Descripción del empleo: **Position:** Senior QA Automation Engineer **Location:** Remote from Argentina or Brazil only (Full\-time) **Type:** Contractor – Long\-term project We are seeking a **Senior QA Automation Engineer** to join an international team working on high\-impact web and mobile applications. The ideal candidate will have strong experience in test automation, API testing, and mobile test frameworks, with advanced English skills to collaborate effectively in a global environment. **Responsibilities:** * Design, develop, and maintain automated scripts for web and mobile applications. * Execute and analyze automated test suites, detecting defects and regressions. * Perform API testing with Postman, ensuring reliable integrations. * Develop and maintain mobile automation tests with **XCUITest (iOS)** and **Espresso (Android)**. * Collaborate with developers and PMs to align requirements and ensure quality throughout the software lifecycle. * Report testing results clearly and propose continuous improvements. * Share best practices and provide mentorship within the QA team. **Requirements – Must Have:** * Strong experience in web and mobile test automation. * Proficiency with **Playwright** for web automation. * Experience with **Postman** and API testing. * Mobile automation with **XCUITest (iOS)** and **Espresso (Android)**. * Knowledge of **JavaScript** for automation scripts. * Advanced English (B2\+/C1\) for daily communication in global teams. **Nice to Have:** * Experience with **Appium** (cross\-platform iOS/Android). * Experience with **Cypress** for web automation. * Knowledge of **Python** for scripting and test frameworks. **What We Offer:** * 100% remote, long\-term contract. * Participation in global projects with multicultural teams. * Stability and professional growth opportunities. * A collaborative environment where innovation and quality are top priorities.