Senior QA Automation Tester

We are looking for a Senior QA Tester Engineer to join our team and support the quality and reliability of a cross-media measurement platform developed in partnership with industry leaders such as Google, Meta, TikTok, and Amazon. This role focuses on test automation, API testing, and data validation within a modern API-first and cloud-native architecture. The engineer will work closely with development teams to ensure platform reliability and embed quality into the CI/CD pipeline. Please find the details below:LocationLisbon, Braga, or Coimbra (hybrid)Need to go to the office 2 times a week.Candidates must be living in Portugal.Industry: International Marketing & Media Industry OrganizationLanguage RequirementsMinimum English level: B2 (fluency required)Tech StackLanguages & Frameworks: Python, JavaScript, TypeScript, NestJSAutomation & Testing: Playwright, Cypress, Puppeteer, Supertest, API testing, Test automation frameworksData & Databases: SQL, data validation, analytics pipelinesCloud & DevOps: Google Cloud Platform (GCP), Docker, Kubernetes, CI/CD (Cloud Build)Other / Nice to Have: Generative AI tools for testing, API-first architectures, MicroservicesKey Responsibilities:Design, develop, and maintain automated test suites to ensure strong regression coverage.Implement API-level testing (contract, integration, and component testing) for microservices and service layers.Develop automated checks to validate complex data pipelines and ensure the accuracy of measurement outputs.Maintain and improve the automation ecosystem using tools such as Playwright, Supertest (NestJS), and GCP Cloud Build.Collaborate with software engineers to integrate testing into development lifecycle and CI/CD workflows.Monitor and improve quality metrics such as test stability, execution time, and coverage.Required Skills:Strong experience with test automation frameworks for web applications and distributed systems.Solid experience testing RESTful APIs and microservices.Hands-on experience with Playwright, Cypress, Puppeteer, or similar testing tools.Strong programming skills in JavaScript or TypeScript.Good knowledge of SQL and experience validating data-driven platforms.Experience integrating automated tests into CI/CD pipelines.Experience working with containerized environments.Nice to Have:Experience with Google Cloud Platform (GCP) or other cloud environments.Experience testing data pipelines or analytics platforms.Exposure to Generative AI tools for test generation or synthetic data creation.Experience contributing to open-source projects or familiarity with WFA standards.