10/18/2026 updated

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Software QA Engineer, ISTQB Certified

Katowice, Poland
Only remote
Higher education
Katowice, Poland
Only remote
Higher education

Profile attachments

DM issues sample.xlsx
Test_Cases.pdf
SQA.pdf

About me

QA Engineer with experience in testing of web and mobile applications. Skilled in functional, regression, integration, smoke, exploratory, API, and database testing. Experienced with Jira, Postman, SQL, Agile processes, AI-assisted QA workflows. Focused on delivering stable, high-quality software.

IstqbTesting (Software)BugzillaGitHubUsability TestingSelenium Webdriver
Summary:
• Software QA Engineer with experience in web, mobile and desktop applications
• Developed and executed test cases, test plans, and test scripts to ensure comprehensive test coverage
• Participated in Agile development sprints, providing feedback and insights to enhance software quality and performance
• Participated in varieties of projects in E-commerce, Social Networking, Mobile fields
• Performed deep functional, regression, performance, usability testing
• Collaborated closely with software developers, project managers, and stakeholders

Technical skills:
• Frontend: HTML, CSS
• Programming: Python, SQL
• CI/CD: Github, Gitlab, Bitbucket
• Networking: TCP/IP, HTTP/HTTPS, LAN/WAN
• IDE: IntelliJ IDEA, PyCharm, Visual Studio
• Tools: Jira, Confluence, Azure, AWS, Asana, Notion, TestRails, Github, Gitlab, Bitbucket, Bugzilla, Docker, Kafka
• Automation: Selenium WebDriver, Playwright, REST Assured (XML, JSON), Postman, Swagger
• Logging: xCode, Android Studio, ADB, Charles proxy
• Database(PostgreSQL, Athena, Aurora)
• AI tools (Copilot, Claude, Grok)

Experience

Professional experience5 - 10 years
Freelancer since2016

Languages

GermanBasic knowledgeEnglishFluentRussianNative speakerUkrainianNative speaker

Project history

Software Tester

Testlio

Internet & IT

500-1000 team member

Worked as a freelance Software Tester through the Testlio crowdtesting platform, supporting quality assurance activities for web and mobile applications. Participated in multiple testing cycles focused on ensuring application stability, functionality, and a high-quality user experience across different environments and devices.
Key Responsibilities:
  • Performed functional testing to verify application features against business and technical requirements.
  • Executed regression testing to ensure existing functionality remained stable after new releases, updates, and bug fixes.
  • Identified, documented, and reported defects with clear reproduction steps, expected results, actual results, and supporting evidence.
  • Conducted cross-browser and cross-device testing to validate consistent application behavior.
  • Verified resolved defects through retesting and validation activities.
  • Executed test cases and participated in exploratory testing sessions to uncover additional issues.
  • Collaborated with test leads, project managers, and distributed QA teams to improve product quality and release readiness.
  • Assisted in validating user workflows, application performance from an end-user perspective, and overall usability.

Software QA Engineer

UpWork

Internet & IT

>10.000 team member

Provided freelance software testing and quality assurance services to clients through the Upwork platform. Worked on a variety of web and mobile applications, helping businesses identify defects, validate functionality, and improve overall product quality before release.
Key Responsibilities:
  • Conducted manual functional testing of web and mobile applications.
  • Performed regression testing to verify system stability after updates and bug fixes.
  • Executed test cases and exploratory testing to identify functional and usability issues.
  • Reported defects with detailed reproduction steps, screenshots, videos, and supporting documentation.
  • Validated application workflows, business requirements, and user acceptance criteria.
  • Performed cross-browser and cross-device compatibility testing.
  • Collaborated directly with clients, developers, and project stakeholders to clarify requirements and communicate testing results.
  • Verified bug fixes and performed retesting to ensure successful issue resolution.
  • Prepared test reports and provided recommendations for quality improvements.
Achievements:
  • Successfully delivered QA services for multiple client projects across various industries.
  • Helped clients improve software reliability, usability, and release quality through thorough testing activities.
  • Built strong client relationships through clear communication, timely delivery, and high-quality defect reporting.

