Vasyl Sobol

Senior Software Engineer | 9+ years of experience

I am a motivated software developer with a passion for success, proficient in .NET and C#. I have 9+ years of commercial development experience in IT projects, ranging from small MVPs to large enterprise solutions. My expertise covers the creation of web, desktop, and cloud applications. I am interested in software architecture, algorithms, and concurrency.

My achievements:
- Led the development of an MVP app
- Increased revenue in one of the projects I was involved in by up to 180% after the first release
- Developed applications from rough ideas to successful releases

Main technologies: .NET, C#, ASP.NET MVC, Azure, WPF, SQL Server

Domains: CAD-Industry, EAS (Enterprise Application Software), Petroleum Industry, Gamedev, FinTech, Outsource & Outstaffing

What I expect from company:
- Minimal bureaucracy
- Professional C-Level team with high professional and personal standards
- Ability to speak openly about project problems and have the opportunity to fix them
- Ability to work remotely

How much more you pay for Asian-language prompts: a token cost coefficient for Claude

A few months ago I wrote an article about the higher cost of using non-English languages for prompting. It covered only European languages because of their relative similarity to each other and because I know some of them. But the article caught...
10/31/2026

The bug lived between the threads

A few days ago I recalled a story from the old pre-LLM era of IT. It actually happened only a few years ago, but nowadays it feels like a completely different age. So instead of sharing yet another set of AI thoughts with you, I decided to slow down...
9/30/2026

How much more you pay for non-English prompts: a token cost coefficient for Claude

I have been thinking about optimizing input token costs for a while. One way to spend less is to write prompts in a language that splits into fewer tokens. Intuition says that English should be one of the most efficient languages (because it...
8/31/2026

My achievements

This section highlights my key career achievements

Revenue up to 180%

Increased revenue in one of the projects I was involved in by up to 180% after the first release

MVP app

Led the development of an MVP app

Get in touch

Let's stay in touch! Feel free to visit my LinkedIn and GitHub, send me an email or reach out right here by providing your name and email.