yosuancrespo

Results-driven Senior QA Engineer with a Computer Science Engineering background and 17 years of proven expertise in both manual and automated testing across web, mobile (iOS, Android), API and blockchain platforms. Skilled in architecting end-to-end test strategies, leveraging JavaScript, Python, Java, SQL and industry-leading frameworks (Cypress, Selenium, Appium, Playwright), within Agile (Scrum, Kanban) environments and CI/CD pipelines, consistently reducing critical defects and accelerating release cycles. Bilingual (English-Spanish) and collaborative leader who has mentored high-performance QA teams, driven TDD/BDD adoption and stepped into Project Manager roles to align quality initiatives with broader business objectives. Passionate about continuous improvement, user-centric quality and delivering secure, scalable solution from traditional enterprise applications to cutting-edge Web3 and DeFi ecosystems. Open to various opportunities (including full-time, part-time and contract roles); for contract engagements, services can optionally be provided via his US-based LLC if required.