Software Tester

Fiverr

Internet & IT

500-1000 team member

Software QA Engineer

Trinetix Inc.

Internet & IT

250-500 team member

Key Responsibilities:
  • Performed functional, regression, integration, smoke, and exploratory testing of complex web-based business applications.
  • Validated frontend and backend functionality to ensure product stability, reliability, and compliance with business requirements.
  • Collaborated closely with developers, business analysts, and product owners to clarify requirements, identify risks, and improve test coverage.
  • Designed, maintained, and executed test cases, test scenarios, and test documentation in an Agile/Scrum environment.
  • Identified, documented, tracked, and verified software defects throughout the development lifecycle.
  • Conducted database testing using SQL queries for data validation, troubleshooting, and verification of business logic.
  • Tested RESTful APIs using Postman and browser developer tools to validate data flow, integrations, and system behavior.
  • Participated in release verification, production support, and post-deployment validation activities.
  • Assisted in root cause analysis and defect investigation to support faster issue resolution.
  • Leveraged AI-assisted workflows and Python-based scripting to generate test data, automate repetitive tasks, and optimize QA processes.
  • Utilized AI tools to improve test analysis, documentation quality, SQL query preparation, exploratory testing effectiveness, and overall testing efficiency.
Tools & Technologies:
  • Jira
  • SQL
  • Postman
  • Developer Tools
  • Python
  • Git
  • REST APIs
  • Agile / Scrum
  • AI-assisted QA tools

Software QA Engineer

Test Leader LLC

Internet & IT

10-50 team member

As a Software Tester, I was responsible for ensuring the quality and functionality of software products through meticulous testing procedures. I conducted thorough analysis of software systems, designed comprehensive test plans, executed test cases, and reported bugs and discrepancies to the development team for resolution. My role involved collaborating closely with developers and stakeholders to maintain high standards of product excellence and user satisfaction. Through my attention to detail and dedication to quality assurance practices, I contributed to the successful deployment of multiple software releases while adhering to tight deadlines and project requirements.

Software Tester

uTest

Internet & IT

>10.000 team member

Performed freelance software quality assurance and testing projects through the uTest crowdtesting platform for clients across various industries, including web applications, mobile applications, e-commerce platforms, and enterprise systems.
Key Responsibilities:
  • Executed manual functional, regression, usability, and exploratory testing.
  • Identified, documented, and reported software defects with detailed reproduction steps, logs, screenshots, and videos.
  • Verified bug fixes and performed retesting to ensure issue resolution.
  • Tested web and mobile applications across multiple devices, operating systems, and browsers.
  • Participated in test cycles, test case execution, and ad-hoc exploratory testing activities.
  • Collaborated with project managers, test leads, and global testing teams to improve product quality.
  • Conducted localization, user experience, and compatibility testing.
  • Validated application functionality against business and technical requirements.
  • Maintained high-quality defect reports and provided actionable feedback to development teams.
Tools & Technologies:
  • Jira
  • TestRail
  • Browser DevTools
  • Android & iOS devices
  • Chrome, Firefox, Edge, Safari
  • Bug reporting and test management platforms
Achievements:
  • Consistently delivered accurate and reproducible defect reports.
  • Contributed to improving software stability, usability, and user experience for multiple client projects.
  • Worked in international distributed testing teams under strict deadlines and quality standards.

Software Tester

TestIO

Internet & IT

500-1000 team member

Beta Tester

Betafamily

Internet & IT

500-1000 team member

Software Tester

Digivante(BugFinders)

Internet & IT

500-1000 team member

Certificates

HIPAA

HIPAATraining

2026

ISTQB

isqi

2020

Portfolio

Contact form

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