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 and send us your CV!