Lionbridge

Manual QA Tester

We are seeking a detail-oriented and experienced Manual QA Tester to join our team in Mexico City. This role is critical to ensuring the functionality, performance, and user experience of our web applications. The ideal candidate has a strong background in manual testing of both front-end and back-end systems, thrives in Agile environments, and can communicate effectively across teams to drive quality and reliability.

What You Will Do

• Test feature tickets by analyzing requirements, developing test cases, and verifying acceptance criteria
• Collaborate with product managers and engineers to clarify use cases and workflows
• Create detailed and easy-to-read defect reports for developers
• Manually test applications across desktop and mobile browsers, ensuring usability, accuracy, and performance
• Contribute to QA documentation for manual smoke and regression testing
• Communicate test progress and blockers with team leads to support sprint goals
• Demonstrate a deep understanding of modern browser and web technologies

To Be Successful You Will Have

• 5+ years of experience in manual testing for complex web applications (front-end and back-end)
• 5+ years of experience working within Agile/sprint cycles
• Experience testing API calls using Postman, Insomnia, or cURL
• Strong defect documentation skills with attention to clarity and detail
• Excellent written and verbal communication in English
• Proficiency in Jira, Confluence, and collaboration tools (e.g., Teams or Slack)
• Experience with locale and time zone testing
• Ability to run basic SQL queries and interpret JSON data
• Familiarity with Chrome Developer Tools for request analysis
• Experience debugging with tools like Splunk or DataDog

In Return You Can Expect

• A valuable foot in the door within a competitive industry, providing exposure to big-name clients and projects
• A collaborative and agile working environment
• Opportunities for growth and development within a global organization

About Us

Lionbridge partners with brands to break barriers and build bridges all over the world. For over 25 years, we have helped companies connect with their global customers and employees by delivering translation and localization solutions in 350+ languages. Through our world-class platform, we orchestrate a network of passionate experts across the globe who partner with brands to create culturally rich experiences. Relentless in our love of linguistics, we use the best of human and machine intelligence to forge understanding that resonates with our customers’ clients. Based in Waltham, Massachusetts, Lionbridge maintains solution centers in 24 countries.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.

Breaking Barriers. Building Bridges.