Sebastian Stefan

Manual Tester

Warsaw Metropolitan Area

About

Experience

  • Manual Tester at Astek
    Apr 2025 - Present · 1 yr 3 mos

  • QA Tester at Lionbridge Poland
    May 2022 - Apr 2025 · 3 yrs

    As a Test Specialist, I'm responsible for conducting various tests of the mobile app on a daily basis. - managing a group of four testers; organizing work and setting priorities during the day - finding errors inside the application; reporting, re-testing, verifying, blocking and reopening them in Jira - conducting tests: exploratory, sanity, telemetry; as well as regression and smoke tests in TestRail - preparing documentation and creating test cases - preparing reports on tests performed during the day and providing feedback on encountered problems - close cooperation with an English-speaking, international team of developers and QA; regular meetings, retro meetings Technologies and tools: SQL, Atlassian Jira, Confluence, Miro, Splunk, Amazon Redshift, TestRail, MS Office, Windows, MacOS, Android, iOS

  • Intern/IT Assistant at MEGASTAR S.L.
    Sep 2021 - Oct 2021 · 2 mos

    - assembling and modernizing computers - installation of operating systems - configuring computer hardware, software and system - performing full computer security - adding computers to the domain - installation of structured cabling and connecting devices to the network