Developed and maintained automated test suites using JavaScript, WebdriverIO, Mocha, Chai, and SuperTest, increasing automation coverage of critical business logic. Investigated and resolved automated test failures by identifying whether issues were caused by product defects, test environments, test data, or unstable automated tests. Validated user stories by analyzing the requirements, designing comprehensive test cases, and executing functional, exploratory, and API testing. Participated in Agile ceremonies to assess user stories and identify testing risks. Acted as QA Regression Coordinator on a rotational basis. Supported new team members during onboarding and provided guidance on testing processes and QA best practices.

Built and maintained test automation suites using Python, Selenium, Behave, JavaScript, TestCafe, and Cucumber. Designed and automated test data creation and data validation scripts. Validated user stories by executing UI, API, regression, smoke, sanity, exploratory, scalability and performance testing. Managed full defect lifecycle end-to-end, from root-cause analysis to bug triage and fix validation. Acted as QA Technical Lead, authoring test plans and defining testing strategies; coordinated sprint testing activities, mentored QA engineers, and onboarded new hires.

Worked as a Full Stack Developer responsible for analysis, maintenance, support, and development of desktop and web applications using .NET technologies (C#, ASP.NET). Tested implemented features, documented testing results, and supported production deployments.

Worked as a Full Stack Developer responsible for analyzing, maintaining, supporting, and developing ERP applications using Delphi technology. Performed feature validation, debugging, production support, and deployment activities.

Authored test plans and defined test coverage and test strategy based on product requirements. Configured and maintained test environments across multiple scenarios and executed functional, regression, smoke, and sanity testing. Managed full defect lifecycle, detecting failures in the development stage, supporting bug reproduction, and performing bug triage.

Developed and maintained web and desktop applications using Java, .NET, PHP, and JavaScript. Managed IT infrastructure, networks, user accounts, technical support, and system maintenance in corporate environments.