Sergei Parfenov

For the past ten years, I’ve been designing and developing software systems. I work on architecture, backend engineering and the integration of machine learning models. I take solutions from early prototypes through launch and ongoing operation in production.

Portrait of Sergei Parfenov

I’ve worked at Yandex, TripleTen and Nebius. I built AI tools for search, knowledge assessment and tutoring. Education became a major part of my engineering work along the way.

I hold a bachelor’s degree in Computer Information Systems from Saint Petersburg State University of Finance and Economics. In 2024, I studied deep learning for computer vision through Stanford University’s CS231n course. I’m still learning through my own experiments, which I write about on the blog.

I’m currently CTO at Aliwio, where I build software for veterinary clinics, and a technical consultant at Symptomato.

Experience & working together

On the blog

I share experiments, technical deep dives and what I learn building AI systems. Nearly 10k subscribers follow my writing.