Олена

Olena Koshliakova QA Engineer
Contact Information
📍 Varna, Bulgaria | 📞 [open contact info](look above in the "contact info" section)(telegram) | ✉️ [open contact info](look above in the "contact info" section) | 🌐 LinkedIn
Summary
QA Engineer with 9+ years of experience in manual and functional testing of complex, high-traffic digital products
across mobile, desktop, and web platforms. Proven track record in delivery of both in-development projects and live-ops
services. Skilled in optimizing QA processes, mentoring team members, and investigating complex tech issues.

Skills
- Manual Testing: Functional, Regression, Smoke, API Testing, Exploratory, Graphics, Audio, UI/UX, A/B Testing, Live-ops
(Events/Offers) and Monetization, Accessibility
- Platforms: iOS, Android, Amazon, macOS, Windows, Web, Steam
- Web & API Testing: Swagger, Postman, Charles Proxy.
- Test Documentation: Test Cases, Checklists, Coverage Matrices, Test Suites, Bug Reports, Test Plans
- Test Management & Collaboration: JIRA, TestRail, Confluence, Miro
- Version Control & CI/CD: SVN, Git, TeamCity, Bamboo
- Debugging & Analytics Xcode Logs, iTunes, iMazing, 3uTools, Logcat (Android Studio), DebugView, Browser DevTools,
Firebase (Crash & Analytics), Visual Studio Debugging Tools, Unity Editor
- Programming & Scripting : Python scripting for QA tools and workflow improvements, SQL, HTML, CSS, XML/JSON data
validation
- Languages: Russian (native), Ukrainian (native), English (Intermediate B1), Bulgarian (Intermediate B1 )

Work Experience
Senior QA Engineer | G5 Entertainment 02/2017 – 07/2026
- Successfully tested and supported multiple high-traffic B2C cross-platform mobile and desktop applications through
entire product lifecycles and live-ops phases.
- Reviewed and clarified specifications, identified inconsistencies and gaps at early stages
- Performed functional, regression, exploratory, smoke, and release testing of core features, UI/UX, user events,
monetization systems, and application updates across iOS, Android, and desktop platforms.
- Created and maintained test documentation, including test cases, checklists, coverage matrices and test suites.
- Coordinated QA activities within the team, including task distribution, test coverage planning and ownership of testing
for assigned platforms.
- Investigated and reproduced player-reported issues, analyzed logs and collaborated with developers and support teams
to resolve critical problems. .
- Mentored new QA engineers by supporting onboarding, sharing project knowledge and helping them adapt to team
processes. .

Achievements
- Developed Python script (with the help of ChatGPT) adopted by QA teams, which reduced verification time and
simplified routine checks.
- Created personal and team Python scripts to support balance checks and log sorting.

Education
Kharkiv National University of Radio Electronics (2009 – 2014)
Master’s Degree, Applied Mathematics and Management
Master’s Degree, Media Systems and Technologies