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I am a QA Engineer with ISTQB certifications and a strong foundation in web test automation. I have hands-on experience building test frameworks, driving regression coverage, and validating complex systems across UI, API, and backend layers. In cross-functional teams, I collaborate with developers, product owners, and global QA teams to improve quality and delivery speed. I also enjoy exploring frontend development and business analysis paths to better align testing with product goals.…I am a QA Engineer with ISTQB certifications and a strong foundation in web test automation. I have hands-on experience building test frameworks, driving regression coverage, and validating complex systems across UI, API, and backend layers. In cross-functional teams, I collaborate with developers, product owners, and global QA teams to improve quality and delivery speed. I also enjoy exploring frontend development and business analysis paths to better align testing with product goals.

Marcell Weller

QA Engineer, Web Developer, Front-End Developer, +2

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I am a QA Engineer with ISTQB certifications and a strong foundation in web test automation. I have hands-on experience building test frameworks, driving regression coverage, and validating complex systems across UI, API, and backend layers. In cross-functional teams, I collaborate with developers, product owners, and global QA teams to improve quality and delivery speed. I also enjoy exploring frontend development and business analysis paths to better align testing with product goals.…I am a QA Engineer with ISTQB certifications and a strong foundation in web test automation. I have hands-on experience building test frameworks, driving regression coverage, and validating complex systems across UI, API, and backend layers. In cross-functional teams, I collaborate with developers, product owners, and global QA teams to improve quality and delivery speed. I also enjoy exploring frontend development and business analysis paths to better align testing with product goals.

Available to hire

I am a QA Engineer with ISTQB certifications and a strong foundation in web test automation. I have hands-on experience building test frameworks, driving regression coverage, and validating complex systems across UI, API, and backend layers.

In cross-functional teams, I collaborate with developers, product owners, and global QA teams to improve quality and delivery speed. I also enjoy exploring frontend development and business analysis paths to better align testing with product goals.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Hungarian

Fluent

English

Fluent

German

Beginner

Work Experience

Quality Assurance Engineer at Sonrisa Ltd

August 1, 2020 - October 21, 2025

Took part in testing and validating mobile workflows for glucose tracking, medication reminders, and user data visualization. Performed manual and regression testing on mobile and web platforms. Implemented SCRUM/Agile practices to improve delivery speed and quality. Created and maintained detailed test cases and project documentation, and handled client communication and issue resolution. Tested systems using VirtualBox environments and contributed to an AI initiative by understanding and training baseline models.

Quality Assurance Engineer at Blue Guava Technology

April 1, 2021 - October 21, 2025

Executed analytical and edge-case testing using data validation approaches and validated HBO Max across Roku, iOS, Android, Firestick, and other platforms. Verified complex user flows and ensured consistent behavior across devices. Standardized bug reporting and improved ticket quality in Jira. Collaborated with developers to reproduce and resolve cross-platform issues efficiently.

Test Engineer at Liferay Hungary

June 1, 2023 - October 21, 2025

Created and automated new test cases using the Java-based POSHI framework. Ensured stability and regression coverage for enterprise portal features. Integrated third-party apps in the automation environment (e.g., Keycloak). Applied SACRED model for structured test coverage and performed root cause analysis on recurring test failures. Maintained and backported automated validation tests for older and upgraded versions.

Quality Assurance Engineer at Speech Processing Solutions

November 1, 2025 - October 21, 2025

Designed new scenarios, increased coverage, and performed smoke testing on cross-platform application. Built and maintained test strategies, suites, and documentation from scratch in a small, agile team. Acted as sole QA for extended periods, independently managing complex releases. Collaborated with developers, product owners, and global QA teams to ensure consistent quality. Contributed to planning and refinement sessions, improving clarity in story tickets. Extended UI automation coverage using Accelq and collaborated with backend developers to validate API response integrity. Currently exploring API automation and service-level testing.