Komatsu is HIRING A

Senior QA Engineer (QA Engineer III)

📍 Brazil 🌐 On-SiteFull Time
POSTED October 19, 2025

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The Company

We are a global community of engineers, technologists, and QA professionals committed to revolutionizing mining with innovative, high-impact software solutions.

Job Purpose

Senior QA Engineer software QA background (not hardware)

Ideal candidates will take ownership of product quality, collaborate closely with development and infrastructure teams, and play a key role in ensuring successful software releases.

Key Responsibilities

  • Lead the planning and execution ofmanual and automated functional, regression, exploratory, and system-level testsacross the software lifecycle.
  • Develop, maintain, and optimize automated UI and API test suites using tools like Selenium, Postman, JMeter, and gRPC.
  • Integrate automated test execution into CI/CD pipelines and actively monitor stability and performance.
  • Design and execute complex manual test scenarios where automation is not feasible, including ad hoc, usability, and integration testing.
  • Collaborate with cross-functional teams to ensure test environments are stable, scalable, and production-representative.
  • Document, manage, and triage defects using Azure DevOps, ensuring clarity and timely resolution.
  • Act as a quality owner for key product features, ensuring traceability from requirements to release.
  • Build and maintain a scalable, reusable automation test library and produce meaningful test coverage reports.
  • Mentor junior QA engineers in both manual and automated test design, process, and tooling.
  • Identify opportunities for process improvement and propose tools or scripts to enhance QA efficiency and accuracy.

Required Skills

  • Bachelor’s degree in Computer Science, Software Engineering, or a related field (Master’s preferred).
  • Minimum 3 years of experience in software QA, including 1–2 years in a senior or lead role.
  • Hands-on experience with:
  • Strong understanding of Agile/Scrum methodologies and CI/CD practices.
  • Advanced English (written and verbal) for global team collaboration.
  • Strong analytical and problem-solving skills.
  • Demonstrated experience mentoring QA engineers and improving QA processes.
  • Willingness to travel up to 10% as required.

Preferred Qualifications

  • Experience testing microservices, distributed systems, or cloud-native applications.
  • Familiarity with BDD/TDD practices.
  • Proficiency with TestNG, JUnit, or Cucumber.
  • Background in performance, load, security, or contract testing.
  • Familiarity with version control tools (e.g., Git) and infrastructure-as-code practices.
  • Previous experience within the mining industry.

Please mention you found this job on TestDev Jobs. It helps us get more people to hire on our site. Thanks and good luck!