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Nagy Kristóf

@nagykristf

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QA Engineer at WhaleCloud and 4DSoft, testing CRM/BSS platforms and validating backend data with API testing and SQL.

Hungary

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At WhaleCloud, I created and executed manual tests for CRM/BSS platforms used in live production environments. I tested features and fixes through functional, regression, exploratory, and usability testing, and worked with developers to report and verify defects.

At 4DSoft, I tested software functionality against requirements, maintained test scenarios and cases, and used SQL to validate data integrity. I also supported L2–L3 production issues at WhaleCloud and contributed to automation projects using Java, JUnit, and Selenium.

Experience

Work history, roles, and key accomplishments

Manual Software Tester

4DSoft

Aug 2026 - Oct 2026 (2 months)

Performed manual testing of software functionality against requirements, wrote and maintained test scenarios and test cases, executed tests, documented results, and reported defects. Validated data integrity using SQL queries and supported defect verification and regression testing.

Manual Testing Test Case Design Test Scenario Design SQL Defect Reporting Regression Testing

QA Engineer / Technical Support (L2–L3)

WhaleCloud

Oct 2021 - Jul 2026 (4 years 9 months)

Created and executed manual test cases for large-scale CRM/BSS platforms, tested new features through functional, regression, exploratory, and usability testing, and collaborated with developers to report and verify defects using Jira. Validated backend data through API testing and SQL queries, participated in UAT and release-readiness checks, and supported L2–L3 production issues.

Manual Testing Functional Testing Regression Testing Exploratory testing Usability Testing API Testing SQL Jira UAT Defect Reporting

Education

Degrees, certifications, and relevant coursework

Codecool

Automated Software Testing Certificate, Software Testing

Completed an Automated Software Testing Certificate, covering Java, Python, Selenium, SQL, and CI/CD pipelines, with hands-on automation framework development.