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Senior Manual QA Engineer – Flutter (Mobile & Web)

Rehire

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.

Responsibilities

  • 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.
  • 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.
  • internationalization (i18n)
  • to support debugging and root-cause analysis.

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.

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
  • testing.
  • Basic understanding of

Dart

  • Experience improving QA processes and test coverage in complex software environments.
  • Familiarity with risk-based testing strategies and release quality metrics.

Preferred

  • accessibility testing (a11y)
  • standards.

Benefits

  • Collaboration with senior engineers, architects, and distributed technical teams.

Nice to have

Knowledge of

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.
  • 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!