Senior Manual QA Engineer – Flutter (Mobile & Web)

Role Overview At Rehire, we are partnering with an international technology company specializing in digital transformation and software solutions in the search for a Senior Manual QA Engineer to join a cross-platform application development project. We are looking for an experienced QA professional with strong expertise in manual testing, Flutter applications, and mobile/web quality assurance, capable of taking ownership of testing processes, identifying coverage gaps, and ensuring high-quality software releases. The ideal candidate combines hands-on testing experience with strong analytical skills, attention to detail, and the ability to establish reliable QA processes across iOS, Android, and Web environments. Key Responsibilities: - Lead the transition and takeover of QA activities, documentation, and test cases from an existing vendor team. - Design, maintain, and execute comprehensive manual test plans and test scenarios for Flutter applications. - Perform functional, regression, exploratory, usability, and end-to-end testing across iOS, Android, and Web. - Identify gaps in existing test coverage and implement improvements based on application risks and business priorities. - Conduct cross-browser and multi-device testing using physical devices, emulators, and simulators. - Identify, document, prioritize, and track defects using issue-tracking tools such as Jira or Buganizer. - Provide detailed bug reports, including reproduction steps, logs, screenshots, and relevant technical information. - Collaborate with developers and UX designers to clarify requirements, define acceptance criteria, and validate functionality. - Establish standardized testing procedures, reusable test datasets, and structured regression suites. - Support release validation and ensure critical defects are identified before production deployments. - Participate in Agile ceremonies and contribute to continuous improvements in QA processes. - Ensure testing activities remain aligned with development timelines and quality standards. Requirements: - 4+ years of professional experience in Software Quality Assurance, primarily focused on mobile and web applications. - Hands-on experience performing manual testing of Flutter applications across iOS, Android, and Web. - Strong understanding of Flutter-specific behaviors, widget states, layouts, and platform differences. - Experience designing and executing test cases, test plans, and regression testing suites. - Strong experience with functional, exploratory, usability, and cross-platform testing. - Hands-on experience testing applications on physical iOS and Android devices. - Experience working with emulators, simulators, and multiple web browsers, including Chrome, Safari, Firefox, and Edge. - Familiarity with API testing tools such as Postman, Bruno, or curl. - Experience using mobile debugging tools such as Android Studio, Xcode, or Flutter DevTools. - Familiarity with browser developer tools and debugging consoles. - Experience managing defects through tools such as Jira, Buganizer, or similar platforms. - Experience taking ownership of QA activities in existing projects, including legacy environments or vendor transitions. - Strong knowledge of Agile/Scrum methodologies, SDLC, STLC, and shift-left testing practices. - Excellent analytical, troubleshooting, and problem-solving skills. - Strong technical communication and documentation skills. - Availability to work 100% onsite in Guadalajara, Mexico, five days per week. Nice to have: - Knowledge of accessibility testing (a11y) standards. - Familiarity with internationalization (i18n) testing. - Basic understanding of Dart to support debugging and root-cause analysis. - Experience improving QA processes and test coverage in complex software environments. - Familiarity with risk-based testing strategies and release quality metrics. About the Position: - Location: Mexico, Guadalajara. - Work Model: 100% Onsite. - Engagement Type: Contractor. - Contract Duration: 12 months. - Opportunity to work on international cloud security and AI-driven cybersecurity initiatives. - Collaboration with senior engineers, architects, and distributed technical teams. - Exposure to AI security agents, security automation, and modern cloud environments. If you meet the requirements and are interested in this exciting opportunity, apply at www.rehire.ar/jobs http://www.rehire.ar/jobs and send us your CV!