OnHires is hiring a Senior Frontend Developer (React & React Native)

Remote^ Ukraine/Georgia/Armenia/Portugal/Cyprus/Poland Our client is an established product company with over 10 years on the market and a team of 200+ professionals. They are looking for a strong Senior Frontend Developer to join their growing engineering team. This role is ideal for an experienced frontend engineer who enjoys building scalable web applications, improving architecture, optimizing performance, and contributing to long-term product development. What we're looking for - 7+ years of commercial Frontend development experience - Strong JavaScript and TypeScript expertise - Deep knowledge of React and modern frontend development practices - Experience building and maintaining large-scale web applications - Strong understanding of frontend architecture, performance optimization, and code quality - Experience with state management solutions such as Redux, MobX, or Zustand - Experience working with REST APIs and GraphQL - Experience with modern frontend tooling and testing frameworks - Commercial experience with React Native - Upper-Intermediate English or higher Nice to have - Experience with design systems and component libraries - Experience with monorepos or microfrontend architecture - Experience with real-time applications - Technical leadership or mentoring experience Responsibilities - Develop and maintain modern web applications using React and TypeScript - Build new features and improve existing functionality - Refactor and optimize existing codebases - Ensure high performance and scalability across products - Participate in technical discussions and architectural decisions - Collaborate closely with developers, QA engineers, and product teams - Contribute to mobile-related initiatives when needed Why join? - Established product company with a strong engineering culture - Long-term projects with an active product roadmap - Opportunity to influence technical decisions and product evolution - Highly collaborative team environment - Remote-first setup within European time zones