Liber Castro

I’m a Senior QA Tester with over 7 years of technical experience across Web and Mobile products. I focus on ensuring software quality through functional, regression, and accessibility (WCAG) testing, while keeping execution fast, reliable, and actionable for Agile teams.

At CodigoDelSur (May 2022–Present), I lead end-to-end functional and regression testing for high-performance web and mobile experiences. I also leverage Generative AI to architect test plans, generate complex edge-case scenarios, and create high-fidelity synthetic data to strengthen coverage—then use AI-aided coding to accelerate Cypress automation scripts.

I validate complex data tracking and marketing automation flows with Amplitude and Braze, ensuring high-precision analytics and campaign reliability. I also manage the full bug reporting and tracking lifecycle within Agile squads, minimizing technical debt and streamlining software delivery.

Previously at Intermedia (Nov 2020–May 2022), I performed exhaustive accessibility audits using Axe, CCA, and NVDA to ensure strict WCAG 2.1 compliance, and I authored and executed test plans to mitigate risk across fast-paced sprints. Earlier at TCS (Jul 2018–Nov 2020), I delivered enterprise-scale functional and regression testing and maintained functional test suites to improve long-term regression efficiency.