Kate Reshetniak

QA Engineer working on production web and mobile applications including SaaS platforms, CRM systems and AI-driven features. Worked as a primary (solo) QA across multiple projects, fully owning quality from requirements analysis and exploratory testing to release readiness and post-release validation. Built and maintained 5000+ test cases across projects, increasing test coverage and significantly reducing regression effort.

Strong at identifying high-risk issues early, preventing defects from reaching production and impacting real users. Hands-on experience testing AI-powered functionality (text, voice and avatar-based chat features), with a strong focus on edge cases, context handling and safe behaviour, while keeping final validation.

QA Engineer at Hygge Software (2025-04 – 2026-07)

• Owned end-to-end manual testing of production web applications and admin panels with complex business logic
• Ensured release readiness across environments, including pre- and post-release validation
• Improved product stability by detecting high-risk issues early through deep exploratory testing
• Tested AI-powered chat functionality (text, voice, avatar), identifying issues with context retention, mode switching and voice handling
• Designed and maintained test plans, checklists and test cases in QASE, improving regression reliability
• Produced structured pre- and post-release reports in Notion, increasing visibility of quality status
• Validated UI/UX accuracy against Figma designs, preventing design-to-implementation gaps
• Performed accessibility testing aligned with WCAG using WAVE and screen readers
• Validated API behaviour (Postman, Swagger) and backend data consistency using PostgreSQL and MySQL
• Improved cross-platform stability through cross-browser and cross-device testing (BrowserStack, real devices)
• Supported basic automation (Playwright) and basic performance testing (Locust)
• Collaborated closely with developers and PMs acting as a quality gate for releases

QA Tester at IT Dev Group (2020-03 – 2025-02)

• Acted as the sole QA across multiple web and mobile projects, ensuring consistent quality delivery
• Created and maintained test cases in TestRail, significantly reducing regression testing time
• Led testing for SaaS platforms and CRM systems, ensuring functional correctness across frequent releases
• Tested booking and reservation systems with complex availability logic, pricing rules and user scenarios
• Ensured stable admin workflows by testing ModX Revolution-based admin panels
• Prevented UI regressions through manual UI/UX validation using Figma and DevTools
• Ensured cross-browser consistency across Chrome, Firefox, Safari and Edge
• Validated third-party integrations (payments, invoicing, email notifications)
• Performed API testing to detect backend inconsistencies early
• Tested document management systems with electronic signatures and compliance requirements
• Verified reports, calculations and cost estimators, validating formulas, boundary values and rounding rules
• Tested AI-powered chatbot functionality, identifying logical gaps and conversation issues
• Worked within Agile teams, managing tasks in Jira and Trello and coordinating closely with developers

Manual QA Tester at Just Ltd. (2017-08 – 2020-01)

• Worked independently as a QA tester on a consumer-facing social networking platform
• Performed manual exploratory, functional and regression testing of core user flows
• Tested key features including registration, authentication, profile creation and user interactions
• Conducted cross-browser testing to ensure consistent behaviour across supported browsers
• Performed mobile testing and validated UI consistency across different screen sizes and devices
• Tested localization and language-specific behaviour
• Validated UI/UX against product requirements and design expectations
• Identified, documented and tracked defects with clear reproduction steps
• Collaborated closely with developers to verify fixes and improve overall product quality

BSc in Engineering – Kharkiv National Automobile and Highway University