Sebastian Alvarez

I’m a bilingual QA Tester and QA Analyst with 3 years of startup experience across manual QA, release validation, SQL/data checks, process documentation, and product feedback. At Metatate, I built and maintained a feature-by-feature QA knowledge base with 1,500+ test cases, validated frontend and backend workflows across QA and production releases, reported hundreds of bugs, and supported SOC2 readiness documentation. Because Metatate works in privacy compliance, much of my testing involved validating policy-based data workflows, comparing original Snowflake-sourced datasets against transformed workflow datasets using SQL, DBeaver, and TablePlus. I’m also expanding into QA automation and QA tooling. I built Playwright Sentinel, an open-source TypeScript/Playwright CLI that records test history, calculates flakiness scores, generates terminal health reports, and supports threshold-based checks for noisy test suites. What I bring beyond test execution: I think in product workflows, communicate clearly with engineering teams, document complex systems, and turn quality issues into actionable product feedback. I’m especially strong in remote startup environments where QA needs to move fast, stay organized, and help the team make better release decisions. Open to remote QA Tester, QA Analyst, Software QA Tester, Product QA, Junior QA Engineer, and Junior Automation QA roles.