Eliezer Castillo

Executed smoke and regression test suites for release cycles, created and maintained BDD test scenarios in Gherkin, and performed manual testing of new features. Developed mobile automated tests with Appium and Java, simulated API responses with Charles Proxy, and built Claude-powered AI agents for test validation and repair.

Designed and maintained automated test scripts and frameworks using Selenium, Cypress, WebdriverIO, and Appium, and integrated them into CI/CD pipelines. Conducted REST API testing with Postman, performance testing with JMeter and Lighthouse, and reduced regression time by 40% and production defects by 27%.

Created and executed manual and automated test cases for web and mobile applications, performed functional, regression, and REST API testing with Postman, and documented defects in Jira. Built reusable automation scripts and regression test suites, and contributed to sprint planning and backlog grooming.

Completed an intensive QA training program focused on software testing fundamentals, agile methodologies, and automation principles. Built hands-on proficiency with Selenium, Cypress, and Postman, and developed foundational skills in API, functional, and regression testing.

Coordinated and supervised the collection, cleaning, and validation of survey and research data for national studies. Designed and programmed surveys, implemented data accuracy processes, managed databases, and generated reports for stakeholders.

Strengthened Mobile Financial Services operations through data analysis and reporting. Monitored KPIs, extracted and reconciled data from internal databases, and developed NPS reports based on customer feedback.

Bachelor's Degree in Computer Engineering from Universidad Centroamericana Jose Simeon Canas, completed in 2020.