Serhii Afanasiev ensures that software works as intended and better than expected. With solid experience in testing web applications, he specializes in functional, exploratory, and usability testing that keeps digital products stable and intuitive. His work spans the entire QA cycle: from analyzing requirements and writing test plans to running automation tools and tracking results in real time. Serhii combines technical rigor with a practical mindset, focusing on how each fix or improvement impacts the end user. Colleagues value his consistency, structured approach, and deep understanding of how QA drives software development forward.