During my time as a Freelance Programmer where I simultaneously worked with clients and studied at Faculty of Electrical Engineering, I acquired additional sets of skills related to the job. I obtained strong knowledge of object-oriented programming principles and design patterns in C++, as well as libraries and frameworks such as STL and Boost I have more than 5 years of experience optimizing and debugging C++ code for improved performance and proven track record of delivering high-quality, scalable software solutions in C++. I also have experience in developing multithreaded applications using C++ as well as proficiency in writing clean, efficient, and maintainable code. I created algorithms and data structures for optimizing performance in C. and performed code reviews and debugging of C codebase. I additionally utilized C language to integrate hardware components in embedded systems. Regarding the Python programming language, I optimized code performance and efficiency through Python script optimization and debugging and managed databases and implemented data processing tasks using Python scripts. I also provided technical support and troubleshooting for Python applications and systems. I acquired strong understanding of object-oriented programming and design patterns in Java. Generally speaking, I acquired high and enviable proficiency, understanding and utilization of object-oriented programming languages such as: Python, C++, C, C#, Java, JavaScript.