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Stefan Mitkovic

@stefanmitkovic

I build reliable UI, API, and database test automation for web products.

Serbia
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At Cake.com, I maintain and expand a regression suite of more than 11,000 tests, using TypeScript and Cypress for UI and API testing. I improve flaky-test stability, increase coverage, oversee release validation, and help deliver reliable staging and production releases.

Previously at SkySlope, I raised regression passing results from 10% to more than 90%, built TypeScript/Playwright automation, and implemented Codefresh jobs for Smoke and Regression testing. I also mentored automation testers and supported multiple releases per sprint.

Across REEF Technology, Visa, CareFirst BCBS, and Ellucian, I've developed automated and manual testing for browser applications, APIs, and databases. My work includes Java, Selenium, Cucumber, JDBC, SQL, REST Assured, Jenkins, Maven, and Page Object Model frameworks.

I'm focused on preventing defects through practical test strategy, stable automation, clear reporting, and close collaboration with product, engineering, operations, and QA teams.

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