Available to hire
Hi there! I’m Deniz KARAOĞLU, a Senior Quality Assurance Engineer with a proven track record leading QA and delivery for 10+ client projects across web and mobile platforms. I design robust QA processes, develop automated tests with Playwright and TypeScript, and collaborate closely with designers, developers, and clients to ensure high-quality releases.
I enjoy turning complex requirements into reliable test strategies, improving delivery efficiency, and contributing to UX and product decisions to maintain design integrity and usability.
Skills
Experience Level
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
Polish
Advanced
English
Fluent
Work Experience
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, cutting post-release defects by 60%. Expanded test coverage by 30% and reported 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories, aligning design and requirements to speed delivery by 20%. Streamlined regression testing processes, reducing execution time by 30%. Performed third-party application audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tek Group Solutions LTD. (t/a Husssl)
May 1, 2024 - PresentLead QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Perform comprehensive manual testing in rapid delivery cycles, maintaining high release quality under tight timelines. Developed initial automated API and regression tests using Playwright (TypeScript) to enhance coverage and reduce repetitive manual checks in long-term, iterative projects. Designed and implemented a Jira-based tracking system, removing communication bottlenecks and improving delivery efficiency by 30%+. Coordinate daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contribute to UX and product logic decisions, defining interface behavior and microcopy for usability and design integrity. Support distributed teams through clear QA processes, documentation, and consistent quality standards.
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, cutting post-release defects by 60%. Expanded test coverage by 30% and reported 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories, aligning design and requirements to speed delivery by 20%. Streamlined regression testing processes, reducing execution time by 30%. Performed third-party application audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tek Group Solutions LTD. (t/a Husssl)
May 1, 2024 - PresentLead QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Conducted comprehensive manual testing in rapid delivery cycles to maintain high release quality under tight timelines. Developed initial automated API and regression tests using Playwright (TypeScript) to enhance coverage and reduce repetitive manual checks in long-term, iterative projects. Designed and implemented a Jira-based tracking system, removing communication bottlenecks and improving delivery efficiency by 30%+. Coordinated daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contributed to UX and product logic decisions, defining interface behavior and microcopy for usability and design integrity. Supported distributed teams through clear QA processes, documentation, and consistent quality standards.
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, cutting post-release defects by 60%. Expanded test coverage by 30% and reported 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories, aligning design and requirements to speed delivery by 20%. Streamlined regression testing processes, reducing execution time by 30%. Performed third-party app audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tech Group Solutions LTD (t/a Husssl)
May 1, 2024 - PresentLed QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Executed comprehensive manual testing in rapid delivery cycles, maintaining high release quality under tight deadlines. Developed automated API and regression tests using Playwright (TypeScript) to enhance coverage and reduce repetitive manual checks. Designed and implemented a Jira-based tracking system, eliminating communication bottlenecks and boosting delivery efficiency by over 30%. Coordinated daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contributed to UX and product logic decisions, defining interface behavior and microcopy for usability and design integrity. Supported distributed teams with clear QA processes, documentation, and consistent quality standards.
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, reducing post-release defects by 60%. Increased test coverage by 30% and documented 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories to align design and requirements, accelerating delivery by 20%. Streamlined regression testing processes, cutting execution time by 30%. Performed third-party application audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tek Group Solutions LTD (t/a Husssl)
May 1, 2024 - PresentLed QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Performed comprehensive manual testing within rapid delivery cycles to maintain high release quality. Developed automated API and regression tests using Playwright (TypeScript) to increase coverage and reduce manual checks in long-term, iterative projects. Designed and implemented a Jira-based tracking system to remove communication bottlenecks and improve delivery efficiency by 30%. Coordinated daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contributed to UX and product decisions, defining interface behavior and microcopy to support usability and design integrity.
