Олександр

OLEKSANDR BUBELA
QA ENGINEER | MANUAL TESTING | WEB • MOBILE • API
Cherkasy, Ukraine • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • LinkedIn • Telegram
SUMMARY
QA Engineer with 5+ years of experience in web and mobile testing. Experienced in functional, regression, integration, UI, exploratory, cross-browser and API
testing. Strong in defect investigation, test documentation and release validation. Experienced with Postman, Swagger, Jira, TestRail, BrowserStack and
DevTools.
TECHNICAL SKILLS
Testing: Functional, Regression, Integration, End-to-End, Exploratory, UI, Cross-browser, Mobile, API
Tools: Postman, Swagger, Jira, TestRail, Confluence, BrowserStack, Chrome DevTools, Fiddler, Charles Proxy
Database: DBeaver, SQL basics
Processes: SDLC/STLC, Agile, Scrum, Test Documentation, Defect Tracking
WORK EXPERIENCE
InsulaLabs | 2025 – 2026
Quality Assurance Engineer
• Performed manual testing of web applications: functional, regression, integration, UI, exploratory and cross-browser testing.
• Tested CMS workflows, dynamic content, categories, media, configurations and localization.
• Investigated UI, functional, content and responsive issues and provided detailed reproduction steps and evidence.
• Performed API testing with Postman and Swagger, validating frontend and backend data consistency.
• Verified releases across environments and identified defects before production.
• Collaborated with developers, designers and product teams throughout development and release cycles.
Achievements
• Contributed to launching a new brand from the ground up, helping establish product quality from early development through release.
• Identified critical defects before production and improved coverage by adding scenarios for complex and dynamic functionality.
Trendcore | 2024 – 2025
Quality Assurance Engineer
• Performed functional, regression, integration, UI and end-to-end testing of web applications.
• Created and maintained test documentation and adapted test coverage to product changes.
• Investigated defects using Chrome DevTools and collaborated with developers on resolution.
• Performed testing from early development stages through release to reduce production risks.
TransferRoom | 2023 – 2024
Quality Assurance Engineer
• Performed end-to-end functional, regression, integration, UI and API testing.
• Tested iOS and Android applications across devices and platforms.
• Used Postman, Swagger and Chrome DevTools for API validation and defect investigation.
• Collaborated with developers and product teams to resolve defects before release.
Achievements
• Identified and helped resolve a critical defect that saved the company up to £5,000 annually.
Andersen | 2020 – 2023
Quality Assurance Engineer
• Created and maintained test cases, checklists and bug reports.
• Performed API testing and log analysis.
• Reported and tracked defects through resolution.
• Prepared QA reports and supported release planning.
• Mentored junior QA engineers; 85% of trainees successfully joined active projects.
EDUCATION & LANGUAGES
Cherkasy Chernobyl Heroes Institute of Fire Safety — Master's Degree, 2006–2011
English — Intermediate Ukrainian — Native