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YURII LEONENKO
MIDDLE QA ENGINEER
Quality Assurance Engineer with hands-on experience in game and
software testing. Focused on ensuring product stability through structured
testing and practical analysis of complex systems.
Comfortable working in technical environments and collaborating with
development teams to support product quality across different stages of
development.
Interested in systems-level understanding of software, including
gameplay mechanics, AI behavior, and interactive applications.

WORK EXPERIENCE
Company - Confidential Product Company (NDA)
07.05.2024 - 15.06.2026

Ukraine, Kyiv • Managed the complete QA process across multiple projects, acting as the
primary QA engineer from early development stages through successful
delivery and release validation.
[open contact info](look above in the "contact info" section)
• Created and maintained comprehensive test documentation, including
test plans, test cases, checklists, regression suites, test reports, and
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automation scenarios.
• Designed testing strategies and validation approaches for complex
GitHub
software products across desktop, mobile, VR, and web-based
environments.
Facebook
• Collaborated closely with developers, designers, and technical teams to
verify functionality, investigate defects, and ensure product quality
HARD SKILLS throughout the development lifecycle.
Manual Testing (Functional, • Performed functional, regression, integration, exploratory, and user
Regression, Integration, acceptance testing across multiple platforms and system architectures.
Exploratory) • Developed and maintained automated API and functional test scenarios
Test Automation (C#, Python, using C# to support regression coverage and improve testing efficiency.
API) • Conducted client-server, integration, and data synchronization testing,
Client–Server Architecture validating communication between application components and backend
REST API Testing (Postman, services.
Swagger) • Validated complex business logic, simulation systems, AI-driven features,
SQL & Database Validation real-time interactions, and interconnected workflows, including edge-case
Data Synchronization Testing and negative-scenario testing.
DevTools (Network, Console, • Performed API validation, log analysis, database verification, and root-
Application) cause investigation to identify and isolate defects efficiently.
HTTP/HTTPS & Authentication • Participated in web, mobile, desktop, and VR product testing, including
Root Cause Analysis functionality validation, usability testing, performance analysis, and
CI/CD Fundamentals hardware/software integration.
Git • Utilized AI-assisted tools and workflows to accelerate test design, defect
Jira & TestRail investigation, documentation, and quality assurance activities.
Test Documentation & Bug • Supported onboarding of new team members and shared testing
Reporting practices, workflows, and product knowledge within the QA process.
• Performed API testing and request/response validation, ensuring correct
SOFT SKILLS data exchange between frontend and backend services.
• Executed database verification using SQL queries to validate data
Analytical Thinking integrity, business rules, and synchronization across system components.
Attention to Detail • Investigated complex defects through log analysis, reproduction scenario
Problem Solving creation, and root-cause identification.
Responsibility • Participated in release validation activities, including smoke testing,
Proactivity regression testing, and production readiness verification.
Effective Communication • Worked with client-server architectures, validating data consistency,
Adaptability state synchronization, and system behavior under various conditions.
• Collaborated with cross-functional teams to analyze requirements,
LANGUAGES clarify expected behavior, and improve product quality before release.

English - Intermediate
Ukrainian - Native EDUCATION
Russian - Native
NAU College of Engineering and Management
Software engineer
Secondary education
Software engineering
09.2018 - 07.2022 (3 years 10 months)