugins and integrations.·       Contribute to all phases of the development lifecycle.·       Drive best practices: test-driven development, continuous integration, SCRUM, refactoring, code standards.·       Work closely with front-end designers and developers to ensure effective, visually appealing, and intuitive implementations.·       Ensure content is easily editable by non-technical staff.·       Optimise applications for maximum speed and scalability.·       Collaborate with other team members and stakeholders.·       Stay up-to-date on emerging technologies. Requirements:·       Frontend: Strong skills in React.js and Next.js (SSG/SSR, i18n, performance optimisation).·       Languages: JavaScript/TypeScript, HTML5, SCSS/Tailwind.·       APIs: REST, GraphQL.·       Tooling: Jira, Git, Figma, Confluence.·       Architecture (Preferred): Headless, Decoupled, Micro Frontends, Component-based design.·       Cloud & DevOps: Docker, Kubernetes, GitLab CI/CD, AWS/Azure/GCP. We offer:·       B2B contract via Experis·       50% REMOTE WORK, 50% work from the office·       Medicover·       Multisport·       E-learning platform·       Group insurance