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!