Sergio Tereshchenko
macOS specialist with a background in technical support and quality assurance.
Author Bio
Specialty

Sergio is a macOS expert at Nektony with an extensive background in technical support and QA.

With a background in technical support, quality assurance, and translation, he creates clear, actionable content on tech, digital tools, and user experience, making technical content accessible to everyone. Since transitioning into content marketing, Sergio has written a wide range of materials, from guides to case studies.

Education

Sergio has got two Master’s degrees in Law and Translation. He continuously sharpens his skills through professional development, including certifications in content marketing, software testing, etc.

Field

Sergio’s hands-on experience with testing software and assisting users with technical issues has given him a strong understanding of how products and tech work, how users interact with them, and what kind of guidance they need to solve problems quickly and effectively.

At Nektony, he creates user-focused content such as how-to guides, app overviews, and troubleshooting articles that simplify macOS tools and utilities. His mission is to turn technical processes into clear, actionable steps that empower users to make the most of their devices.

Certificates
Certificate awarded to Sergio Tereshchenko for completing the course 'The Fundamentals of Software Testing'

The Fundamentals of Software Testing

Articles
Mole keeps coming up in Reddit threads and best Mac cleaner lists, and sounds too good: a free, open-source tool that clears caches, uninstalls apps with their leftovers, and analyzes...
[list_title margin="subtitle-pointList-bottom" class=""]Little Snitch is the benchmark for per-app outbound firewall control on Mac. It's also €59. If that's the number that sent you here, there are six replacement tools...
If you are new to Mac, the transition has a learning curve that nobody warns you about. Different shortcuts, different app logic, different everything. The laptop is ready to go...
The built-in macOS firewall blocks inbound traffic, but it says nothing about what's going out. Once an app is installed on your Mac, it can quietly send data to any...
Dragging Claude.app to Trash skips the most disk-heavy part of the cleanup: its folders remain invisible in the Library and can reach close to 10GB. Claude Code also leaves a...
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