D
djordje_pejcic's photo
Đorđe Pejčić
From Serbia 07:26 AM (GMT+02:00)
$16/hr

Active over a week ago


Member since May 2026

Share this profile:

QA engineer

Quality Assurance Engineer
Available for hire
Years of experience
4+ years
Experience level
Mid-level
Available for
Full-time
Download Resume / CV

For the past four years at Better Collective, I have been responsible for ensuring product quality across high-traffic web applications and ad-serving services. I have solid experience building and maintaining automated test suites mostly using JavaScript and WebdriverIO, less Cypress and Playwright. In my daily work, I regularly collaborate with developers, Product owners and Project managers in an Agile environment to define acceptance criteria, track bugs via Jira. For writing documentation I used Qase and I am most comfortable using Gherkin as a writing style. I am also comfortable performing API testing using Postman and Swagger. I actively use tools like Google Gemini and Copilot to speed up writing test cases and documentation and also for exploratory testing.

Employment History

QA engineer at Better Collective 2022 - 2026
-Conducted both manual and automated testing to ensure high product quality and reliability -Designed, developed, refactored, and maintained automated test suites for web applications, mainly using JS and WDIO, Cypress and Playwright -Created and maintained comprehensive test documentation using QASE -Collaborated closely with Product Owners to define and refine acceptance criteria -Actively participated in Agile/Scrum ceremonies (daily stand-ups, sprint planning, retrospectives) Worked alongside developers to identify, investigate, and resolve defects -Using JIRA as a tool for feature development and bug tracing Ensured consistency and usability across the product through thorough validation and exploratory testing Performed API testing and validation using Swagger and Postman -Contributed to projects focused on machine learning–driven widget development, -Worked on advertising campaign-related platforms, ensuring accurate tracking, functionality, and performance -Supported multiple parallel projects within the Betting Media business unit, focusing on high-traffic and performance-sensitive platforms -Using Google Gemini, Copilot with Playwright’s MCP server to generate test cases based on user experience -Using AI tools for automating manual QA day-to-day work, such as writing test documentation, test cases, bug reports -Creating automated tests using an agentic coding approach -Mentored a trainee QA engineer over a 3-month period, successfully supporting their onboarding into project teams -Led mentorship for a group of 4 participants in a QA Academy program, providing guidance on testing practices, tools, and real- world workflows

Education

Manual/automation testing at IT bootcamp, Serbia 2021 - 2022
Master of arts in Tourismology at Faculty of Science and Mathematics, University of Nis, Serbia 2016 - 2020