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joshuazajac

Joshua Zajac

@joshuazajac

Mobile App QA Tester Ensuring 5Star iOS and Android Launches

Poland
Polish, English, German
About me
Hi there! I am a dedicated Mobile App QA Tester helping iOS and Android developers launch flawless, 5-star rated apps on the App Store and Google Play. I specialize in real-device functional testing, UI/UX evaluation, crash detection, performance checks, and usability feedback across smartphones and tablets. Every test comes with a clear, professional bug report including annotated screenshots, screen recordings, and actionable fix recommendations. Your app deserves a perfect launch. Let's make sure it's bug-free and ready for your users!... Read more

Skills

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joshuazajac
Joshua Zajac
Offline • 
Average response time: 1 hour

See my services

Software Testing
I will perform mobile app QA testing and report bugs on ios and android
From$15 / projectMore details
Software Testing
I will perform manual website QA testing and usability review
From$15 / projectMore details

Work experience

GN

Mobile App QA and Usability Specialist

GN • Part-time

Nov 2025 - Jun 2026 • 7 mos

I conduct comprehensive Quality Assurance and manual functional testing for mobile applications across physical iOS and Android devices. Leveraging my computer science background, I execute rigorous test cases covering core functional flows, UI/UX responsiveness, edge-case validation, crash detection, network throttling, and permission handling. I specialize in preparing mobile apps for seamless TestFlight and Google Play Store launches, identifying critical bugs before public release. Every testing cycle culminates in an industry-standard QA report containing structured steps to reproduce, expected vs. actual outcomes, bug severity classification, annotated screenshots, and video screen recordings to help developers patch issues quickly.