Quality Assurance jobs in Brazil

Senior Frontend Engineer – React / Smart TV Applications Location : Remote in Brazil

Experience: 3+ years

Tech Stack: React, TypeScript, JavaScript, Svelte, Astro, AWS

We are seeking an experienced Frontend Engineer to build and enhance high-quality user interfaces for Smart TV and embedded device applications. This role focuses on developing performant, user‑centric applications using React, with exposure to Svelte and Astro, while working in non‑browser environments such as Smart TVs and other connected devices.

You will collaborate closely with product, QA, and engineering teams to translate business requirements into scalable, high‑quality frontend solutions.

• Design, develop, and maintain frontend applications using React, with exposure to Svelte and Astro.
• Build applications for Smart TVs and embedded/non-browser environments.
• Translate business objectives into technical and functional requirements.
• Integrate frontend applications with REST APIs and third‑party SDKs.
• Ensure high‑quality user experience, performance, and visual consistency.
• Participate in Agile ceremonies, working across multiple Scrum teams.
• Write and maintain unit tests, support TDD, and contribute to CI/CD pipelines.
• Collaborate with QA teams and support automation testing using Selenium or similar tools.
• Follow and promote software design patterns and best engineering practices.
• Act as an advocate for code quality, UX excellence, and maintainability.

• 3+ years of experience in HTML, CSS, and JavaScript development.
• 3+ years of frontend development experience using modern frameworks such as React, Svelte, or Astro.
• Strong experience with TypeScript and JavaScript.
• Experience developing applications in non-browser environments (Smart TVs, embedded devices).
• Strong debugging and troubleshooting skills.
• Experience integrating and consuming REST APIs.
• Hands‑on experience with AWS environments.
• Familiarity with unit testing, CI/CD, branching strategies, and Agile development practices.
• Experience with Selenium or QA automation tools.
• Ability to work effectively in a fast‑paced Agile environment.

• Experience with Smart TV platforms (e.g., WebOS, Tizen, Roku, Fire TV, Android TV).
• Exposure to media or streaming applications.
• Experience with design systems and component libraries.

• Strong interpersonal and communication skills.
• Ability to collaborate with business partners during requirements and functional design sessions.
• Consumer‑focused mindset with a strong eye for detail and user experience.
• Proactive, adaptable, and quality‑driven approach to development.