Open to opportunities

SJ Yoo

@sjyoo

Message

QA Tester focused on automation, API testing, and quality for seamless product performance.

South Korea

Message

What I'm looking for

Remote position only. I want to drive high-quality results through strong QA automation and API testing, contribute to seamless product performance, and continuously enhance testing strategies in a dynamic, innovative team—working on your time zone.

I leverage extensive experience in Web, API, Software, and Mobile App development to deliver high-quality results as a QA Tester. I’m remote-position only, and I can work on your time zone—bringing practical automation and validation to real user flows.

Through self-directed automation projects, I built an end-to-end testing framework using Python and Selenium WebDriver for e-commerce platforms, scripting critical paths like registration, search, and checkout. I also provide freelance QA work (API testing with Postman, SQL, Jira, and Qase) and complement it with security testing experience using tools like Burp Suite, ZAP, and Nmap to help improve overall product reliability.

Experience

Work history, roles, and key accomplishments

QA Automation Project

Self-Directed Practice

Developed an automation framework with Python and Selenium WebDriver to run end-to-end tests for e-commerce workflows. Created data-driven checks validating UI elements, API responses, and database consistency.

Python Selenium Webdriver Playwright End To End Testing UI Testing SQL

Web Penetration Tester

Self Employed

Conducted web penetration testing using common vulnerability assessment and scanning tools. Performed targeted checks using SQL injection and exploitation-focused utilities.

Burp suite OWASP ZAP Nmap Sqlmap Metasploit

Freelance QA Tester

UTest.com

Performed QA testing on assigned projects, focusing on API validation and defect reporting. Used Postman and SQL for testing and worked in Jira/Qase for test management.

API Testing Postman SQL Jira