Senior React Engineer

We're looking for an experienced Front-End Engineer to help build modern, scalable web interfaces for our global payment platform.
You'll work with cutting-edge technologies and contribute to a high-impact, fast-moving product.
Responsibilities Develop and maintain UI using React JS , ES6, HTML5, CSS3 Build modular, scalable web applications with microfrontend architecture Write and maintain automation tests using Selenium , Cypress , Playwright , or similar Contribute to system performance, scalability, and code quality Collaborate in an Agile team environment Improve internal processes and frontend infrastructure Requirements 7+ years in React JS , HTML5, CSS3 Strong testing skills – test automation experience with tools like Selenium, Cypress, or Playwright Proficient with databases (PostgreSQL, NoSQL, MongoDB – advantage)4+ years working with modern CSS-in-JS and frontend frameworks Familiar with build tools , CI/CD pipelines (advantage) Passion for modern frontend development and emerging technologies Team player with a proactive, problem-solving mindset We Offer Full-time role with 2 office visits/week (Buenos Aires) Long-term contract with career growth opportunities Competitive compensation based on experience Work alongside a world-class engineering team Challenging, high-impact projects in a global tech environment #J-18808-Ljbffr