Middle Frontend Engineer

We’re looking for a Frontend Engineer who will take responsibility for the quality of user interfaces and build products that are a pleasure to use. You’ll work closely with designers and product managers, write tests to cover your code, and actively use AI tools in your daily work. What you will do:- Develop and maintain web applications using React or Vue. - Build reusable and maintainable frontend components. - Work closely with designers and product managers to turn product requirements and designs into effective UI solutions. - Write and maintain unit and E2E tests covering critical application scenarios. - Review tests generated with AI tools, identify gaps, and improve them manually when necessary. - Use AI-assisted development tools such as ChatGPT, GitHub Copilot, Cursor, and similar solutions for development, refactoring, debugging, and test creation. - Take responsibility for frontend code quality and continuously look for ways to improve it. - Contribute to improving usability, consistency, and overall user experience. - Participate in technical discussions and contribute to frontend architecture and implementation decisions. Requirements:- 3+ years of commercial experience developing production applications with React or Vue. - Strong knowledge of JavaScript/TypeScript. - Hands-on experience writing unit and E2E tests using tools such as Jest, Vitest, Playwright, Cypress, or similar. - Understanding of how to assess whether tests adequately cover the behavior and risks of an application. - Experience reviewing and improving tests generated with AI tools. - Openness to exploring new AI-assisted approaches to software development. - Practical experience using AI-assisted development tools in day-to-day work. - Ability to work effectively with designers and product managers. - Language Proficiency: English at B2-C1 level, Russian at B2 level. Additional experience we value:- Previous experience in UI/UX design or close collaboration with UI/UX designers. - Understanding of modern design systems and component-based architecture. - Experience building and maintaining reusable component libraries. - Understanding of web accessibility principles. - Experience creating responsive interfaces for different devices and screen sizes. - Familiarity with modern frontend development practices and tools. Why join us:At Mad Devs, you will join a company that values creativity, strategic thinking, and continuous improvement. You will work on projects that reach millions of users worldwide, alongside a strong and supportive team. Here, you will grow professionally, take on meaningful challenges, and contribute to products that solve real problems at scale.