Stefan Nikolic

Developed Playwright/TypeScript automated tests for LLM model rental flows and GPU-related user journeys. Performed manual and automated testing of LLM chatbot functionality, validating prompt handling and response quality.

Developed and maintained Playwright E2E automation frameworks with focus on cross-browser testing and stable regression coverage. Designed CI/CD pipelines using Jenkins and GitHub Actions, and executed API and backend tests.

First QA member responsible for organizing the QA team and establishing QA processes from the ground up. Reduced regression testing time by 60% through implementation of Cypress E2E suite and mentored junior QA engineers.

Developed and executed test scripts using Cypress Framework with TypeScript and Angular. Conducted application and system tests, authored manual test cases, and performed exploratory and regression testing.

Managed end-to-end test processes including test case design and execution, and defect severity and priority management. Participated in Business Acceptance Testing and System Integration Testing with the P&G team.

Proficient in manual and automated testing with experience in Agile and Waterfall methodologies. Developed automated test cases using Java and Selenium WebDriver, and wrote SQL queries for data validation.

Bachelor Engineer of Information Technology degree from Metropolitan University in Belgrade, Serbia.