Bünyamin Özen
@bnyaminzen
I’m a Senior QA Automation Engineer specializing in Java-based API and UI testing, building frameworks, and accelerating CI/CD quality.
What I'm looking for
I’m a QA Automation Engineer with more than 6 years of experience in both Manual and Automation Testing of web-based applications across Fleet Management, Cloud Storage, and Fintech domains. I focus on strong SDLC/STLC practices, clear test strategy, and turning quality into a measurable, repeatable system.
In my roles at Weavr.io, I designed and maintained a robust E2E automation framework for complex embedded finance APIs using Java, REST Assured, and Maven. I also spearheaded AI-driven testing—integrating AI-powered validation and LLM-as-a-Judge models—to improve test reporting and automated error analysis.
I build automation frameworks from scratch using Cucumber (BDD) and TestNG data-driven approaches, including POM and Singleton patterns. For API testing, I work with Oracle/MySQL, write SQL queries for back-end validation, and validate data through POJO classes and Hamcrest matchers with serialization/deserialization, supported by Swagger documentation.
I thrive in Agile/Scrum teams and have owned CI/CD gatekeeping by integrating automated test suites into pipelines for stable deployments. I’m known as a collaborative, self-motivated team player, and I actively mentor others with QA best practices, documentation standards, and automation logic.
Experience
Work history, roles, and key accomplishments
Senior QA Automation Engineer
Weavr.io
Aug 2025 - Present (10 months)
Designed and maintained an end-to-end automation framework for embedded finance APIs using Java, REST Assured, and Maven. Integrated AI-powered validation (LLM-as-a-Judge) to improve reporting and error analysis, and mapped over 1,000 tests to Jira IDs to reduce regression cycle time.
QA Automation Engineer
Weavr.io
Jul 2022 - Aug 2025 (3 years 1 month)
Created test plans and automation scripts for core banking-as-a-service features, focusing on API security and data integrity. Automated legacy manual testing workflows, reducing manual effort by 40%, and performed deep-dive API testing for financial transaction flows and third-party integrations.
QA Automation Engineer
JunieHelioteca
Dec 2020 - Jul 2022 (1 year 7 months)
Executed manual and automation testing based on user stories and acceptance criteria, including implementing a Cucumber BDD UI automation framework with Selenium WebDriver, JUnit, and Maven. Built data-driven tests, generated HTML/JSON reports, and ran smoke/regression suites via Jenkins with report email delivery.
QA Automation Engineer
Intabella
Jan 2020 - Dec 2020 (11 months)
Performed manual and automation testing based on user stories and acceptance criteria, including building a data-driven UI framework with Java, Selenium WebDriver, TestNG, and Maven. Tested APIs via CRUD operations in Postman/REST Assured, used JDBC/SQL for database testing, and generated Extent-Reports with screenshots for Jenkins-run smoke/regression suites.
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Bünyamin hasn't added their education
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