Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a software engineer skilled in .NET and Python, with hands-on experience building full-stack solutions and back-end services. My strengths include C#, Python, C++, SQL, and HTML, and I am comfortable exploring TypeScript, React, C, Assembly, and Golang. I also enjoy applying graphics design principles and machine learning basics to projects, and I value collaboration, clean code, and user-focused interfaces. In my free time I like learning new technologies and sharing knowledge with peers to continuously improve our software quality.…I am a software engineer skilled in .NET and Python, with hands-on experience building full-stack solutions and back-end services. My strengths include C#, Python, C++, SQL, and HTML, and I am comfortable exploring TypeScript, React, C, Assembly, and Golang. I also enjoy applying graphics design principles and machine learning basics to projects, and I value collaboration, clean code, and user-focused interfaces. In my free time I like learning new technologies and sharing knowledge with peers to continuously improve our software quality.

Miroslaw Petelczyc

Full Stack Developer, Web Developer, Front-End Developer, +3





I am a software engineer skilled in .NET and Python, with hands-on experience building full-stack solutions and back-end services. My strengths include C#, Python, C++, SQL, and HTML, and I am comfortable exploring TypeScript, React, C, Assembly, and Golang. I also enjoy applying graphics design principles and machine learning basics to projects, and I value collaboration, clean code, and user-focused interfaces. In my free time I like learning new technologies and sharing knowledge with peers to continuously improve our software quality.…I am a software engineer skilled in .NET and Python, with hands-on experience building full-stack solutions and back-end services. My strengths include C#, Python, C++, SQL, and HTML, and I am comfortable exploring TypeScript, React, C, Assembly, and Golang. I also enjoy applying graphics design principles and machine learning basics to projects, and I value collaboration, clean code, and user-focused interfaces. In my free time I like learning new technologies and sharing knowledge with peers to continuously improve our software quality.

Available to hire

I am a software engineer skilled in .NET and Python, with hands-on experience building full-stack solutions and back-end services. My strengths include C#, Python, C++, SQL, and HTML, and I am comfortable exploring TypeScript, React, C, Assembly, and Golang. I also enjoy applying graphics design principles and machine learning basics to projects, and I value collaboration, clean code, and user-focused interfaces. In my free time I like learning new technologies and sharing knowledge with peers to continuously improve our software quality.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

Polish

Fluent

English

Fluent

Russian

Fluent

Belarusian

Fluent

Work Experience

Fullstack Developer (Intern) at LCK

August 1, 2024 - September 9, 2025

Worked on web solutions using Python, JavaScript, HTML, CSS and SQL. Participated in agile development processes, code review, and feature planning.

Fullstack Developer (Intern) at LCK

August 31, 2024 - October 15, 2025

Worked on web solutions using Python, JavaScript, HTML, CSS and SQL. Participated in agile development processes, code review, and feature planning. Contributed to EduVideo Platform (C#/.NET Core) and a ticketing system project, implementing video upload, quiz management, progress tracking, and a responsive user interface. Collaborated with team members to refine requirements and deploy features.

Fullstack Developer at LCK

June 1, 2024 - August 1, 2024

We have developed a tech support solution that connects directly to the system. This allows us to quickly identify and resolve user problems in real time. Utilized Python, HTML, CSS and JavaScript to build a responsive and user-friendly interface. Implemented backend logic and secure client-server (Werkzeug) communication, ensuring quick problem identification and resolution.