Kelvin

Executed manual test cycles covering web and mobile apps, including TAP Air Portugal (Android), Headspace (iOS/Android), Qatar Airways Privilege Club (Web/iOS), HSE24 checkout (DACH region), Rossmann.de, Voloco, Audiobooks.com, and Apartment List. Identified, reproduced, and documented functional and Critical-severity defects, including booking-flow and seat map issues and an internal-error surface bug, with full reproduction steps and expected/actual results Performed end-to-end payment testing on banking and crypto platforms, covering transaction flows, error handling, and usability

Freelance QA Tester - TestIO GmbH - Remote, Germany

(2025-01)

• Executed manual test cycles covering web and mobile apps, including TAP Air Portugal (Android), Headspace (iOS/Android), Qatar Airways Privilege Club (Web/iOS), HSE24 checkout (DACH region), Rossmann.de, Voloco, Audiobooks.com, and Apartment List.
• Identified, reproduced, and documented functional and Critical-severity defects, including booking-flow and seat map issues and an internal-error surface bug, with full reproduction steps and expected/actual results
• Performed end-to-end payment testing on banking and crypto platforms, covering transaction flows, error handling, and usability
• Evaluated AI product outputs against expected performance criteria for clients including OpenAI and Meta
• Retested resolved defects and conducted regression passes following feature updates and bug fixes

Bachelor of Science - Petroleum Engineering - Kwame Nkrumah University of Science and Technology (2019-09 - 2023-11)