There are many ways you can contribute to open-source projects as a Quality Assurance Engineer. Some suggestions include:
Participating in bug triage: Many open-source projects have a process for triaging and identifying bugs in the software. You can help by reproducing and reporting bugs, or by verifying that fixes have been properly implemented.
Writing or improving documentation: Open source projects often rely on community contributions to improve documentation and help guides. You can help by writing or improving documentation for a project you use and know well.
Implementing new features or improvements: If you have ideas for new features or improvements to an open-source project, consider implementing them and submitting a pull request.
Reviewing pull requests: Many open-source projects have a review process for changes submitted by contributors. You can help by reviewing pull requests and providing feedback on the changes.
Testing pre-release versions: Many open-source projects have pre-release versions that need testing before they can be released to the general public. You can help by testing pre-release versions and reporting any issues you encounter.
To find open-source projects to contribute to, you can try searching for projects on GitHub or other online repositories. You can also try joining online communities or forums for open-source projects in your area of interest to find out about opportunities to contribute.