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!