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, cutting post-release defects by 60%. Expanded test coverage by 30% and reported 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories, aligning design and requirements to speed deliver by 20%. Streamlined regression testing processes, reducing execution time by 30%. Performed third-party application audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tek Group Solutions Ltd. (t/a Husssl)
May 1, 2024 - PresentLed QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Performed comprehensive manual testing in rapid delivery cycles to maintain high release quality. Developed initial automated API and regression tests using Playwright (TypeScript) to increase coverage and reduce repetitive manual checks in long-term, iterative projects. Designed and implemented a Jira-based tracking system, removing communication bottlenecks and improving delivery efficiency by 30%+. Coordinated daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contributed to UX and product decisions, defining interface behavior and microcopy for usability and design integrity. Supported distributed teams through clear QA processes, documentation, and consistent quality standards.
Quality Assurance Engineer at Freeport Metrics
May 1, 2024 - October 10, 2025Introduced QA practices to a project with no prior testing, cutting post-release defects by 60%. Expanded test coverage by 30% and reported 100+ security vulnerabilities using OWASP. Reviewed 100+ user stories, aligning design and requirements to speed delivery by 20%. Streamlined regression testing processes, reducing execution time by 30%. Performed third-party application audits to support estimation and defect management.
Senior Quality Assurance Engineer at Tek Group Solutions LTD. (t/a Husssl)
May 1, 2024 - PresentLed QA and delivery for 10+ client projects across web and mobile platforms, ensuring functional accuracy and design consistency. Performed comprehensive manual testing in rapid delivery cycles, maintaining high release quality under tight deadlines. Developed initial automated API and regression tests using Playwright (TypeScript) to enhance coverage and reduce repetitive manual checks in long-term, iterative projects. Designed and implemented a Jira-based tracking system, removing communication bottlenecks and improving delivery efficiency by 30%+. Coordinated daily with designers, developers, and clients to align requirements, manage priorities, and ensure smooth releases. Contributed to UX and product logic decisions, defining interface behavior and micro-copy for usability and design integrity. Supported distributed teams through clear QA processes, documentation, and consistent quality standards.
Quality Assurance Specialist at Playtika Warsaw
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automation workflows. Participated in the full SDLC for a new Best Friends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional agile delivery.
Quality Assurance Specialist at Playtika
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automation workflows. Participated in the full SDLC for a new Best Fiends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional agile delivery.
Quality Assurance Specialist at Playtika
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automation workflows. Participated in the full SDLC for a new Best Friends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional agile delivery.
Quality Assurance Specialist at Playtika
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automated workflows. Participated in the full SDLC for a new Best Friends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional Agile delivery.
Quality Assurance Specialist at Playtika
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automation workflows. Participated in the full SDLC for a new Best Fiends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional agile delivery.
Quality Assurance Specialist at Playtika
March 1, 2023 - October 10, 2025Created and migrated 400+ test cases in TestRail to streamline manual and automation workflows. Participated in the full SDLC for a new Best Friends feature from concept to launch. Authored and maintained 5 wiki pages, reducing invalid bug reports by 20%. Supported QA onboarding and contributed to cross-functional agile delivery.
Quality Assurance Technician at Testronic Warsaw
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Quality Assurance Technician at Testronic
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Quality Assurance Technician at Testronic
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Quality Assurance Technician at Testronic
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Quality Assurance Technician at Testronic
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Quality Assurance Technician at Testronic
July 1, 2022 - October 10, 2025Reported 350+ defects and tested 200+ API endpoints using Postman, resolving 100+ early-stage issues. Conducted functional testing for titles by Rovio, Supercell, and Seriously. Executed performance testing with JMeter and provided QA risk insights to developers.
Education
Bachelor of Arts in Psychology at SWPS University of Social Sciences and Humanities
January 11, 2030 - June 1, 2024Bachelor of Arts in Psychology at Warsaw University of Social Sciences and Humanities
January 11, 2030 - June 1, 2024Bachelor of Arts in Psychology at WSPS University of Social Sciences and Humanities
January 11, 2030 - June 1, 2024Bachelor of Arts in Psychology at WPS University of Social Sciences and Humanities, Warsaw, Poland
January 11, 2030 - June 1, 2024Bachelor of Arts at SWPS University of Social Sciences and Humanities
January 11, 2030 - June 1, 2024Bachelor of Arts in Psychology at SWPS University of Social Sciences and Humanities, Warsaw, Poland
January 11, 2030 - June 1, 2024Qualifications
Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Other, Gaming
Skills
Experience Level
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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