Job Title: Frontend EngineerLocation: Remote (Argentina or Brazil)Employment Type: Full timeExperience Level: SêniorRate: Basead on experienceRole Summary:We are seeking a Frontend Engineer with significant experience building and scaling high-traffic B2C applications (10M+ daily active users). This is a high-impact, technical role focused on enhancing the user experience on one of the most visited pages of a global platform.The ideal candidate has deep expertise in React, TypeScript, A/B Testing, and GraphQL, with a background in product engineering and a strong sense of ownership.Key Responsibilities:Develop, test, and launch high-quality frontend features for large-scale consumer-facing applications.Collaborate with cross-functional teams including product managers, designers, and backend engineers.Take technical ownership of high-traffic components, such as the Comments Page.Review code, contribute to architectural discussions, and help establish development best practices.Mentor junior engineers and support the growth of the engineering team.Required Skills & Experience:10+ years of hands-on experience in frontend software development.Proficiency in JavaScript, TypeScript, and modern frameworks like React, Vue, Angular, LIT, or Polymer.Strong knowledge of CSS, responsive design, and UI performance optimization.Experience with GraphQL, REST APIs, and scalable API design.Understanding of distributed systems and large-scale data handling.Excellent collaboration and communication skills in a fully remote environment.Bachelor's degree in Computer Science or equivalent practical experience.Preferred Qualifications:Experience working on applications with over 10 million daily active users.Familiarity with modern product engineering practices such as A/B testing and feature flagging.Background working in large engineering teams and distributed system environments.