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I am a QA Automation Engineer with 9+ years of experience designing and maintaining test automation frameworks for enterprise web, mobile, and API products across banking, retail, and gaming domains. I specialize in building scalable Selenium WebDriver and RestAssured frameworks in Java with TestNG, integrating with CI/CD pipelines (Jenkins, Azure DevOps), and driving regression coverage for high-traffic platforms. I currently operate as an independent contractor (PFA) in Romania, and I am available for long-term remote engagements.…I am a QA Automation Engineer with 9+ years of experience designing and maintaining test automation frameworks for enterprise web, mobile, and API products across banking, retail, and gaming domains. I specialize in building scalable Selenium WebDriver and RestAssured frameworks in Java with TestNG, integrating with CI/CD pipelines (Jenkins, Azure DevOps), and driving regression coverage for high-traffic platforms. I currently operate as an independent contractor (PFA) in Romania, and I am available for long-term remote engagements.

Cosmin Sebastian Halpern

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

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I am a QA Automation Engineer with 9+ years of experience designing and maintaining test automation frameworks for enterprise web, mobile, and API products across banking, retail, and gaming domains. I specialize in building scalable Selenium WebDriver and RestAssured frameworks in Java with TestNG, integrating with CI/CD pipelines (Jenkins, Azure DevOps), and driving regression coverage for high-traffic platforms. I currently operate as an independent contractor (PFA) in Romania, and I am available for long-term remote engagements.…I am a QA Automation Engineer with 9+ years of experience designing and maintaining test automation frameworks for enterprise web, mobile, and API products across banking, retail, and gaming domains. I specialize in building scalable Selenium WebDriver and RestAssured frameworks in Java with TestNG, integrating with CI/CD pipelines (Jenkins, Azure DevOps), and driving regression coverage for high-traffic platforms. I currently operate as an independent contractor (PFA) in Romania, and I am available for long-term remote engagements.

Available to hire

I am a QA Automation Engineer with 9+ years of experience designing and maintaining test automation frameworks for enterprise web, mobile, and API products across banking, retail, and gaming domains. I specialize in building scalable Selenium WebDriver and RestAssured frameworks in Java with TestNG, integrating with CI/CD pipelines (Jenkins, Azure DevOps), and driving regression coverage for high-traffic platforms.

I currently operate as an independent contractor (PFA) in Romania, and I am available for long-term remote engagements.

Skills

Java

Selenium

SQL

Experience Level

Java

Expert

Selenium

Expert

SQL

Expert

Language

Romanian, Moldavian, Moldovan

Fluent

English

Fluent

Work Experience

QA Automation Engineer (Freelance, PFA) at IDS Consulting

August 1, 2024 - Present

Design and maintain Java/Selenium/TestNG automation frameworks for enterprise web applications, applying Page Object Model and data-driven patterns. Develop API regression suites with RestAssured covering authentication, contract validation, and end-to-end business flows. Collaborate with developers, product owners, and business analysts in agile ceremonies to translate acceptance criteria into automated test coverage. Investigate front-end and back-end defects through automated test failures, log analysis, and reproduction in lower environments.

QA Automation Engineer at METRO.digital

December 1, 2020 - August 1, 2024

Owned the automation framework for the Stock Summary product line — a Java/Selenium/RestAssured suite integrated into Jenkins for nightly regression across web and API layers. Built Locust performance scripts to benchmark v1 vs. v2 of the stock summary API, identifying latency regressions before production rollout. Reduced manual regression effort by automating critical retail-store user journeys, improving release confidence on a platform serving METRO wholesale operations. Mentored team members on TestNG patterns, Git workflows, and code review standards for the QA codebase.

QA Automation Engineer (Contract) at exense GmbH

June 1, 2022 - May 1, 2024

Authored Selenium WebDriver and RestAssured automation in Java for a SaaS testing platform, expanding TestNG coverage across UI and REST API layers. Wrote Cypress and JavaScript-based scripts where appropriate, choosing the right tool per layer of the test pyramid. Managed bug lifecycle in Jira and GitHub, partnering with developers to triage, reproduce, and verify fixes. Maintained Zephyr test plans to keep coverage traceable against requirements.

QA Engineer at OviDrive

March 1, 2022 - September 1, 2022

Automated mobile application flows on iOS and Android using Appium, integrated into the existing Java/TestNG framework. Conducted regression cycles to safeguard core fleet-management features against new releases. Contributed to test plan design and process improvement recommendations across the QA function.

QA Engineer at Tremend Software Consulting

October 1, 2021 - May 1, 2022

Built UI, API, and mobile automation using Selenium WebDriver, RestAssured, Appium, and Postman within Java/TestNG. Integrated automated test runs into Jenkins pipelines for continuous regression on client deliveries. Maintained TestRail/Zephyr suites and Confluence documentation to keep coverage and process knowledge current.

QA Automation Engineer at METRO SYSTEMS Romania

January 1, 2019 - December 1, 2020

Developed Selenium WebDriver and RestAssured automation in Java for METRO retail platforms, expanding regression coverage of order, pricing, and stock workflows. Integrated suites into Jenkins for scheduled nightly runs and pull-request gating. Participated in code reviews and contributed framework improvements (reusable components, reporting, parallel execution).

QA Engineer at Tremend Software Consulting

October 1, 2017 - December 1, 2018

Wrote and maintained Selenium WebDriver tests in Java with Maven for client web applications. Extended mobile coverage with Appium, integrating runs with BrowserStack for cross-device validation. Reported defects in Jira and TestRail, participating in daily client stand-ups.

QA Tester (Functional & Mobile Games) at Ubisoft, Amber, Electronic Arts

June 1, 2015 - October 1, 2017

Performed functional, regression, certification (iOS/Android), and ad-hoc testing across AAA and mobile titles including Star Wars: Battlefront and FIFA 17. Mentored new QA hires at EA and authored scripted test cases in TestRail, Jira, and Confluence.