Work type: Office/Remote Technical Level: Senior Job Category: Software Development We're seeking an experienced Frontend Developer to build modern web applications using React and Next.js. What You'll Do: Build authentication systems and user flows Develop reusable UI components and maintain design systems Implement comprehensive testing and optimize performance Work with APIs and handle form validation/error handling Collaborate with backend teams on integration Maintain high code quality standards Requirements: 5+ years React/Next.js experience Authentication systems (NextAuth.js) State management (Jotai atoms) CSS Modules & SCSS for styling Testing with Jest/React Testing Library RESTful API integration experience Technical Knowledge: Next.js 14+ App Router architecture Server-side rendering and client components Responsive design and mobile-first development Internationalization (i18n) implementation Docker containerization basics Nice to Have: reCAPTCHA integration experience Modal management systems Email validation utilities CI/CD pipeline knowledge Performance optimization techniques Accessibility best practices Mantine UI library experience Our Environment: Modern Next.js applications with latest features Component-driven architecture Comprehensive testing coverage Collaborative development with backend teams We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers