Senior QA Automation Engineer – Flutter (Mobile & Web)

Rehire; Castilla-La Mancha; On-site; EUR 43,000 - 62,000; Full time

Job summary

Rehire is partnering with an international technology company in Guadalajara, Mexico, to hire a Senior QA Automation Engineer. The role focuses on Flutter, Dart, and automated testing across mobile and web, with CI/CD integration and scalable testing solutions.

You will own automation frameworks, drive end-to-end testing, and collaborate with global teams to ensure release readiness in a fast-paced cloud-native environment.

Qualifications

• 5+ years of professional experience in Software Quality Engineering or Quality Assurance.
• At least 3 years of hands-on experience in automated UI and API testing for mobile and web applications.
• Strong experience developing test automation frameworks for Flutter applications.
• Hands-on programming experience with Dart.
• Experience with Flutter testing libraries such as flutter_test, integration_test, Flutter Driver, or similar frameworks.
• Strong knowledge of automated end-to-end, functional, smoke, and regression testing.
• Experience implementing and maintaining automated tests across iOS, Android, and Web.
• Experience configuring automated testing within CI/CD pipelines.
• Familiarity with GitHub Actions, Google Cloud Build, or equivalent CI/CD tools
• Experience working with cloud-based device testing environments such as Firebase Test Lab or similar platforms.
• Strong knowledge of REST and GraphQL API testing and automation.
• Experience creating mock services and validating backend integrations.
• Proficiency with Git, code reviews, and collaborative software development workflows
• Knowledge of Object-oriented programming and test automation design patterns, including Page Object Model (POM) and BDD.
• Strong understanding of clean code principles and maintainable automation architecture.
• Experience improving existing automation frameworks, refactoring legacy test suites, or taking ownership of established QA environments.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent technical communication and collaboration skills.

Responsibilities

• Design, develop, maintain, and scale automated testing frameworks for Flutter applications across iOS, Android, and Web.
• Build automated testing solutions using Dart, flutter_test, integration_test, Patrol, Appium, or similar technologies.
• Lead the technical transition of existing QA automation activities, documentation, and testing assets.
• Audit and refactor legacy automation scripts, eliminating flaky, redundant, or unreliable tests.
• Develop maintainable automated end-to-end, smoke, and regression testing suites.
• Integrate automated test execution into CI/CD pipelines, including GitHub Actions, Cloud Build, or similar platforms.
• Implement continuous testing processes to identify defects early in the development lifecycle.
• Collaborate with developers to improve testability, validate user stories, and establish effective shift-left testing practices.
• Configure and manage testing environments, emulators, simulators, and cloud device testing platforms.
• Execute automated tests across multiple devices, operating systems, and browser environments.
• Develop and maintain automated API tests to validate backend integrations and end-to-end workflows.
• Monitor testing metrics, including execution times, test coverage, pass rates, and test flakiness.
• Participate in code reviews and contribute to automation standards, clean code practices, and continuous improvement initiatives.
• Collaborate with international engineering teams and stakeholders to ensure testing quality and release readiness.

Skills

QA Experience

UI/API testing

Flutter frameworks

Dart

Flutter testing

E2E testing

Cross-platform testing

CI/CD

CI tools

Cloud testing

API testing

Mock services

Git & code reviews

POM/BDD

Clean code

Framework maintenance

Analytical skills

Communication

Tools

Flutter

Dart

flutter_test

integration_test

Flutter Driver

GitHub Actions

Google Cloud Build

Firebase Test Lab

Playwright

Selenium

BrowserStack

Sauce Labs

Job description

Role Overview

At Rehire, we are partnering with an international technology company specializing in cloud, data, and digital transformation in the search for a Senior QA Automation Engineer to join a cross-platform software development project.

We are looking for an experienced QA Automation professional with strong expertise in Flutter, Dart, automated testing frameworks, and CI/CD integration, capable of designing, building, and scaling reliable testing solutions across mobile and web applications.

The ideal candidate combines solid software engineering practices with hands-on automation experience, technical ownership, and the ability to improve existing testing frameworks while ensuring high-quality software releases.

Key Responsibilities

• Design, develop, maintain, and scale automated testing frameworks for Flutter applications across iOS, Android, and Web.

• Build automated testing solutions using Dart, flutter_test, integration_test, Patrol, Appium, or similar technologies.

• Lead the technical transition of existing QA automation activities, documentation, and testing assets.

• Audit and refactor legacy automation scripts, eliminating flaky, redundant, or unreliable tests.

• Develop maintainable automated end-to-end, smoke, and regression testing suites.

• Integrate automated test execution into CI/CD pipelines, including GitHub Actions, Cloud Build, or similar platforms.

• Implement continuous testing processes to identify defects early in the development lifecycle.

• Collaborate with developers to improve testability, validate user stories, and establish effective shift-left testing practices.

• Configure and manage testing environments, emulators, simulators, and cloud device testing platforms.

• Execute automated tests across multiple devices, operating systems, and browser environments.

• Develop and maintain automated API tests to validate backend integrations and end-to-end workflows.

• Monitor testing metrics, including execution times, test coverage, pass rates, and test flakiness.

• Participate in code reviews and contribute to automation standards, clean code practices, and continuous improvement initiatives.

• Collaborate with international engineering teams and stakeholders to ensure testing quality and release readiness.

Requirements

• 5+ years of professional experience in Software Quality Engineering or Quality Assurance.

• At least 3 years of hands-on experience in automated UI and API testing for mobile and web applications.

• Strong experience developing test automation frameworks for Flutter applications.

• Hands-on programming experience with Dart.

• Experience with Flutter testing libraries such as flutter_test, integration_test, Flutter Driver, or similar frameworks.

• Strong knowledge of automated end-to-end, functional, smoke, and regression testing.

• Experience implementing and maintaining automated tests across iOS, Android, and Web.

• Experience configuring automated testing within CI/CD pipelines.

• Familiarity with GitHub Actions, Google Cloud Build, or equivalent CI/CD tools.

• Experience working with cloud-based device testing environments such as Firebase Test Lab or similar platforms.

• Strong knowledge of REST and GraphQL API testing and automation.

• Experience creating mock services and validating backend integrations.

• Proficiency with Git, code reviews, and collaborative software development workflows.

• Knowledge of Object-oriented programming and test automation design patterns, including Page Object Model (POM) and BDD.

• Strong understanding of clean code principles and maintainable automation architecture.

• Experience improving existing automation frameworks, refactoring legacy test suites, or taking ownership of established QA environments.

• Strong analytical, troubleshooting, and problem-solving skills.

• Excellent technical communication and collaboration skills.

• Availability to work 100% onsite in Guadalajara, Mexico, five days per week.

Nice to have

• Experience with Patrol, Appium, or other cross-platform mobile automation tools.

• Familiarity with Playwright or Selenium for cross-browser testing of Flutter Web applications.

• Experience with BrowserStack, Sauce Labs, or other cloud device testing platforms.

• Knowledge of mobile application performance testing and optimization.

• Experience profiling memory leaks, frame rates, and application performance in Flutter.

• Experience building scalable continuous testing strategies for complex software products.

• Familiarity with Agile development methodologies and shift-left quality engineering practices.

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.