Юліан

Yulian Tkachenko

Warsaw, Poland [відкрити контакти](див. вище в блоці «контактна інформація») LinkedIn

QA Engineer with 4 years of commercial experience in manual software testing, progressing from QA

Tester to Test Lead. Experienced in analyzing requirements, designing test cases, functional and regression

testing, defect investigation, and test documentation. Strong background in Agile/Scrum environments and

cross-functional collaboration with developers, project managers, and other stakeholders. Experienced in

coordinating QA activities and teams across multiple concurrent projects.

Experience

Lionbridge Games

Test Lead May 2025 - Present Warsaw

Lead QA teams of 8–30 testers across multiple concurrent software projects.

Analyze requirements and translate them into structured test plans, test cases, and testing activities.

Plan and coordinate functional, regression, and release testing across multiple builds and platforms.

Review, triage, and prioritize defects based on severity, impact, and product risk.

Investigate complex issues, collaborate with developers, and verify fixes through retesting and

regression testing.

Work closely with developers, project managers, QA teams, and clients to clarify requirements and

resolve quality issues.

Communicate testing progress, risks, blockers, and quality status throughout the development cycle.

Identify risks and recommend practical adjustments to scope, priorities, or schedules when required.

Prepare test documentation, daily status updates, test reports, and milestone reports.

Coordinate workload and task allocation based on project priorities, deadlines, and team capacity.

Mentor and supervise testers, provide feedback, conduct performance reviews, and support

professional development.

Senior QA Tester Dec. 2024 - Apr. 2025 Warsaw

Performed manual functional, regression, integration, and release testing across complex software

systems.

Analyzed requirements and created structured test cases covering functional and edge-case scenarios.

Investigated complex defects and collaborated with developers to reproduce issues and verify fixes.

Tested UI behavior, system logic, integrations, and complex user flows.

Created clear and concise defect reports with reproduction steps, expected results, and actual results.

Reviewed tester reports for accuracy and completeness, reducing duplicate and invalid issues by 25%.

Supported test planning, task coordination, progress tracking, and daily QA reporting.

Used Jira and TestRail to document, track, prioritize, and verify defects throughout development.

Onboarded and mentored junior testers, improving onboarding efficiency by 20%.

QA Tester Sep. 2022 - Nov. 2024 Warsaw

Executed manual functional and regression testing throughout the software development lifecycle.

Reviewed requirements and prepared and executed test cases for new and existing functionality.

Tested complex user flows, UI behavior, system states, and feature interactions.

Identified, documented, tracked, and verified defects using Jira and TestRail.

Investigated issues and provided developers with clear reproduction steps and expected behavior.

Performed regression testing after fixes and validated functionality across new builds.

Collaborated with QA and development teams within Agile development cycles.

Freelance
Android Developer Apr. 202 1 - Jul. 2022 Warsaw

Developed mobile applications end-to-end, from requirements analysis and UI design through

implementation, debugging, and release.

Worked with application logic, data handling, UI systems, and feature requirements.

Investigated and resolved software issues during development and debugging.

Worked directly with client requirements and translated them into functional application features.

Ed ucation
Engineer Degree in Information and Communication Technology Oct. 20 19 - Feb. 2024 Warsaw

Vistula University, Warsaw

S kills
QA & Testing: Manual Testing, Functional Testing, Regression Testing, Integration Testing, Retesting,
Test Cases, Checklists, Test Documentation, Defect Reporting, Defect Triage, Test Planning, Test

Reporting, Risk Assessment, Release Testin g

Methodologies: Agile, Scrum, Software Development Life Cycle (SDLC)
API & Database: Postman, REST API Testing, SQL
Technical: Python, Java, SQL, Lua (Basic), GitHub, HTML/CSS Basics
Tools: Jira, Confluence, TestRail, Azure DevOps, Playwright, Selenium, Excel
Languages: English - C1, Polish - B1, Ukrainian - Native