Stefan Aleksic
Senior Quality Assurance Automation Engineer
Serbia
Summary
🤩
Rockstar🎓
Top SchoolStefan Aleksic is a Senior Quality Assurance Automation Engineer with over 12 years in software testing and 8+ years specifically focused on automation and performance testing using tools like Playwright, Selenium, Cypress, Postman, and JMeter. He builds scalable, maintainable test frameworks and partners closely with cross-functional teams to improve release quality and speed. Stefan contributes to front-end open-source work—helping enhance the popular Plasmo browser extension framework with testing, auto-reload, and i18n—bringing practical UI and tooling experience to QA challenges. Currently based in Serbia, he’s exploring AI-driven testing to accelerate defect detection and extract deeper product insights, blending hands-on engineering with a curiosity for product-level observability.
12 years of coding experience
9 years of employment as a software developer
Information Technology, Information Technology at University of Belgrade - Faculty of Organizational ScienceEkonomska Skola "Nada Dimic"
Github Skills (27)
javascript10
browser-extension10
typescript10
typescript-types10
typescripts10
react10
redux9
jestjs9
react-query9
firebase8
uid8
front-end-development8
ui-design8
parcel8
translation7
Programming languages (17)
Github contributions (5)
PlasmoHQ/examples
May 2022 - Jan 2023
🔰 Example projects that demonstrate how to use the Plasmo Framework and integrate with popular tools
Role in this project:
Front-end Developer
Front-end DeveloperContributions:6 reviews, 28 commits, 4 PRs in 8 months
Contributions summary:Stefan primarily contributed to the development of example projects showcasing the Plasmo Framework for browser extensions. Their work included implementing UI components, managing state with useStorage, and integrating with external services like Firebase for authentication. The user demonstrated proficiency in React, TypeScript, and utilizing tools like Prettier for code formatting. They also integrated Redux and React Query, demonstrating knowledge of state management and data fetching within a browser extension context.
javascriptplasmoexample-projectsbrowser-extensionintegrate
PlasmoHQ/plasmo
May 2022 - Jan 2023
🧩 The Browser Extension Framework
Role in this project:Front-end Developer
Front-end DeveloperContributions:105 reviews, 66 commits, 23 PRs in 8 months
Contributions summary:Stefan primarily contributed to the development of a browser extension framework. Their work included adding Jest for testing, incorporating auto-reloading functionality using WebSockets, and integrating internationalization (i18n) support. They also focused on updating the UI and enhancing the development experience, including updating links to documentation.
firefoxbundlerbrowserjavascriptsdk
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